BoardQBank • NPLEX Part II Core Clinical Science Preparation
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Expanded orthopedic test bank: Cases 51-91 add 41 source cases and 246 questions from the supplied Orthopedics Test-Case PDF. The source does not contain Cases 2-10, so no unsupported questions were invented.
1

Rotator-Cuff Tendinopathy

4 questions · Physical Medicine

Clinical Case
A 47-year-old right-handed painter presents with three months of progressive right shoulder pain. The pain is worse while painting overhead and when lying on the affected side. There was no major trauma. Examination reveals: • Painful active shoulder abduction between 70° and 120° • Nearly full passive range of motion • Pain with resisted abduction and external rotation • Positive Hawkins-Kennedy and Neer tests • No cervical radicular symptoms • No obvious muscle atrophy
Question 1 of 4NPLEX-PM-001

What is the most likely diagnosis?

Answer and Clinical Rationale

Correct answer: B. Rotator-cuff tendinopathy
Explanation Pain with overhead activity, a painful arc, pain during resisted rotator-cuff testing, positive subacromial provocation tests, and relatively preserved passive movement support rotator-cuff tendinopathy. • A: Adhesive capsulitis restricts both active and passive motion. • C: Cervical radiculopathy usually produces radiating pain, sensory changes, weakness, or reflex abnormalities. • D: Glenohumeral osteoarthritis usually causes loss of active and passive movement with crepitus. • E: Posterior dislocation usually follows trauma, seizure, or electrocution and causes marked motion restriction. Current rotator-cuff guidance emphasizes clinical assessment and individualized active rehabilitation; routine early advanced imaging is usually unnecessary in an uncomplicated presentation.
Question 2 of 4NPLEX-PM-002

Which test most directly reproduces subacromial shoulder pain in this patient?

Answer and Clinical Rationale

Correct answer: B. Neer test
Explanation The Neer test provokes symptoms by elevating the internally rotated arm, narrowing the subacromial space and stressing sensitive rotator-cuff and bursal structures. • A: Assesses median-nerve symptoms associated with carpal tunnel syndrome. • C: Assesses possible meniscal pathology. • D: Assesses de Quervain tenosynovitis. • E: Assesses Achilles-tendon integrity. Exam point: A single shoulder test does not establish the diagnosis. Interpret test findings within the complete history and examination.
Question 3 of 4NPLEX-PM-003

What is the most appropriate initial rehabilitation plan?

Answer and Clinical Rationale

Correct answer: C. Activity modification with progressive rotator-cuff and scapular strengthening
Explanation The patient should temporarily reduce aggravating overhead load while beginning graded shoulder and scapular exercise. Rehabilitation may include: • Pain-limited range-of-motion exercise • Scapular control • Isometric rotator-cuff activation • Progressive resisted external rotation and abduction • Gradual work-specific loading • A: Prolonged immobilization may increase stiffness and deconditioning. • B: Maximal loading is inappropriate during an irritable phase. • D: Manipulation under anesthesia is not first-line therapy for tendinopathy. • E: There is no evidence of a cervical cause. Exercise-based rehabilitation is a central component of nonsurgical rotator-cuff management.
Question 4 of 4NPLEX-PM-004

Which new finding would most strongly indicate imaging and referral rather than continued conservative treatment?

Answer and Clinical Rationale

Correct answer: C. Sudden inability to actively raise the arm after a traumatic fall
Explanation Acute traumatic weakness or inability to elevate the arm raises concern for a significant full-thickness rotator-cuff tear, fracture, dislocation, or neurologic injury.
Diagnosis: Rotator-cuff tendinopathy/subacromial shoulder pain Differential diagnosis: Full-thickness tear, adhesive capsulitis, cervical radiculopathy, glenohumeral arthritis, AC-joint disease Key investigations: Usually clinical initially; radiography, ultrasound, or MRI when trauma, severe weakness, suspected tear, or failure to improve changes management Treatment: Activity modification, graded exercise, ergonomic correction, symptom control Manual therapy: May be used as an adjunct, not as a replacement for active rehabilitation NPLEX trap: Preserved passive motion argues against adhesive capsulitis.
2

Adhesive Capsulitis

4 questions · Physical Medicine

Clinical Case
A 58-year-old woman with type 2 diabetes reports six months of gradually progressive left shoulder pain and stiffness. She has difficulty fastening her bra and reaching overhead. There was no trauma. Examination reveals: • Restricted active and passive shoulder movement • External rotation is most restricted • No focal neurologic deficit • Normal elbow and wrist examination • Mild pain at the end of the available range
Question 1 of 4NPLEX-PM-005

What is the most likely diagnosis?

Answer and Clinical Rationale

Correct answer: A. Adhesive capsulitis
Explanation Adhesive capsulitis causes progressive shoulder pain and global restriction of active and passive glenohumeral motion. External rotation is commonly the most affected movement. • B: A cuff tear usually limits active movement more than passive movement. • C: Carpal tunnel syndrome causes median-nerve hand symptoms. • D: Cervical myelopathy causes upper motor-neuron findings and gait or hand dysfunction. • E: Bicipital rupture may produce bruising, weakness, and a “Popeye” deformity. The typical clinical pattern includes gradual onset in middle age with significant mobility loss.
Question 2 of 4NPLEX-PM-006

Which test best documents functional shoulder mobility?

Answer and Clinical Rationale

Correct answer: A. Apley scratch test
Explanation The Apley scratch test evaluates functional combinations of shoulder abduction, adduction, internal rotation, and external rotation. • B: ACL integrity • C: Ankle ligament stability • D: Lateral elbow pain • E: Lumbosacral nerve-root irritation
Question 3 of 4NPLEX-PM-007

What is the most appropriate initial physical medicine prescription?

Answer and Clinical Rationale

Correct answer: B. Gentle mobility exercise matched to symptom irritability
Explanation Exercise intensity should be matched to the condition’s irritability. Appropriate options include: • Pendulum exercise • Assisted flexion • Gentle external-rotation stretching • Cross-body mobility • Gradual functional reaching More aggressive mobilization may be considered later as pain decreases and stiffness becomes the primary limitation. • A: Excessive loading can aggravate the painful stage. • C: Prolonged immobilization worsens stiffness. • D: Heavy loading is premature. • E: Functional activity must be progressed gradually. Joint mobilization and stretching can support pain reduction and mobility improvement when tailored to the patient’s stage.
Question 4 of 4NPLEX-PM-008

Which hydrotherapy application may be used immediately before gentle stretching when sensation and circulation are normal?

Answer and Clinical Rationale

Correct answer: A. Comfortable superficial heat
Explanation Comfortable heat may temporarily reduce guarding and improve tolerance of gentle mobility work in a chronically stiff shoulder. The practitioner must first confirm: • Intact skin sensation • Adequate circulation • Ability to report excessive heat • Absence of acute infection or bleeding • Appropriate exposure time and temperature
Diagnosis: Adhesive capsulitis Risk association: Diabetes and thyroid disease may be associated Key examination: Active and passive restriction, especially external rotation Treatment: Education, pain control, stage-appropriate mobility, later strengthening Imaging: Consider when the clinical pattern is atypical or another disorder is suspected NPLEX trap: Rotator-cuff tears usually do not produce the same global passive restriction.
3

Cervical Radiculopathy

4 questions · Physical Medicine

Clinical Case
A 45-year-old office worker reports neck pain radiating into the right lateral forearm and thumb. Examination reveals: • Reduced sensation over the thumb • Weak wrist extension • Reduced right biceps reflex • Symptoms increase with cervical compression • Symptoms improve with cervical distraction • No gait abnormality or bowel or bladder symptoms
Question 1 of 4NPLEX-PM-009

Which cervical nerve root is most likely affected?

Answer and Clinical Rationale

Correct answer: C. C6
Explanation A C6 pattern may include: • Pain or sensory change extending toward the thumb • Weakness of wrist extension and sometimes elbow flexion • Reduced biceps or brachioradialis reflex • C5: More strongly associated with shoulder abduction and lateral upper-arm sensation. • C7: Middle finger symptoms, triceps weakness, and reduced triceps reflex. • C8: Medial forearm and small-finger symptoms with finger-flexion weakness.
Question 2 of 4NPLEX-PM-010

Which finding supports cervical nerve-root compression?

Answer and Clinical Rationale

Correct answer: B. Symptoms reproduced by cervical compression and relieved by distraction
Explanation Cervical compression may reproduce radicular symptoms by reducing foraminal space. Distraction may reduce symptoms by decreasing mechanical compression. The NPLEX Physical Medicine blueprint includes cervical compression and distraction testing.
Question 3 of 4NPLEX-PM-011

What is the most appropriate initial management when no serious neurologic deficit is present?

Answer and Clinical Rationale

Correct answer: B. Education, activity modification, therapeutic exercise, and monitored conservative care
Explanation Conservative care may include: • Postural and workplace modification • Pain-limited cervical mobility • Scapular and deep-neck-flexor exercise • Neural mobility when appropriate • Carefully selected manual therapy • Monitoring of strength, sensation, and reflexes Any worsening motor deficit requires reassessment and possible imaging or referral.
Question 4 of 4NPLEX-PM-012

Which new finding is most concerning for cervical myelopathy?

Answer and Clinical Rationale

Correct answer: C. Hyperreflexia, hand clumsiness, and an unsteady gait
Explanation Upper motor-neuron signs, loss of hand dexterity, gait dysfunction, pathologic reflexes, or bowel or bladder disturbance raise concern for spinal-cord involvement. MRI of the relevant spinal region is generally the preferred initial imaging modality for suspected myelopathy.
Diagnosis: C6 cervical radiculopathy Differential diagnosis: Carpal tunnel syndrome, radial neuropathy, rotator-cuff disease, cervical myelopathy Key investigations: Neurologic examination; MRI when progressive deficit, myelopathy, trauma, infection, malignancy, or persistent severe symptoms are present Treatment: Exercise, posture, graded activity, selected manual therapy Contraindication: Do not perform forceful cervical treatment when instability, fracture, myelopathy, vascular pathology, or progressive neurologic loss is suspected NPLEX trap: Radiculopathy is a nerve-root disorder; myelopathy involves the spinal cord.
4

Cauda Equina Syndrome

4 questions · Physical Medicine

Clinical Case
A 61-year-old patient presents with severe low-back pain after several weeks of increasing sciatica. During the previous 12 hours, the patient developed: • Bilateral leg weakness • Saddle anesthesia • Urinary retention • Reduced anal tone • Difficulty walking
Question 1 of 4NPLEX-PM-013

What is the most likely diagnosis?

Answer and Clinical Rationale

Correct answer: B. Cauda equina syndrome
Explanation The combination of urinary retention, saddle anesthesia, bilateral neurologic dysfunction, and reduced anal tone is highly concerning for cauda equina compression.
Question 2 of 4NPLEX-PM-014

What is the most appropriate next action?

Answer and Clinical Rationale

Correct answer: C. Arrange immediate emergency assessment
Explanation Suspected cauda equina syndrome is a time-sensitive emergency. Physical treatment must not delay definitive evaluation.
Question 3 of 4NPLEX-PM-015

Which investigation is most appropriate?

Answer and Clinical Rationale

Correct answer: B. Urgent lumbar MRI
Explanation The American College of Radiology identifies lumbar MRI as an appropriate initial imaging examination for suspected cauda equina syndrome.
Question 4 of 4NPLEX-PM-016

Which physical medicine treatment is contraindicated at this visit?

Answer and Clinical Rationale

Correct answer: A. Immediate lumbar manipulation
Explanation Manipulation could delay emergency imaging and specialist management. The priority is urgent assessment for decompression and treatment of the cause.
Diagnosis: Cauda equina syndrome Possible causes: Large disc herniation, tumor, epidural abscess, hematoma, severe stenosis, trauma Red flags: Urinary retention, saddle anesthesia, bilateral deficits, reduced anal tone Gold-standard investigation: Urgent MRI Treatment: Emergency surgical or specialist management based on the cause NPLEX trap: Severe pain alone does not establish cauda equina syndrome; the neurologic and bladder findings are decisive.
5

Carpal Tunnel Syndrome

4 questions · Physical Medicine

Clinical Case
A 51-year-old bookkeeper reports nocturnal numbness and tingling in the right thumb, index finger, middle finger, and radial half of the ring finger. Shaking the hand temporarily reduces the symptoms. Examination shows: • Positive Phalen test • Positive Tinel sign at the carpal tunnel • Mild thenar weakness • No neck pain • Normal ulnar distribution sensation
Question 1 of 4NPLEX-PM-017

What is the most likely diagnosis?

Answer and Clinical Rationale

Correct answer: C. Carpal tunnel syndrome
Explanation Carpal tunnel syndrome results from median-nerve compression at the wrist. Typical symptoms include nocturnal paresthesia affecting the thumb, index, middle, and radial ring fingers. • A: C8 radiculopathy more often affects the medial hand and may include neck symptoms. • B: Ulnar neuropathy affects the small finger and ulnar half of the ring finger. • D: De Quervain tenosynovitis causes radial wrist pain rather than median sensory symptoms. • E: Lateral epicondylalgia causes lateral elbow pain.
Question 2 of 4NPLEX-PM-018

Which nerve is compressed?

Answer and Clinical Rationale

Correct answer: C. Median nerve
Explanation The median nerve passes through the carpal tunnel with the finger-flexor tendons.
Question 3 of 4NPLEX-PM-019

Which initial physical intervention is most appropriate for mild nocturnal symptoms?

Answer and Clinical Rationale

Correct answer: A. Neutral-position wrist splint at night
Explanation A neutral-position nocturnal wrist orthosis reduces prolonged wrist flexion or extension, which can increase pressure within the carpal tunnel. Other management considerations include: • Ergonomic modification • Reduction of sustained wrist postures • Tendon or nerve-gliding exercise when appropriate • Monitoring strength and sensation • Evaluation of contributing systemic conditions The 2024 AAOS guideline addresses evidence-based diagnosis and treatment of adult carpal tunnel syndrome.
Question 4 of 4NPLEX-PM-020

Which finding most strongly supports referral for further evaluation?

Answer and Clinical Rationale

Correct answer: B. Progressive thenar atrophy and persistent motor weakness
Explanation Progressive motor deficit or thenar atrophy suggests more advanced median-nerve dysfunction and warrants prompt assessment. Electrodiagnostic testing may be useful when the diagnosis is uncertain, symptoms are severe, or surgery is being considered.
Diagnosis: Carpal tunnel syndrome Key tests: Phalen, Tinel, sensory examination, thenar strength Differential diagnosis: Cervical radiculopathy, pronator syndrome, peripheral neuropathy, ulnar neuropathy Treatment: Neutral night splint, ergonomic changes, activity modification, selected exercises Referral indications: Persistent weakness, thenar atrophy, severe sensory loss, failure of conservative care NPLEX trap: Tinel and Phalen tests support but do not independently prove the diagnosis.
6

Lateral Epicondylalgia

4 questions · Physical Medicine

Clinical Case
A 42-year-old recreational tennis player develops pain over the lateral right elbow after increasing backhand practice. The pain is worse with gripping, lifting a kettle, and resisted wrist extension. Examination reveals: • Tenderness near the lateral epicondyle • Pain with resisted wrist extension • Positive Cozen test • Pain during passive wrist-flexor stretch with the elbow extended • Normal sensory and reflex examination
Question 1 of 4NPLEX-PM-021

What is the most likely diagnosis?

Answer and Clinical Rationale

Correct answer: A. Lateral epicondylalgia
Explanation Lateral epicondylalgia is characterized by lateral elbow pain associated with gripping and loading of the wrist-extensor tendon complex.
Question 2 of 4NPLEX-PM-022

Which orthopedic test most directly assesses this condition?

Answer and Clinical Rationale

Correct answer: A. Cozen test
Explanation The Cozen test provokes lateral elbow pain through resisted wrist extension, usually with radial deviation. • B: De Quervain tenosynovitis • C: Carpal tunnel syndrome • D: Long-head biceps tendon • E: Knee or ankle ligament stability depending on technique Lateral elbow pain and its relevant tests are included within published orthopedic physical-therapy guidance.
Question 3 of 4NPLEX-PM-023

What is the most appropriate rehabilitation approach?

Answer and Clinical Rationale

Correct answer: B. Progressive wrist-extensor loading and modification of aggravating activities
Explanation A reasonable plan includes: • Temporary reduction of high-load gripping • Isometric wrist-extensor exercise during an irritable phase • Progressive isotonic and eccentric loading • Grip-strength rehabilitation • Shoulder and scapular conditioning where relevant • Racquet, technique, and workplace modification
Question 4 of 4NPLEX-PM-024

Which finding would make the original diagnosis less likely and suggest neurologic evaluation?

Answer and Clinical Rationale

Correct answer: C. Widespread sensory loss with reduced reflexes
Explanation Lateral epicondylalgia is a local tendon-related disorder and should not produce widespread dermatomal sensory loss or reflex abnormalities. Such findings suggest cervical radiculopathy or peripheral nerve disease.
Diagnosis: Lateral epicondylalgia Differential diagnosis: Radial tunnel syndrome, cervical radiculopathy, radiocapitellar arthritis, fracture Key tests: Cozen, Mill, resisted middle-finger or wrist extension as clinically appropriate Treatment: Load modification, progressive strengthening, ergonomics, optional bracing Manual therapy: May provide short-term symptom relief when combined with exercise NPLEX trap: “Tennis elbow” is not limited to tennis players.
7

Anterior Cruciate Ligament Injury

4 questions · Physical Medicine

Clinical Case
A 23-year-old soccer player plants the right foot and rapidly changes direction. The knee twists inward, and the patient hears a pop. A large effusion develops within two hours. The knee feels unstable. Examination reveals: • Increased anterior tibial translation • Soft endpoint on Lachman testing • No fracture deformity • Intact distal pulses and sensation
Question 1 of 4NPLEX-PM-025

Which structure is most likely injured?

Answer and Clinical Rationale

Correct answer: B. Anterior cruciate ligament
Explanation A noncontact pivoting mechanism, audible pop, rapid effusion, instability, and positive Lachman test strongly suggest ACL injury.
Question 2 of 4NPLEX-PM-026

Which test is most useful for evaluating the suspected injury?

Answer and Clinical Rationale

Correct answer: A. Lachman test
Explanation The Lachman test assesses anterior tibial translation relative to the femur and the quality of the endpoint. AAOS guidance supports a focused history and physical examination, including Lachman testing, when evaluating suspected ACL injury.
Question 3 of 4NPLEX-PM-027

What is the most appropriate immediate management?

Answer and Clinical Rationale

Correct answer: B. Protect the knee, control swelling, assess associated injury, and begin safe motion as appropriate
Explanation Initial priorities include: • Protection from further pivoting • Swelling and pain management • Neurovascular assessment • Evaluation for associated meniscal or collateral injury • Appropriate imaging or orthopedic assessment • Restoration of extension and quadriceps activation when safe
Question 4 of 4NPLEX-PM-028

Which rehabilitation component is especially important before returning to pivoting sport?

Answer and Clinical Rationale

Correct answer: B. Neuromuscular, balance, strength, and sport-specific movement training
Explanation Return-to-sport rehabilitation should address: • Full or near-full range of motion • Quadriceps and hamstring strength • Single-leg control • Balance and proprioception • Landing and cutting mechanics • Functional testing • Psychological readiness
Diagnosis: ACL tear Differential diagnosis: Meniscal tear, patellar dislocation, collateral ligament injury, osteochondral injury Investigation: MRI can define associated soft-tissue injuries when results affect management; radiography may be required after trauma Treatment: Individualized operative or nonoperative management based on instability, activity demands, associated injuries, and preferences NPLEX trap: A negative McMurray test does not exclude an ACL injury.
8

Hip Osteoarthritis

4 questions · Physical Medicine

Clinical Case
A 67-year-old patient reports gradually progressive right groin pain and stiffness. Symptoms worsen with walking, stairs, and putting on shoes. Morning stiffness lasts approximately 20 minutes. Examination reveals: • Reduced hip internal rotation • Groin pain with passive internal rotation • Reduced hip flexion • Mild antalgic gait • No fever or systemic illness
Question 1 of 4NPLEX-PM-029

What is the most likely diagnosis?

Answer and Clinical Rationale

Correct answer: A. Hip osteoarthritis
Explanation Typical hip osteoarthritis findings include: • Age over 50 • Activity-related anterior hip or groin pain • Brief morning stiffness • Reduced internal rotation and flexion • Pain with weight-bearing These features are reflected in current hip osteoarthritis guidelines.
Question 2 of 4NPLEX-PM-030

Which examination finding is particularly characteristic?

Answer and Clinical Rationale

Correct answer: B. Painful and restricted internal rotation
Explanation Internal rotation is frequently one of the first hip movements to become restricted or painful in osteoarthritis.
Question 3 of 4NPLEX-PM-031

What is the most appropriate conservative physical medicine plan?

Answer and Clinical Rationale

Correct answer: A. Progressive strengthening, aerobic activity, mobility exercise, and functional training
Explanation Management may include: • Hip-abductor and extensor strengthening • Low-impact aerobic exercise • Range-of-motion work • Gait and balance training • Weight-management support when applicable • Activity pacing • Assistive-device assessment Manual therapy may provide short-term pain or mobility benefit in selected patients, but it should be combined with active treatment.
Question 4 of 4NPLEX-PM-032

Which presentation requires urgent assessment rather than routine osteoarthritis rehabilitation?

Answer and Clinical Rationale

Correct answer: C. Acutely hot, severely painful hip with fever and inability to bear weight
Explanation This presentation raises concern for septic arthritis or another acute destructive process. Manual therapy and routine exercise should be postponed until urgent medical assessment is completed.
Diagnosis: Hip osteoarthritis Differential diagnosis: Lumbar radiculopathy, femoral neck fracture, septic arthritis, avascular necrosis, greater trochanteric pain syndrome Investigations: Weight-bearing radiography when confirmation will affect management; laboratory tests if inflammatory or infectious disease is suspected Treatment: Education, exercise, weight management, walking aid, medication discussion, referral when symptoms remain severe NPLEX trap: Hip-joint disease frequently presents as groin pain and may also be felt at the knee.
9

Lateral Ankle Sprain

4 questions · Physical Medicine

Clinical Case
A 19-year-old basketball player lands on another player’s foot and sustains an inversion injury. The lateral ankle becomes swollen and painful. The patient can take four steps with discomfort. Examination shows: • Tenderness over the anterior talofibular ligament • No tenderness at the posterior edge of either malleolus • No tenderness at the base of the fifth metatarsal • Mild laxity and pain with anterior drawer testing • Intact pulses and sensation
Question 1 of 4NPLEX-PM-033

Which ligament is most likely injured?

Answer and Clinical Rationale

Correct answer: B. Anterior talofibular ligament
Explanation The anterior talofibular ligament is commonly injured during plantar-flexion and inversion trauma.
Question 2 of 4NPLEX-PM-034

Which orthopedic test assesses the suspected ligament?

Answer and Clinical Rationale

Correct answer: A. Ankle anterior drawer test
Explanation The ankle anterior drawer test evaluates anterior translation of the talus and helps assess the anterior talofibular ligament.
Question 3 of 4NPLEX-PM-035

What is the most appropriate early rehabilitation approach for an uncomplicated sprain?

Answer and Clinical Rationale

Correct answer: B. Protected weight-bearing with external support and progressive exercise
Explanation For many uncomplicated lateral ankle sprains, functional treatment includes: • External support such as a brace or taping • Progressive weight-bearing • Range-of-motion exercise • Strengthening • Balance and proprioceptive training • Gradual return to sport Current ankle-sprain guidance supports structured functional rehabilitation and exercise rather than unnecessary prolonged immobilization.
Question 4 of 4NPLEX-PM-036

Which intervention best reduces the risk of recurrent ankle sprain?

Answer and Clinical Rationale

Correct answer: B. Balance and proprioceptive training
Explanation Neuromuscular and balance training improves dynamic control and can reduce recurrence risk. Examples include: • Single-leg stance • Progression to unstable surfaces • Star-excursion-type tasks • Hopping and landing control • Sport-specific cutting drills
Diagnosis: Lateral ankle sprain, likely ATFL involvement Differential diagnosis: Ankle fracture, syndesmotic injury, peroneal-tendon injury, osteochondral lesion, fifth-metatarsal fracture Key tests: Anterior drawer, talar tilt, palpation, weight-bearing ability Treatment: Protection, compression, external support, early appropriate loading, exercise NPLEX trap: Do not assume every inversion injury is a simple sprain; apply fracture-screening criteria and assess the entire foot and ankle.
10

Achilles-Tendon Rupture

4 questions · Physical Medicine

Clinical Case
A 46-year-old recreational badminton player suddenly feels as though someone kicked the back of the left ankle while pushing off. The patient falls and cannot continue playing. Examination reveals: • A palpable gap several centimetres above the calcaneus • Weak plantar flexion • Inability to perform a single-leg heel raise • Positive Thompson squeeze test • Intact distal circulation
Question 1 of 4NPLEX-PM-037

What is the most likely diagnosis?

Answer and Clinical Rationale

Correct answer: B. Achilles-tendon rupture
Explanation The sudden “kicked in the heel” sensation, functional loss, tendon gap, and positive Thompson test are characteristic of Achilles rupture.
Question 2 of 4NPLEX-PM-038

What constitutes a positive Thompson test?

Answer and Clinical Rationale

Correct answer: B. Compression of the calf fails to produce normal plantar flexion
Explanation With an intact Achilles tendon, squeezing the calf produces passive plantar flexion. Absence or marked reduction of this movement indicates tendon discontinuity.
Question 3 of 4NPLEX-PM-039

What is the most appropriate immediate management?

Answer and Clinical Rationale

Correct answer: B. Immobilize in relative plantar flexion, restrict unsafe loading, and arrange prompt orthopedic assessment
Explanation Initial care protects the tendon ends by positioning the ankle in plantar flexion and arranging specialist evaluation. Both surgical and structured nonsurgical approaches may be considered depending on patient factors, timing, activity demands, and available rehabilitation.
Question 4 of 4NPLEX-PM-040

Which treatment is contraindicated during the immediate acute stage?

Answer and Clinical Rationale

Correct answer: D. Forceful dorsiflexion stretching across the ruptured tendon
Explanation Forceful dorsiflexion can separate the tendon ends and interfere with healing. Rehabilitation must follow an appropriate staged protocol.
Diagnosis: Acute Achilles-tendon rupture Differential diagnosis: Gastrocnemius strain, plantaris injury, Achilles tendinopathy, ankle fracture Key test: Thompson squeeze test Imaging: Often a clinical diagnosis; ultrasound or MRI may be used when the diagnosis or extent is uncertain Treatment: Plantar-flexion protection, specialist assessment, operative or functional nonsurgical protocol Rehabilitation: Gradual weight-bearing, controlled ankle motion, progressive calf strengthening, balance training, functional return NPLEX trap: Some plantar flexion may remain because other muscles can plantar-flex the ankle; this does not exclude rupture.
11

Lumbar Disc Herniation with L5 Radiculopathy

4 questions · Physical Medicine

Clinical Case
A 39-year-old warehouse worker develops low-back pain after lifting a heavy box. Two days later, the pain begins radiating down the lateral thigh and leg to the dorsum of the right foot and great toe. Examination reveals: • Positive straight-leg raise on the right • Reduced sensation over the dorsum of the foot • Weakness of great-toe extension • Difficulty heel walking • Normal bowel and bladder function • No saddle anesthesia • No fever or history of malignancy
Question 1 of 4NPLEX-PM-041

Which nerve root is most likely affected?

Answer and Clinical Rationale

Correct answer: D. L5
Explanation L5 radiculopathy commonly produces: • Pain extending down the lateral leg • Sensory changes over the dorsum of the foot and great toe • Weakness of great-toe extension • Weakness of ankle dorsiflexion • Difficulty heel walking Why the alternatives are less likely: • L2–L3: More likely to affect the anterior thigh and hip flexion. • L4: May affect the medial leg, knee extension, and patellar reflex. • S1: Commonly affects the lateral foot, plantar flexion, and Achilles reflex.
Question 2 of 4NPLEX-PM-042

Which orthopedic test is most appropriate for reproducing lumbosacral nerve-root symptoms?

Answer and Clinical Rationale

Correct answer: A. Straight-leg raise
Explanation The straight-leg raise increases tension on the lumbosacral nerve roots and sciatic nerve. Reproduction of radiating leg symptoms, rather than isolated posterior-thigh tightness, supports nerve-root irritation. A positive result is more clinically meaningful when it reproduces the patient’s familiar radicular symptoms.
Question 3 of 4NPLEX-PM-043

What is the most appropriate initial management?

Answer and Clinical Rationale

Correct answer: C. Relative activity modification, education, symptom-guided movement, and monitored rehabilitation
Explanation In the absence of emergency findings, management may include: • Avoiding aggravating lifting temporarily • Remaining active within tolerable limits • Direction-specific movement when helpful • Gradual trunk and lower-extremity strengthening • Ergonomic and lifting education • Monitoring strength, reflexes, and sensation Prolonged bed rest may worsen deconditioning and delay functional recovery.
Question 4 of 4NPLEX-PM-044

Which new symptom requires immediate emergency referral?

Answer and Clinical Rationale

Correct answer: C. Urinary retention with saddle anesthesia
Explanation Urinary dysfunction and saddle sensory loss raise concern for cauda equina syndrome. Manual therapy and routine rehabilitation must stop while emergency assessment is arranged.
Diagnosis: Lumbar disc herniation with L5 radiculopathy Differential diagnosis: Peroneal neuropathy, lumbar stenosis, piriformis syndrome, hip disease Key tests: Straight-leg raise, myotomal strength, dermatomes, reflexes, gait Imaging: Consider MRI for progressive weakness, emergency red flags, severe persistent symptoms, or when invasive treatment is being considered Treatment: Education, graded activity, appropriate exercise, symptom monitoring NPLEX trap: Back pain with leg radiation is not automatically a surgical emergency; neurologic red flags determine urgency.
12

Lumbar Spinal Stenosis

4 questions · Physical Medicine

Clinical Case
A 72-year-old patient reports low-back discomfort and bilateral leg heaviness after walking approximately 200 metres. Symptoms improve after sitting or leaning forward over a shopping cart. Standing upright and walking downhill worsen the symptoms. Examination reveals: • Mildly reduced lumbar extension • Symptoms reproduced with prolonged extension • Relief in lumbar flexion • Normal peripheral pulses • No saddle anesthesia • No major motor deficit
Question 1 of 4NPLEX-PM-045

What is the most likely diagnosis?

Answer and Clinical Rationale

Correct answer: A. Lumbar spinal stenosis with neurogenic claudication
Explanation Neurogenic claudication is characterized by leg pain, weakness, numbness, or heaviness provoked by standing and walking and relieved by sitting or lumbar flexion. The “shopping-cart sign” is a classic clue.
Question 2 of 4NPLEX-PM-046

Which feature best differentiates neurogenic claudication from peripheral arterial claudication?

Answer and Clinical Rationale

Correct answer: B. Neurogenic symptoms frequently improve with sitting or spinal flexion
Explanation Neurogenic claudication is posture-dependent. Sitting or flexing the lumbar spine may enlarge the spinal canal and reduce symptoms. Vascular claudication is more closely related to muscular exertion and may improve by stopping activity regardless of spinal position. Peripheral pulses and vascular risk assessment are important.
Question 3 of 4NPLEX-PM-047

Which exercise program is most appropriate?

Answer and Clinical Rationale

Correct answer: B. Flexion-tolerant aerobic conditioning and progressive trunk and lower-extremity strengthening
Explanation A program may include: • Stationary cycling • Supported walking • Flexion-tolerant mobility • Hip and lower-extremity strengthening • Trunk endurance exercise • Balance training • Gradual walking progression Exercise selection should reflect the patient’s symptoms, function, and comorbidities.
Question 4 of 4NPLEX-PM-048

Which finding requires urgent reassessment rather than routine rehabilitation?

Answer and Clinical Rationale

Correct answer: C. New urinary retention and rapidly progressive bilateral weakness
Explanation These symptoms raise concern for severe neurologic compression, including cauda equina syndrome. Emergency imaging and specialist assessment are required.
Diagnosis: Lumbar spinal stenosis with neurogenic claudication Differential diagnosis: Peripheral arterial disease, hip osteoarthritis, peripheral neuropathy, disc herniation Key assessment: Walking tolerance, posture dependence, pulses, neurologic findings Treatment: Education, activity modification, flexion-tolerant conditioning, strengthening, balance work Referral: Progressive neurologic loss, bladder dysfunction, severe disability despite conservative care NPLEX trap: Leg pain with walking is not always vascular; determine whether posture changes the symptoms.
13

Thoracic Outlet Syndrome

4 questions · Physical Medicine

Clinical Case
A 32-year-old hairstylist reports intermittent aching, paresthesia, and heaviness in the right arm, especially while working with the arm elevated. Symptoms involve the medial forearm and the fourth and fifth fingers. Examination reveals: • Rounded-shoulder posture • Symptoms reproduced during sustained overhead positioning • Positive Roos test • Tight pectoralis minor and scalene muscles • No persistent motor deficit • Normal arm colour and temperature at rest
Question 1 of 4NPLEX-PM-049

What is the most likely diagnosis?

Answer and Clinical Rationale

Correct answer: A. Neurogenic thoracic outlet syndrome
Explanation Thoracic outlet syndrome may involve compression or irritation of the brachial plexus as it passes through the thoracic outlet. Supporting findings include: • Symptoms during sustained arm elevation • Paresthesia in the medial forearm or ulnar hand • Arm heaviness • Postural and occupational contributors • Reproduction with provocative positioning
Question 2 of 4NPLEX-PM-050

Which orthopedic test requires the patient to hold the arms in an elevated “surrender” position while repeatedly opening and closing the hands?

Answer and Clinical Rationale

Correct answer: A. Roos test
Explanation During the Roos test, the patient maintains shoulder abduction and external rotation while opening and closing the hands. Reproduction of heaviness, fatigue, pain, or paresthesia may support thoracic outlet involvement. Provocative tests may produce false-positive results and must not be interpreted in isolation.
Question 3 of 4NPLEX-PM-051

Which rehabilitation approach is most appropriate?

Answer and Clinical Rationale

Correct answer: A. Postural correction, breathing mechanics, scapular control, and gradual shoulder-girdle conditioning
Explanation Rehabilitation may include: • Reducing prolonged overhead positions • Scapular retraction and upward-rotation control • Pectoralis minor and scalene mobility • Thoracic mobility • Diaphragmatic breathing • Ergonomic modification • Gradual endurance training Treatment must be individualized because excessive stretching or strengthening may worsen symptoms in some patients.
Question 4 of 4NPLEX-PM-052

Which finding requires urgent vascular referral?

Answer and Clinical Rationale

Correct answer: C. Sudden arm swelling, cyanosis, and prominent superficial veins
Explanation Sudden swelling and cyanosis raise concern for venous obstruction or upper-extremity thrombosis. Pallor, coolness, severe ischemic pain, or loss of pulse may indicate arterial compromise.
Diagnosis: Neurogenic thoracic outlet syndrome Differential diagnosis: Cervical radiculopathy, ulnar neuropathy, carpal tunnel syndrome, shoulder disease Orthopedic tests: Roos, Adson, reverse Adson, Wright hyperabduction Treatment: Ergonomics, postural rehabilitation, scapular endurance, breathing and mobility work Referral: Swelling, cyanosis, pallor, ischemia, thrombosis, progressive weakness NPLEX trap: Loss of the radial pulse during a provocative test does not independently confirm thoracic outlet syndrome.
14

De Quervain Tenosynovitis

4 questions · Physical Medicine

Clinical Case
A 36-year-old parent of a six-month-old infant reports pain along the radial side of the right wrist. The pain is aggravated by lifting the infant, gripping, and moving the thumb. Examination reveals: • Tenderness over the radial styloid • Pain with resisted thumb abduction and extension • Positive Finkelstein test • No numbness or tingling • Negative Phalen test
Question 1 of 4NPLEX-PM-053

What is the most likely diagnosis?

Answer and Clinical Rationale

Correct answer: B. De Quervain tenosynovitis
Explanation De Quervain tenosynovitis involves the first dorsal wrist compartment, primarily affecting the: • Abductor pollicis longus • Extensor pollicis brevis Pain is typically located near the radial styloid and worsens with thumb movement, gripping, or lifting.
Question 2 of 4NPLEX-PM-054

Which test most directly supports the diagnosis?

Answer and Clinical Rationale

Correct answer: A. Finkelstein test
Explanation The Finkelstein test places tension on the first dorsal compartment tendons and reproduces pain near the radial styloid. The maneuver should be performed carefully because excessive force can cause pain even in an unaffected wrist.
Question 3 of 4NPLEX-PM-055

What is the most appropriate initial physical medicine prescription?

Answer and Clinical Rationale

Correct answer: A. Thumb-spica support, activity modification, and gradual tendon rehabilitation
Explanation Conservative management may include: • Thumb-spica orthosis • Modification of lifting technique • Reduction of repetitive thumb loading • Gentle pain-free mobility • Progressive strengthening after irritability decreases • Ergonomic education The patient may be taught to lift the infant using the forearms and palms rather than placing sustained stress through the thumb.
Question 4 of 4NPLEX-PM-056

Which finding suggests an alternative diagnosis requiring imaging?

Answer and Clinical Rationale

Correct answer: C. Anatomical-snuffbox tenderness after a fall on an outstretched hand
Explanation Snuffbox tenderness after trauma raises concern for a scaphoid fracture. A fracture may initially be radiographically occult and should not be treated as simple tendinopathy.
Diagnosis: De Quervain tenosynovitis Key test: Finkelstein test Differential diagnosis: Scaphoid fracture, thumb-base osteoarthritis, radial sensory neuropathy, intersection syndrome Treatment: Load modification, thumb-spica support, graded exercise Referral: Persistent disability, suspected fracture, severe swelling, neurologic symptoms NPLEX trap: De Quervain disease produces pain, not median-nerve sensory loss.
15

Medial Epicondylalgia

4 questions · Physical Medicine

Clinical Case
A 48-year-old golfer reports gradual pain along the medial aspect of the dominant elbow. The pain is worse when gripping the club, flexing the wrist, and pronating the forearm. Examination reveals: • Tenderness just distal to the medial epicondyle • Pain with resisted wrist flexion • Pain with resisted forearm pronation • No sensory loss in the fourth or fifth fingers • Stable elbow valgus testing
Question 1 of 4NPLEX-PM-057

What is the most likely diagnosis?

Answer and Clinical Rationale

Correct answer: A. Medial epicondylalgia
Explanation Medial epicondylalgia involves the common flexor-pronator tendon origin. It is associated with repetitive gripping, wrist flexion, and forearm pronation.
Question 2 of 4NPLEX-PM-058

Which examination finding best supports the diagnosis?

Answer and Clinical Rationale

Correct answer: A. Pain with resisted wrist flexion and pronation
Explanation The wrist flexor and pronator muscles originate near the medial epicondyle. Loading these tissues reproduces local tendon pain.
Question 3 of 4NPLEX-PM-059

What is the most appropriate rehabilitation approach?

Answer and Clinical Rationale

Correct answer: A. Progressive flexor-pronator loading with modification of aggravating activities
Explanation Rehabilitation may include: • Temporary reduction of painful gripping • Isometric wrist-flexor exercise • Progressive concentric and eccentric loading • Grip-strength progression • Shoulder and trunk mechanics • Golf-technique assessment • Gradual return to play
Question 4 of 4NPLEX-PM-060

Which symptom suggests associated ulnar neuropathy?

Answer and Clinical Rationale

Correct answer: B. Numbness and tingling in the small finger and ulnar half of the ring finger
Explanation The ulnar nerve passes posterior to the medial epicondyle. Sensory symptoms in the small finger and ulnar ring finger suggest cubital tunnel syndrome or another ulnar neuropathy.
Diagnosis: Medial epicondylalgia Differential diagnosis: Ulnar neuropathy, UCL injury, cervical radiculopathy, elbow arthritis Key examination: Local tenderness, resisted wrist flexion and pronation Treatment: Load management, progressive tendon strengthening, technique correction NPLEX trap: Medial-elbow pain with ulnar sensory symptoms should not be treated as isolated tendinopathy.
16

Meniscal Tear

4 questions · Physical Medicine

Clinical Case
A 34-year-old patient twists the right knee while rising from a deep squat. The patient develops medial joint-line pain, intermittent swelling, catching, and difficulty fully extending the knee. Examination reveals: • Medial joint-line tenderness • Pain and clicking during McMurray testing • Stable Lachman test • No major valgus or varus instability • Mild effusion
Question 1 of 4NPLEX-PM-061

What is the most likely diagnosis?

Answer and Clinical Rationale

Correct answer: A. Medial meniscal tear
Explanation A twisting mechanism combined with joint-line pain, catching, swelling, restricted extension, and a positive McMurray test supports a meniscal tear.
Question 2 of 4NPLEX-PM-062

Which test most directly evaluates a suspected meniscal tear?

Answer and Clinical Rationale

Correct answer: A. McMurray test
Explanation The McMurray test uses knee flexion, extension, and tibial rotation to stress the menisci. Joint-line pain, clicking, or a palpable clunk may support meniscal pathology.
Question 3 of 4NPLEX-PM-063

What is the most appropriate initial management when the knee is not mechanically locked?

Answer and Clinical Rationale

Correct answer: A. Activity modification, swelling control, range-of-motion restoration, and progressive strengthening
Explanation A conservative program may include: • Temporary reduction of twisting and deep squatting • Swelling control • Restoration of extension and flexion • Quadriceps and hip strengthening • Balance and functional training • Gradual return to activity Not every meniscal tear requires surgery.
Question 4 of 4NPLEX-PM-064

Which finding requires prompt orthopedic assessment?

Answer and Clinical Rationale

Correct answer: B. A truly locked knee that cannot fully extend
Explanation A displaced meniscal fragment may mechanically block knee extension. Persistent true locking requires prompt evaluation.
Diagnosis: Medial meniscal tear Differential diagnosis: ACL injury, collateral ligament injury, osteoarthritis, osteochondral injury Key tests: McMurray, Apley compression, joint-line palpation Imaging: MRI may be useful when diagnosis is uncertain, mechanical locking is present, or surgery is being considered Treatment: Exercise-based rehabilitation for appropriate cases; referral for locked knee or persistent major dysfunction NPLEX trap: Clicking alone is nonspecific; combine it with mechanism, pain location, swelling, and functional loss.
17

Patellofemoral Pain Syndrome

4 questions · Physical Medicine

Clinical Case
A 21-year-old runner reports gradual anterior knee pain without trauma. Symptoms worsen while descending stairs, squatting, running downhill, and sitting through long lectures. Examination reveals: • Peripatellar tenderness • Pain during a single-leg squat • Dynamic knee valgus • Weak hip abductors • No large effusion • Stable ligament testing • No true locking
Question 1 of 4NPLEX-PM-065

What is the most likely diagnosis?

Answer and Clinical Rationale

Correct answer: A. Patellofemoral pain syndrome
Explanation Patellofemoral pain is typically characterized by poorly localized anterior or retropatellar pain aggravated by activities that load the patellofemoral joint. Common aggravating activities include: • Squatting • Stair climbing • Running • Jumping • Prolonged sitting
Question 2 of 4NPLEX-PM-066

Which functional finding is most relevant to rehabilitation?

Answer and Clinical Rationale

Correct answer: A. Dynamic knee valgus during a single-leg squat
Explanation Dynamic valgus may reflect impaired control of the hip, pelvis, and lower extremity. It can guide strengthening and movement-retraining strategies.
Question 3 of 4NPLEX-PM-067

Which treatment is most appropriate?

Answer and Clinical Rationale

Correct answer: A. Progressive hip and knee strengthening with load modification
Explanation Management may include: • Hip-abductor and external-rotator strengthening • Quadriceps strengthening • Movement retraining • Gradual running-load modification • Temporary reduction of downhill running • Foot or ankle assessment when relevant • Short-term taping or orthoses in selected patients Exercise is the central treatment rather than passive modalities alone.
Question 4 of 4NPLEX-PM-068

Which finding suggests a different and potentially urgent diagnosis?

Answer and Clinical Rationale

Correct answer: C. Hot swollen knee with fever and inability to bear weight
Explanation A hot, acutely swollen joint with fever raises concern for septic arthritis. Routine exercise and manual therapy should be postponed pending urgent medical assessment.
Diagnosis: Patellofemoral pain syndrome Differential diagnosis: Patellar instability, tendinopathy, meniscal injury, osteochondral lesion, referred hip pain Key assessment: Squat mechanics, hip strength, patellar symptoms, training load Treatment: Progressive hip and knee exercise, load management, movement correction Adjuncts: Patellar taping or foot orthoses may help selected patients temporarily NPLEX trap: Patellofemoral pain is not diagnosed by imaging findings alone.
18

Greater Trochanteric Pain Syndrome

4 questions · Physical Medicine

Clinical Case
A 55-year-old woman reports gradually progressive pain over the lateral right hip. The pain worsens when lying on the affected side, climbing stairs, and standing on one leg. Examination reveals: • Tenderness over the greater trochanter • Pain with resisted hip abduction • Pelvic drop during single-leg stance • Nearly full hip-joint range of motion • No groin pain during passive internal rotation • Normal neurologic examination
Question 1 of 4NPLEX-PM-069

What is the most likely diagnosis?

Answer and Clinical Rationale

Correct answer: A. Greater trochanteric pain syndrome
Explanation Greater trochanteric pain syndrome commonly involves gluteus medius or minimus tendinopathy, with or without bursal irritation. Typical findings include: • Lateral hip pain • Pain while lying on the affected side • Greater-trochanter tenderness • Pain with hip-abductor loading • Reduced single-leg pelvic control
Question 2 of 4NPLEX-PM-070

Which examination most directly evaluates hip-abductor function?

Answer and Clinical Rationale

Correct answer: A. Trendelenburg test
Explanation During single-leg stance, weakness or painful inhibition of the stance-side hip abductors may allow the opposite side of the pelvis to drop.
Question 3 of 4NPLEX-PM-071

What is the most appropriate rehabilitation strategy?

Answer and Clinical Rationale

Correct answer: A. Progressive gluteal strengthening while reducing compressive positions
Explanation Management may include: • Avoiding prolonged side-lying on the affected side • Using a pillow between the knees when side-lying • Avoiding standing with the hip “hanging” into adduction • Isometric hip-abductor exercise • Progressive gluteal strengthening • Gait and pelvic-control training • Gradual return to stairs and walking
Question 4 of 4NPLEX-PM-072

Which finding would make isolated greater trochanteric pain syndrome less likely?

Answer and Clinical Rationale

Correct answer: C. Marked groin pain with restricted passive hip internal rotation
Explanation Groin pain with restricted hip internal rotation is more suggestive of intra-articular hip disease, including osteoarthritis.
Diagnosis: Greater trochanteric pain syndrome Differential diagnosis: Hip osteoarthritis, lumbar radiculopathy, femoral stress fracture, meralgia paresthetica Key tests: Palpation, resisted abduction, Trendelenburg, single-leg stance Treatment: Load modification and progressive gluteal rehabilitation NPLEX trap: “Trochanteric bursitis” may actually represent gluteal tendon pathology rather than isolated bursal inflammation.
19

Sacroiliac Joint Pain

4 questions · Physical Medicine

Clinical Case
A 41-year-old patient develops unilateral pain near the right posterior superior iliac spine after stepping awkwardly off a curb. The pain is worse when transitioning from sitting to standing and while climbing stairs. Examination reveals: • Pain localized below the belt line • No dermatomal sensory loss • Normal lower-extremity reflexes • Positive Gaenslen test • Positive pelvic compression and distraction tests • Negative straight-leg raise
Question 1 of 4NPLEX-PM-073

What is the most likely pain source?

Answer and Clinical Rationale

Correct answer: A. Sacroiliac joint region
Explanation Unilateral pain near the posterior superior iliac spine with reproduction during multiple sacroiliac provocation tests supports sacroiliac-region pain. No single test is sufficiently diagnostic. A cluster of concordant provocation tests is more useful.
Question 2 of 4NPLEX-PM-074

Which test is commonly used to provoke sacroiliac-region pain?

Answer and Clinical Rationale

Correct answer: A. Gaenslen test
Explanation Gaenslen testing applies torsional stress across the pelvis and sacroiliac joints. A positive test reproduces the patient’s familiar pain.
Question 3 of 4NPLEX-PM-075

What is the most appropriate initial treatment?

Answer and Clinical Rationale

Correct answer: A. Education, temporary load modification, lumbopelvic stabilization, and graded functional exercise
Explanation A rehabilitation plan may include: • Activity modification • Hip and trunk strengthening • Lumbopelvic stabilization • Movement retraining • Gradual return to lifting and stairs • Selected manual therapy when no contraindications are present Manual therapy may provide short-term relief but should generally be combined with active rehabilitation.
Question 4 of 4NPLEX-PM-076

Which presentation requires investigation for inflammatory sacroiliitis?

Answer and Clinical Rationale

Correct answer: B. Chronic morning stiffness, alternating buttock pain, and improvement with exercise
Explanation Features suggesting inflammatory axial disease include: • Gradual onset at a younger age • Prolonged morning stiffness • Improvement with exercise • Night pain • Alternating buttock pain • Associated psoriasis, inflammatory bowel disease, or uveitis
Diagnosis: Mechanical sacroiliac-region pain Differential diagnosis: Lumbar radiculopathy, hip disease, fracture, inflammatory sacroiliitis, pelvic pathology Tests: Gaenslen, pelvic compression, distraction, thigh thrust, FABER as clinically appropriate Treatment: Education, stabilization, progressive exercise, selected manual care NPLEX trap: Apparent pelvic asymmetry alone does not establish sacroiliac dysfunction.
20

Plantar Fasciitis

4 questions · Physical Medicine

Clinical Case
A 49-year-old restaurant worker reports pain at the plantar-medial aspect of the right heel. The pain is most severe with the first few steps in the morning and after standing following a period of rest. It improves briefly after walking but returns after a long shift. Examination reveals: • Tenderness at the medial calcaneal tubercle • Pain with passive extension of the great toe • Limited ankle dorsiflexion • Tight calf muscles • Normal sensation and pulses • No swelling or bruising from acute trauma
Question 1 of 4NPLEX-PM-077

What is the most likely diagnosis?

Answer and Clinical Rationale

Correct answer: A. Plantar fasciitis
Explanation Plantar fasciitis typically causes: • Plantar-medial heel pain • Severe pain with the first steps after rest • Tenderness near the medial calcaneal tubercle • Pain after prolonged standing or walking • Tightness of the calf and limited dorsiflexion in some patients
Question 2 of 4NPLEX-PM-078

Which maneuver may reproduce plantar-fascia pain?

Answer and Clinical Rationale

Correct answer: A. Passive extension of the great toe
Explanation Great-toe extension tensions the plantar fascia through the windlass mechanism. Reproduction of heel pain supports plantar-fascia involvement.
Question 3 of 4NPLEX-PM-079

What is the most appropriate initial treatment plan?

Answer and Clinical Rationale

Correct answer: A. Plantar-fascia and calf stretching, load modification, supportive footwear, and progressive strengthening
Explanation Management may include: • Plantar-fascia-specific stretching • Gastrocnemius and soleus stretching • Supportive footwear • Temporary reduction of high-impact loading • Foot and calf strengthening • Taping • Short-term orthotic support • Night splint in selected patients with persistent morning pain • Gradual return to walking or running
Question 4 of 4NPLEX-PM-080

Which finding should prompt investigation for a calcaneal stress fracture rather than routine plantar-fascia treatment?

Answer and Clinical Rationale

Correct answer: C. Progressive pain after a rapid increase in running with a positive calcaneal squeeze test
Explanation A calcaneal stress fracture may cause progressively worsening pain with loading, diffuse heel tenderness, and pain when the calcaneus is compressed from both sides. High-impact rehabilitation should be postponed until fracture is excluded.
Diagnosis: Plantar fasciitis Differential diagnosis: Calcaneal stress fracture, fat-pad syndrome, nerve entrapment, inflammatory enthesitis, Achilles disorder Key assessment: First-step pain, medial calcaneal tenderness, great-toe extension, calf flexibility Treatment: Stretching, load modification, footwear support, progressive strengthening NPLEX trap: A heel spur on radiography does not necessarily identify the source of pain.
21

Whiplash-Associated Disorder

4 questions · Physical Medicine

Clinical Case
A 34-year-old woman is evaluated two days after a rear-end motor-vehicle collision. She was wearing a seat belt and did not lose consciousness. She reports neck pain, stiffness, and occipital headache. Examination reveals: • Mildly reduced cervical range of motion • Bilateral upper-trapezius tenderness • Normal upper-extremity strength and sensation • Symmetric reflexes • No midline cervical spinous-process tenderness • No gait disturbance • No bowel or bladder symptoms
Question 1 of 4NPLEX-PM-081

What is the most likely diagnosis?

Answer and Clinical Rationale

Correct answer: B. Uncomplicated whiplash-associated disorder
Explanation The patient has neck pain and musculoskeletal tenderness after an acceleration-deceleration injury without neurologic deficit, fracture findings, or other serious red flags. Common symptoms include: • Neck pain and stiffness • Headache • Shoulder-girdle discomfort • Reduced cervical movement • Muscle tenderness A cervical fracture or spinal-cord injury must be excluded when the mechanism, history, or examination is concerning.
Question 2 of 4NPLEX-PM-082

Which finding would most strongly indicate imaging and urgent medical assessment?

Answer and Clinical Rationale

Correct answer: C. Midline cervical tenderness with upper-extremity weakness
Explanation Midline cervical tenderness and neurologic dysfunction raise concern for fracture, instability, nerve-root injury, or spinal-cord involvement. Other concerning findings include: • Altered consciousness • High-risk trauma • Progressive weakness or sensory loss • Hyperreflexia or gait dysfunction • Severe unremitting pain • Loss of bowel or bladder control
Question 3 of 4NPLEX-PM-083

What is the most appropriate initial physical medicine approach?

Answer and Clinical Rationale

Correct answer: B. Education, reassurance, gentle movement, and gradual return to normal activity
Explanation For an uncomplicated whiplash injury, treatment generally emphasizes: • Reassurance • Avoidance of unnecessary immobilization • Pain-limited cervical movement • Gradual restoration of normal activity • Postural and scapular exercise • Monitoring for delayed neurologic symptoms A soft collar may occasionally be used briefly for symptom control, but prolonged immobilization can increase stiffness, fear, and deconditioning.
Question 4 of 4NPLEX-PM-084

Which situation is a contraindication to cervical manipulation?

Answer and Clinical Rationale

Correct answer: C. Suspected cervical instability or fracture
Explanation Manipulation must not be performed when fracture, instability, spinal-cord compression, vascular pathology, severe osteoporosis, infection, or malignancy is suspected.
Diagnosis: Uncomplicated whiplash-associated disorder Differential diagnosis: Cervical fracture, radiculopathy, concussion, myelopathy, vascular injury Assessment: Mechanism, midline tenderness, neurologic examination, gait, cognition, red flags Treatment: Education, gentle mobility, graded activity, progressive exercise Manual therapy: Consider only after contraindications have been excluded NPLEX trap: Pain after a collision does not automatically justify immediate manipulation.
22

Anterior Shoulder Instability

4 questions · Physical Medicine

Clinical Case
A 22-year-old volleyball player previously dislocated the right shoulder while diving for a ball. Since the injury, the patient experiences apprehension when the arm is placed in abduction and external rotation. Examination reveals: • Full resting shoulder motion • Apprehension with the shoulder abducted to 90° and externally rotated • Mild weakness of the rotator cuff • No current deformity • Normal radial pulse • Normal sensation over the lateral shoulder
Question 1 of 4NPLEX-PM-085

What is the most likely diagnosis?

Answer and Clinical Rationale

Correct answer: A. Recurrent anterior shoulder instability
Explanation Anterior shoulder instability commonly occurs when the arm is forced into abduction and external rotation. Patients may report fear or apprehension rather than pain when the shoulder is placed in the vulnerable position.
Question 2 of 4NPLEX-PM-086

Which test is most appropriate for this condition?

Answer and Clinical Rationale

Correct answer: A. Anterior apprehension test
Explanation The anterior apprehension test places the shoulder in abduction and external rotation. A positive test produces apprehension that the shoulder will dislocate. Pain alone is less specific and may represent rotator-cuff, labral, or impingement-related pathology.
Question 3 of 4NPLEX-PM-087

Which rehabilitation program is most appropriate?

Answer and Clinical Rationale

Correct answer: A. Progressive rotator-cuff, scapular-stabilizer, and proprioceptive training
Explanation Rehabilitation should improve dynamic stabilization of the glenohumeral joint through: • Rotator-cuff strengthening • Scapular control • Closed-chain stabilization • Proprioceptive exercise • Gradual overhead loading • Sport-specific progression The vulnerable position of combined abduction and external rotation is initially restricted and later reintroduced gradually.
Question 4 of 4NPLEX-PM-088

Which structure should be specifically assessed after an anterior shoulder dislocation?

Answer and Clinical Rationale

Correct answer: A. Axillary nerve
Explanation The axillary nerve may be injured during anterior shoulder dislocation. Assessment includes: • Sensation over the lateral shoulder • Deltoid muscle activation • Shoulder abduction strength • Distal pulses and capillary refill
Diagnosis: Recurrent anterior shoulder instability Possible associated injuries: Bankart lesion, Hill-Sachs lesion, rotator-cuff injury, axillary-nerve injury Key test: Anterior apprehension test Treatment: Dynamic stabilization, proprioception, graded return to overhead activity Referral: Recurrent dislocations, major bone loss, persistent instability, neurologic deficit NPLEX trap: Do not force the shoulder farther into the apprehension position.
23

Long-Head Biceps Tendinopathy

4 questions · Physical Medicine

Clinical Case
A 44-year-old construction worker reports gradual anterior shoulder pain aggravated by lifting materials overhead and carrying objects with the palm facing upward. Examination reveals: • Tenderness in the bicipital groove • Pain with resisted shoulder flexion • Pain with resisted forearm supination • Positive Speed and Yergason tests • Full passive shoulder motion • No visible arm deformity
Question 1 of 4NPLEX-PM-089

What is the most likely diagnosis?

Answer and Clinical Rationale

Correct answer: A. Long-head biceps tendinopathy
Explanation Anterior shoulder pain localized to the bicipital groove and reproduced with resisted shoulder flexion or supination supports long-head biceps tendon pathology. Biceps tendinopathy frequently coexists with: • Rotator-cuff disease • Subacromial pain • Labral pathology • Glenohumeral instability
Question 2 of 4NPLEX-PM-090

Which test stresses the long-head biceps tendon through resisted shoulder flexion?

Answer and Clinical Rationale

Correct answer: A. Speed test
Explanation During the Speed test, the patient resists shoulder flexion with the elbow extended and forearm supinated. Reproduction of anterior shoulder pain may support biceps tendon involvement. The test should be interpreted with other findings because it is not independently diagnostic.
Question 3 of 4NPLEX-PM-091

What is the most appropriate initial treatment?

Answer and Clinical Rationale

Correct answer: A. Temporary load modification and progressive shoulder and biceps strengthening
Explanation Treatment may include: • Reduction of aggravating overhead loading • Isometric biceps activation • Progressive resisted elbow flexion and supination • Rotator-cuff strengthening • Scapular stabilization • Correction of occupational mechanics • Gradual return to lifting
Question 4 of 4NPLEX-PM-092

Which finding suggests rupture of the long-head biceps tendon?

Answer and Clinical Rationale

Correct answer: B. Sudden bruising with a distal “Popeye” muscle deformity
Explanation Proximal long-head biceps rupture may produce: • Sudden pain or tearing sensation • Bruising • A bulging distal biceps muscle • Weakness of supination • Reduction of previously severe tendon pain
Diagnosis: Long-head biceps tendinopathy Key tests: Speed and Yergason tests Differential diagnosis: Rotator-cuff disease, SLAP lesion, glenohumeral arthritis, cervical radiculopathy Treatment: Load modification, graded strengthening, scapular and cuff rehabilitation Referral: Acute traumatic rupture, marked weakness, persistent severe dysfunction NPLEX trap: A positive Speed test does not exclude associated rotator-cuff or labral disease.
24

Cubital Tunnel Syndrome

4 questions · Physical Medicine

Clinical Case
A 53-year-old delivery driver reports intermittent numbness and tingling in the left small finger and ulnar half of the ring finger. Symptoms worsen while driving with the elbow flexed and while sleeping. Examination reveals: • Positive Tinel sign over the cubital tunnel • Symptoms reproduced by prolonged elbow flexion • Mild weakness of finger abduction • Normal thumb, index, and middle-finger sensation • No major neck pain
Question 1 of 4NPLEX-PM-093

What is the most likely diagnosis?

Answer and Clinical Rationale

Correct answer: A. Cubital tunnel syndrome
Explanation Cubital tunnel syndrome involves compression or irritation of the ulnar nerve at the elbow. Typical symptoms include: • Paresthesia in the small finger • Paresthesia in the ulnar half of the ring finger • Symptoms with prolonged elbow flexion • Reduced grip or finger-abduction strength • Possible intrinsic hand-muscle wasting in advanced cases
Question 2 of 4NPLEX-PM-094

Which nerve is involved?

Answer and Clinical Rationale

Correct answer: C. Ulnar nerve
Explanation The ulnar nerve travels through the cubital tunnel posterior to the medial epicondyle. Sustained elbow flexion increases pressure and stretch on the nerve.
Question 3 of 4NPLEX-PM-095

What is the most appropriate initial intervention?

Answer and Clinical Rationale

Correct answer: A. Avoid prolonged elbow flexion and direct pressure, particularly during sleep
Explanation Initial management may include: • Avoiding leaning on the elbow • Modifying driving and desk posture • Using a nighttime elbow-extension support • Gentle nerve mobility when appropriate • Monitoring intrinsic hand strength • Addressing occupational repetition
Question 4 of 4NPLEX-PM-096

Which finding requires prompt referral?

Answer and Clinical Rationale

Correct answer: C. Progressive intrinsic hand-muscle atrophy and clawing
Explanation Muscle wasting, persistent weakness, clawing, or severe sensory loss indicates significant ulnar-nerve dysfunction and warrants prompt evaluation.
Diagnosis: Cubital tunnel syndrome Differential diagnosis: C8–T1 radiculopathy, thoracic outlet syndrome, ulnar compression at the wrist Key tests: Tinel at the elbow, sustained elbow-flexion testing, intrinsic hand strength Treatment: Position modification, night support, ergonomics, selected neural mobility NPLEX trap: Ulnar neuropathy affects the small finger; carpal tunnel syndrome generally does not.
25

Acute Hamstring Strain

4 questions · Physical Medicine

Clinical Case
A 27-year-old sprinter develops sudden posterior-thigh pain while accelerating. The athlete stops immediately and has difficulty running but can walk with a mild limp. Examination reveals: • Local tenderness in the middle posterior thigh • Pain with resisted knee flexion • Pain with passive hip flexion and knee extension • No major bruising • No palpable defect • Normal neurologic examination
Question 1 of 4NPLEX-PM-097

What is the most likely diagnosis?

Answer and Clinical Rationale

Correct answer: A. Hamstring strain
Explanation A sudden posterior-thigh injury during sprinting, with pain during hamstring contraction and stretch, is characteristic of a hamstring strain. A mild limp without a palpable defect or major bruising suggests a low- or moderate-grade injury rather than complete rupture.
Question 2 of 4NPLEX-PM-098

Which action most strongly activates the injured muscle group?

Answer and Clinical Rationale

Correct answer: A. Resisted knee flexion
Explanation The hamstrings primarily perform: • Knee flexion • Hip extension • Control of terminal knee extension during running Pain during resisted knee flexion supports injury to the hamstring muscle-tendon unit.
Question 3 of 4NPLEX-PM-099

What is the most appropriate early rehabilitation strategy?

Answer and Clinical Rationale

Correct answer: A. Protect the injury and begin pain-limited isometric activation followed by progressive loading
Explanation Rehabilitation generally progresses through: 1. Protection from high-speed running 2. Pain-limited range of motion 3. Isometric hamstring activation 4. Progressive concentric and eccentric strengthening 5. Running mechanics 6. Acceleration and sprint progression 7. Sport-specific drills Aggressive early stretching can increase pain and tissue disruption.
Question 4 of 4NPLEX-PM-100

Which finding raises concern for a proximal hamstring avulsion?

Answer and Clinical Rationale

Correct answer: B. Severe buttock pain, extensive bruising, and weakness after forced hip flexion
Explanation Proximal hamstring avulsion may occur when the hip is forcefully flexed while the knee is extended. Findings may include: • Severe pain near the ischial tuberosity • Extensive bruising • Palpable defect • Significant weakness • Difficulty sitting or walking
Diagnosis: Acute hamstring strain Differential diagnosis: Lumbar radiculopathy, proximal tendon avulsion, adductor strain, posterior-thigh contusion Treatment: Progressive loading, especially later eccentric strengthening Return to sport: Pain-free function, restored strength, full-speed running tolerance, no apprehension NPLEX trap: Pain relief alone is not sufficient for return to sprinting.
26

Medial Collateral Ligament Sprain

4 questions · Physical Medicine

Clinical Case
A 20-year-old football player is struck on the lateral side of the right knee. The knee collapses inward. The patient reports medial knee pain but no audible pop. Examination reveals: • Tenderness along the medial collateral ligament • Pain with valgus stress at 30° of knee flexion • Mild increased medial opening with a firm endpoint • Negative Lachman test • No major effusion • Intact neurovascular status
Question 1 of 4NPLEX-PM-101

Which structure is most likely injured?

Answer and Clinical Rationale

Correct answer: A. Medial collateral ligament
Explanation A force applied to the lateral knee creates valgus stress and may injure the medial collateral ligament. Localized medial tenderness and pain or laxity with valgus testing support the diagnosis.
Question 2 of 4NPLEX-PM-102

Why is valgus stress commonly tested at approximately 30° of knee flexion?

Answer and Clinical Rationale

Correct answer: A. To better isolate the medial collateral ligament
Explanation At approximately 30° of flexion, other stabilizing structures are relatively relaxed, allowing better assessment of the MCL. Valgus laxity in full extension may indicate a more extensive injury involving additional capsular or cruciate structures.
Question 3 of 4NPLEX-PM-103

What is the most appropriate management for an uncomplicated mild-to-moderate MCL sprain?

Answer and Clinical Rationale

Correct answer: A. Protected weight-bearing, possible hinged bracing, early motion, and progressive strengthening
Explanation Rehabilitation may include: • Protection from valgus stress • Compression and symptom control • Early restoration of range of motion • Quadriceps and hamstring activation • Progressive weight-bearing • Balance and agility training • Gradual return to sport Many isolated MCL injuries heal successfully without surgery.
Question 4 of 4NPLEX-PM-104

Which finding suggests a more extensive knee injury?

Answer and Clinical Rationale

Correct answer: C. Marked valgus laxity in full extension
Explanation Laxity in full extension suggests injury beyond the superficial MCL, potentially involving: • Joint capsule • Cruciate ligaments • Posteromedial structures • Multiple ligament complexes
Diagnosis: MCL sprain Mechanism: Valgus force to the knee Key test: Valgus stress at 30° and full extension Treatment: Protection, early motion, progressive strengthening, functional rehabilitation Referral: Gross instability, multiligament injury, neurovascular findings, suspected fracture NPLEX trap: Valgus laxity in full extension is more concerning than isolated laxity at 30°.
27

Syndesmotic “High Ankle” Sprain

4 questions · Physical Medicine

Clinical Case
A 25-year-old hockey player’s foot is forced into external rotation while the leg remains planted. The patient reports pain above the ankle joint and has greater difficulty walking than expected from the amount of swelling. Examination reveals: • Tenderness over the distal tibiofibular syndesmosis • Pain with external rotation of the foot • Pain when the tibia and fibula are compressed higher in the leg • Minimal tenderness over the anterior talofibular ligament • No gross deformity
Question 1 of 4NPLEX-PM-105

What is the most likely diagnosis?

Answer and Clinical Rationale

Correct answer: A. Syndesmotic ankle sprain
Explanation A high ankle sprain involves the distal tibiofibular syndesmosis. It often results from external rotation of the foot relative to the leg. Pain is usually located above the ankle joint and recovery may be longer than for a typical lateral ankle sprain.
Question 2 of 4NPLEX-PM-106

Which finding supports syndesmotic injury?

Answer and Clinical Rationale

Correct answer: A. Pain during external rotation stress
Explanation External rotation stress separates the distal tibia and fibula and places tension on the syndesmotic ligaments. The squeeze test may also reproduce distal syndesmotic pain when the tibia and fibula are compressed higher in the leg.
Question 3 of 4NPLEX-PM-107

What is the most appropriate initial management?

Answer and Clinical Rationale

Correct answer: A. Protect the ankle, limit painful loading, and evaluate the stability of the syndesmosis
Explanation Management may include: • Protected weight-bearing • Immobilization or bracing when necessary • Imaging when instability or fracture is suspected • Gradual range-of-motion restoration • Strength and balance rehabilitation • Progressive return to skating or running An unstable syndesmotic injury may require orthopedic management.
Question 4 of 4NPLEX-PM-108

Which finding most strongly indicates imaging and orthopedic assessment?

Answer and Clinical Rationale

Correct answer: B. Inability to bear weight with widening of the ankle mortise
Explanation Widening of the ankle mortise suggests syndesmotic instability. Unstable high ankle sprains can lead to chronic pain and degenerative joint changes if inadequately treated.
Diagnosis: Syndesmotic ankle sprain Mechanism: External rotation, often with dorsiflexion Key tests: External-rotation stress and squeeze testing Treatment: Protection, stability assessment, gradual rehabilitation Referral: Mortise widening, fracture, gross instability, inability to progress NPLEX trap: A high ankle sprain may have relatively little swelling but substantial functional disability.
28

Morton Neuroma

4 questions · Physical Medicine

Clinical Case
A 46-year-old woman reports burning forefoot pain and numbness extending into the third and fourth toes. Symptoms are worse when wearing narrow high-heeled shoes and improve after removing the shoes and massaging the foot. Examination reveals: • Tenderness in the third intermetatarsal space • Reproduction of symptoms with forefoot compression • A palpable click during metatarsal squeeze testing • Normal ankle strength • No heel tenderness
Question 1 of 4NPLEX-PM-109

What is the most likely diagnosis?

Answer and Clinical Rationale

Correct answer: A. Morton neuroma
Explanation Morton neuroma is a painful interdigital nerve disorder, most commonly affecting the third intermetatarsal space. Symptoms may include: • Burning forefoot pain • Toe numbness or tingling • Sensation of a pebble in the shoe • Worsening in narrow footwear • Relief after shoe removal
Question 2 of 4NPLEX-PM-110

Which orthopedic maneuver supports the diagnosis?

Answer and Clinical Rationale

Correct answer: A. Morton metatarsal squeeze test
Explanation Compression of the metatarsal heads may reproduce pain or produce a palpable click when the involved nerve is compressed between the metatarsals.
Question 3 of 4NPLEX-PM-111

What is the most appropriate initial management?

Answer and Clinical Rationale

Correct answer: A. Wide toe-box footwear and a properly positioned metatarsal pad
Explanation Conservative management may include: • Wider footwear • Lower heels • Metatarsal pad placed proximal to the painful metatarsal heads • Reduction of repetitive forefoot loading • Foot intrinsic strengthening • Calf and ankle mobility work when relevant
Question 4 of 4NPLEX-PM-112

Which finding suggests a metatarsal stress fracture rather than Morton neuroma?

Answer and Clinical Rationale

Correct answer: C. Focal bony tenderness with pain during hopping after a sudden increase in running
Explanation Stress fracture is more likely with: • Focal metatarsal bone tenderness • Progressive load-related pain • Recent increase in training • Pain during hopping • Possible swelling
Diagnosis: Morton neuroma Differential diagnosis: Metatarsal stress fracture, metatarsalgia, MTP synovitis, peripheral neuropathy Key test: Metatarsal squeeze Treatment: Footwear change, metatarsal support, load modification Referral: Persistent disabling pain, progressive neurologic symptoms, suspected fracture NPLEX trap: Place a metatarsal pad behind—not directly underneath—the painful metatarsal heads.
29

Adolescent Idiopathic Scoliosis

4 questions · Physical Medicine

Clinical Case
A 14-year-old girl is noted to have uneven shoulders during a routine examination. She has no significant pain, weakness, numbness, or bowel or bladder symptoms. Examination reveals: • Right thoracic prominence during forward bending • Mild asymmetry of the waist • Normal strength, sensation, and reflexes • No cutaneous spinal abnormalities • Normal gait
Question 1 of 4NPLEX-PM-113

What is the most likely diagnosis?

Answer and Clinical Rationale

Correct answer: A. Adolescent idiopathic scoliosis
Explanation Adolescent idiopathic scoliosis is a structural lateral curvature of the spine with vertebral rotation that develops without an identifiable underlying cause. It is often detected through: • Shoulder asymmetry • Uneven waist • Rib prominence • Trunk shift • Forward-bend examination
Question 2 of 4NPLEX-PM-114

Which screening examination is most appropriate?

Answer and Clinical Rationale

Correct answer: A. Adam forward-bend test
Explanation During the Adam forward-bend test, the examiner observes for rib or lumbar prominence caused by vertebral rotation. A scoliometer may be used to quantify trunk rotation and determine whether radiographic evaluation is indicated.
Question 3 of 4NPLEX-PM-115

How is the spinal curve measured radiographically?

Answer and Clinical Rationale

Correct answer: A. Cobb angle
Explanation The Cobb angle is measured on a standing spinal radiograph using the most tilted vertebrae above and below the curve. Management depends on: • Curve magnitude • Skeletal maturity • Curve progression • Symptoms • Underlying cause
Question 4 of 4NPLEX-PM-116

Which finding is atypical and requires further investigation?

Answer and Clinical Rationale

Correct answer: C. Significant night pain with neurologic abnormalities
Explanation Pain, neurologic deficits, rapid progression, very young age, or an unusual curve pattern may suggest an underlying disorder such as: • Spinal-cord lesion • Tumor • Infection • Congenital abnormality • Neuromuscular disease
Diagnosis: Adolescent idiopathic scoliosis Key test: Adam forward-bend test Confirmation: Standing spinal radiography and Cobb-angle measurement when indicated Management: Observation, exercise support, bracing, or surgical referral depending on severity and progression Exercise: Supports strength and function but does not replace bracing or specialist care when indicated NPLEX trap: Postural asymmetry does not automatically establish structural scoliosis.
30

Physical-Modality and Hydrotherapy Safety

4 questions · Physical Medicine

Clinical Case
A 68-year-old man with knee osteoarthritis requests heat, TENS, and therapeutic ultrasound. His history includes: • Type 2 diabetes • Reduced temperature and light-touch sensation below both knees • Peripheral arterial disease • Implanted cardiac pacemaker • No acute knee trauma • No fever or joint redness
Question 1 of 4NPLEX-PM-117

What should be done before applying a thermal or electrical modality?

Answer and Clinical Rationale

Correct answer: A. Assess sensation, circulation, skin condition, medical devices, and treatment contraindications
Explanation Before applying a physical modality, the practitioner should evaluate: • Sensation • Circulation • Skin integrity • Cognitive and communication ability • Implanted electronic devices • Active infection • Thrombosis • Malignancy • Acute bleeding • Treatment goals
Question 2 of 4NPLEX-PM-118

Which treatment creates the greatest burn risk for this patient?

Answer and Clinical Rationale

Correct answer: A. Unattended high-temperature heating pad over an area with reduced sensation
Explanation Impaired sensation prevents the patient from reliably detecting excessive heat. Peripheral arterial disease may further reduce the tissue’s ability to tolerate thermal stress. Heat should be avoided or applied only with substantial caution, close monitoring, conservative temperature, and an appropriate protective barrier.
Question 3 of 4NPLEX-PM-119

Which statement about TENS is most appropriate?

Answer and Clinical Rationale

Correct answer: C. Avoid electrical stimulation near the pacemaker unless appropriate medical-device guidance has confirmed safety
Explanation Electrical stimulation may interfere with some implanted electronic devices. Treatment location, device type, manufacturer guidance, and specialist recommendations must be considered. TENS is a symptom-management adjunct; it does not reverse structural osteoarthritis.
Question 4 of 4NPLEX-PM-120

What should form the foundation of this patient’s long-term knee management?

Answer and Clinical Rationale

Correct answer: A. Progressive therapeutic exercise and functional rehabilitation
Explanation The foundation of physical management should include: • Quadriceps and hip strengthening • Comfortable range-of-motion exercise • Low-impact aerobic activity • Balance and gait training • Weight-management support when relevant • Appropriate footwear or assistive device • Activity pacing Modalities may provide temporary symptom relief, but they should not replace active rehabilitation.
Condition: Knee osteoarthritis with major modality precautions Heat precautions: Impaired sensation, vascular disease, inability to report discomfort Electrical precautions: Pacemaker and other implanted electronic devices Ultrasound precautions: Avoid over active malignancy, thrombosis, acute infection, eyes, reproductive organs, and other contraindicated tissues Hydrotherapy: Use safe temperatures and direct supervision; avoid extremes when circulation or sensation is impaired NPLEX trap: The presence of pain is not enough to justify a modality. Safety screening comes first.
31

Full-Thickness Rotator-Cuff Tear

4 questions · Physical Medicine

Clinical Case
A 63-year-old man falls onto his outstretched right hand. He develops immediate shoulder pain and is unable to lift the arm above shoulder level. Examination reveals: • Markedly reduced active abduction • Nearly preserved passive shoulder motion • Significant weakness during resisted abduction • Positive drop-arm test • No shoulder deformity • Normal distal pulses • Normal sensation over the lateral shoulder
Question 1 of 4NPLEX-PM-121

What is the most likely diagnosis?

Answer and Clinical Rationale

Correct answer: B. Full-thickness rotator-cuff tear
Explanation A traumatic onset, major loss of active elevation, preserved passive motion, objective weakness, and a positive drop-arm test strongly suggest a substantial rotator-cuff tear. Rotator-cuff tears commonly cause pain when lifting or lowering the arm, weakness during elevation or rotation, night pain, and sometimes crepitus. • A: Adhesive capsulitis restricts both active and passive movement. • C: Cervical myelopathy produces spinal-cord signs, such as hyperreflexia and gait disturbance. • D: AC arthritis usually causes localized superior shoulder pain, especially during cross-body movement. • E: Carpal tunnel syndrome affects the median nerve at the wrist.
Question 2 of 4NPLEX-PM-122

Which orthopedic test is most appropriate for assessing a major supraspinatus or rotator-cuff tear?

Answer and Clinical Rationale

Correct answer: A. Drop-arm test
Explanation The examiner passively abducts the shoulder and asks the patient to lower the arm slowly. Sudden dropping of the arm or inability to control the descent suggests significant rotator-cuff dysfunction. Pain alone is less specific than true weakness or loss of controlled lowering.
Question 3 of 4NPLEX-PM-123

What is the most appropriate next step?

Answer and Clinical Rationale

Correct answer: B. Arrange appropriate shoulder imaging and orthopedic assessment
Explanation Acute traumatic weakness in an older adult requires assessment for a full-thickness tear, occult fracture, dislocation, or neurologic injury. Ultrasound or MRI can evaluate tendon integrity when the result will affect treatment. Physical therapy can improve patient-reported outcomes in some symptomatic full-thickness tears, but acute traumatic tears with major weakness warrant timely specialist evaluation.
Question 4 of 4NPLEX-PM-124

Which exercise is most appropriate while awaiting definitive assessment, assuming no fracture or dislocation?

Answer and Clinical Rationale

Correct answer: C. Gentle pain-limited pendulum movement and protected range of motion
Explanation Gentle protected movement may help limit unnecessary stiffness while avoiding excessive stress on the injured tendon. Strengthening should be prescribed only after the diagnosis, tear severity, pain level, and treatment plan are established.
Diagnosis: Traumatic full-thickness rotator-cuff tear Key examination: Active versus passive motion, drop-arm test, resisted abduction and external rotation Differential diagnosis: Fracture, dislocation, axillary neuropathy, cervical radiculopathy, adhesive capsulitis Investigations: Radiography after trauma; ultrasound or MRI for tendon evaluation Treatment: Protection, pain control, appropriate imaging, specialist assessment, structured rehabilitation NPLEX trap: Preserved passive motion with severe active weakness suggests tendon or neurologic dysfunction rather than adhesive capsulitis.
32

Acromioclavicular Joint Sprain

4 questions · Physical Medicine

Clinical Case
A 28-year-old cyclist falls directly onto the superior aspect of the left shoulder. The patient develops localized pain and swelling over the top of the shoulder. Examination reveals: • Tenderness over the acromioclavicular joint • Pain during cross-body adduction • Mild visible prominence of the distal clavicle • Full elbow and wrist function • Normal axillary-nerve sensation • Intact distal circulation
Question 1 of 4NPLEX-PM-125

Which structure is most likely injured?

Answer and Clinical Rationale

Correct answer: A. Acromioclavicular joint
Explanation A shoulder separation involves the AC joint, where the distal clavicle meets the acromion. It commonly follows a direct fall onto the shoulder. The injury is distinct from a glenohumeral dislocation.
Question 2 of 4NPLEX-PM-126

Which movement is most likely to reproduce AC-joint pain?

Answer and Clinical Rationale

Correct answer: A. Cross-body shoulder adduction
Explanation Cross-body adduction compresses the acromioclavicular joint and commonly reproduces localized superior shoulder pain. The location of pain is important. Deep anterior or lateral shoulder pain may suggest other shoulder pathology.
Question 3 of 4NPLEX-PM-127

What is the most appropriate initial management of a stable, low-grade AC sprain?

Answer and Clinical Rationale

Correct answer: A. Brief sling use for comfort, symptom control, early protected motion, and progressive rehabilitation
Explanation Management usually includes: • Short-term protection • Ice or another appropriate symptom-control method • Brief sling use if needed • Early elbow, wrist, and hand movement • Gradual shoulder range of motion • Scapular and shoulder strengthening • Progressive return to work or sport Most lower-grade AC-joint injuries are treated nonsurgically.
Question 4 of 4NPLEX-PM-128

Which finding requires evaluation for a more serious injury?

Answer and Clinical Rationale

Correct answer: C. Absent distal pulse with a cool, pale arm
Explanation A cool, pale extremity or absent pulse suggests vascular compromise. Immediate emergency assessment is required. Other serious findings include: • Severe deformity • Open injury • Neurologic loss • Suspected clavicular fracture • Skin tenting • Chest pain or respiratory symptoms
Diagnosis: Acromioclavicular joint sprain Mechanism: Direct impact onto the shoulder Key examination: AC tenderness, cross-body adduction, deformity, neurovascular status Treatment: Protection, early movement, scapular and shoulder rehabilitation Referral: Severe displacement, skin compromise, neurovascular dysfunction, associated fracture NPLEX trap: A shoulder separation affects the AC joint, not the main glenohumeral ball-and-socket joint.
33

Posterior Cruciate Ligament Injury

4 questions · Physical Medicine

Clinical Case
A 36-year-old driver is involved in a motor-vehicle collision. The front of the flexed right knee strikes the dashboard. Examination reveals: • Posterior knee pain • Mild effusion • Increased posterior translation of the tibia • Positive posterior drawer test • Negative Lachman test • Intact distal pulses and sensation
Question 1 of 4NPLEX-PM-129

Which ligament is most likely injured?

Answer and Clinical Rationale

Correct answer: B. Posterior cruciate ligament
Explanation A direct force against the anterior tibia while the knee is flexed is a classic mechanism for posterior cruciate ligament injury. Dashboard trauma and falling onto a flexed knee are commonly described mechanisms.
Question 2 of 4NPLEX-PM-130

Which test best assesses the suspected ligament?

Answer and Clinical Rationale

Correct answer: A. Posterior drawer test
Explanation The posterior drawer test assesses posterior displacement of the tibia relative to the femur. The examiner should also observe for a posterior sag of the tibia before performing the test.
Question 3 of 4NPLEX-PM-131

Which early rehabilitation approach is most appropriate for an isolated stable PCL injury?

Answer and Clinical Rationale

Correct answer: A. Quadriceps activation, protected weight-bearing, and avoidance of excessive posterior tibial translation
Explanation Initial rehabilitation commonly emphasizes: • Swelling control • Restoration of appropriate range of motion • Quadriceps activation • Protected weight-bearing • Gradual closed-chain strengthening • Avoidance of early exercises that create excessive posterior tibial shear Hamstring contraction can increase posterior translation of the tibia and may need to be progressed cautiously during early rehabilitation.
Question 4 of 4NPLEX-PM-132

Which finding would suggest a multiligament knee injury requiring urgent assessment?

Answer and Clinical Rationale

Correct answer: C. Gross instability with a diminished foot pulse
Explanation High-energy multiligament knee injuries can damage the popliteal artery and peripheral nerves. Neurovascular findings require immediate emergency evaluation.
Diagnosis: Posterior cruciate ligament injury Mechanism: Dashboard trauma or fall onto a flexed knee Key tests: Posterior drawer and posterior sag assessment Differential diagnosis: Tibial plateau fracture, meniscal injury, posterolateral-corner injury Treatment: Protection, quadriceps-focused rehabilitation, progressive functional loading Referral: Neurovascular deficit, major instability, combined ligament injury, fracture NPLEX trap: Anterior tibial translation indicates ACL injury; posterior translation indicates PCL injury.
34

Lateral Collateral Ligament Injury

4 questions · Physical Medicine

Clinical Case
A 30-year-old rugby player is struck on the medial aspect of the left knee, forcing the knee outward. Examination reveals: • Lateral joint-line and fibular-head tenderness • Pain and laxity with varus stress at 30° • Mild instability • Negative valgus stress testing • Normal ankle dorsiflexion and eversion • Intact sensation over the dorsum of the foot
Question 1 of 4NPLEX-PM-133

Which ligament is most likely injured?

Answer and Clinical Rationale

Correct answer: B. Lateral collateral ligament
Explanation A blow to the medial knee produces varus stress and can injure the lateral collateral ligament. The LCL is located on the outer side of the knee and connects the femur to the fibula.
Question 2 of 4NPLEX-PM-134

Which orthopedic test is most appropriate?

Answer and Clinical Rationale

Correct answer: A. Varus stress test
Explanation Varus stress evaluates the lateral stabilizing structures of the knee. Testing at approximately 30° helps assess the LCL more specifically. Laxity in full extension suggests a more extensive capsular, cruciate, or posterolateral-corner injury.
Question 3 of 4NPLEX-PM-135

Which nerve should be carefully evaluated in a substantial lateral knee injury?

Answer and Clinical Rationale

Correct answer: A. Common peroneal nerve
Explanation The common peroneal nerve passes around the fibular neck and may be injured with trauma involving the lateral knee. Assessment includes: • Ankle dorsiflexion • Great-toe extension • Foot eversion • Sensation over the dorsum of the foot • Gait assessment for foot drop
Question 4 of 4NPLEX-PM-136

What is the most appropriate treatment for a mild isolated LCL sprain?

Answer and Clinical Rationale

Correct answer: A. Protection from varus stress, progressive motion, strengthening, and balance rehabilitation
Explanation A mild isolated injury may be treated with: • Protection or bracing • Swelling control • Progressive range of motion • Quadriceps and hamstring strengthening • Hip strengthening • Balance and neuromuscular training • Gradual return to cutting and contact activity LCL injuries are less commonly isolated than MCL injuries and should be assessed for associated posterolateral and cruciate damage.
Diagnosis: Lateral collateral ligament sprain Mechanism: Varus force applied to the knee Key test: Varus stress at 30° and full extension Neurologic concern: Common peroneal nerve Treatment: Protection, motion, strengthening, neuromuscular rehabilitation NPLEX trap: Severe lateral instability may indicate a posterolateral-corner or multiligament injury rather than an isolated LCL sprain.
35

Midportion Achilles Tendinopathy

4 questions · Physical Medicine

Clinical Case
A 43-year-old recreational runner reports gradual pain and stiffness approximately 4 cm above the right heel. Symptoms are worse during the first few minutes of running and the morning after training. Examination reveals: • Localized thickening of the Achilles tendon • Tenderness 3–5 cm proximal to the calcaneal insertion • Pain during repeated heel raises • Preserved plantar-flexion strength • Negative Thompson test • No sudden traumatic event
Question 1 of 4NPLEX-PM-137

What is the most likely diagnosis?

Answer and Clinical Rationale

Correct answer: A. Midportion Achilles tendinopathy
Explanation Gradual load-related tendon pain, morning stiffness, tendon thickening, and preserved continuity support Achilles tendinopathy rather than acute rupture. Achilles tendinopathy commonly develops when the tendon becomes irritated after repetitive loading.
Question 2 of 4NPLEX-PM-138

Which finding most strongly argues against a complete Achilles rupture?

Answer and Clinical Rationale

Correct answer: C. Normal plantar flexion during the Thompson test
Explanation An intact plantar-flexion response during calf compression suggests tendon continuity. A complete rupture typically produces absent or markedly reduced plantar flexion during the Thompson test. Clinical findings must still be interpreted together, because partial tears may be more difficult to identify.
Question 3 of 4NPLEX-PM-139

What is the most appropriate rehabilitation plan?

Answer and Clinical Rationale

Correct answer: A. Progressive calf-loading exercise with modification of running load
Explanation Treatment commonly includes: • Temporary reduction of provocative running volume • Isometric calf exercise for initial load tolerance • Progressive heel-raise strengthening • Slow heavy or eccentric loading as tolerated • Foot, ankle, hip, and kinetic-chain assessment • Gradual return to running • Monitoring of next-day symptoms Foot and ankle conditioning programs emphasize progressive strengthening of the plantar flexors and other supporting muscles.
Question 4 of 4NPLEX-PM-140

Which new finding requires prompt assessment for Achilles rupture?

Answer and Clinical Rationale

Correct answer: C. Sudden pop with inability to perform a heel raise
Explanation A sudden pop, immediate functional loss, palpable tendon gap, and abnormal Thompson test suggest an acute rupture.
Diagnosis: Midportion Achilles tendinopathy Differential diagnosis: Partial tear, complete rupture, retrocalcaneal bursitis, posterior ankle impingement Key assessment: Pain location, tendon thickening, heel raises, Thompson test Treatment: Load modification and progressive tendon loading NPLEX trap: Tendinopathy is not treated with indefinite rest; the tendon usually requires carefully progressed loading.
36

Progressive Collapsing Foot Deformity

4 questions · Physical Medicine

Clinical Case
A 59-year-old woman reports progressive pain and swelling behind the medial ankle. Over the past year, the arch of the right foot has become flatter. Examination reveals: • Tenderness along the posterior tibial tendon • Hindfoot valgus • Forefoot abduction • “Too-many-toes” appearance from behind • Difficulty performing a single-leg heel raise • Arch partially corrects during non-weight-bearing examination
Question 1 of 4NPLEX-PM-141

What is the most likely diagnosis?

Answer and Clinical Rationale

Correct answer: A. Progressive collapsing foot deformity due to posterior tibial tendon dysfunction
Explanation Progressive arch collapse, medial ankle pain, hindfoot valgus, forefoot abduction, and difficulty with a single-leg heel raise support posterior tibial tendon dysfunction. This condition was formerly called adult-acquired flatfoot and is now commonly described as progressive collapsing foot deformity.
Question 2 of 4NPLEX-PM-142

What is a primary function of the posterior tibial tendon?

Answer and Clinical Rationale

Correct answer: A. Supporting the medial arch and assisting foot inversion
Explanation The posterior tibial tendon runs behind the medial malleolus and contributes to: • Supporting the medial arch • Inverting the foot • Controlling pronation during gait • Assisting heel rise Loss of tendon function can allow progressive flattening and abduction of the foot.
Question 3 of 4NPLEX-PM-143

What is the most appropriate conservative management while the deformity remains flexible?

Answer and Clinical Rationale

Correct answer: A. Arch-supporting orthosis, appropriate footwear, and progressive posterior tibial and calf rehabilitation
Explanation Conservative treatment may include: • Supportive footwear • An ankle or foot orthosis • Temporary reduction of painful loading • Calf flexibility work • Posterior tibial strengthening • Foot-intrinsic strengthening • Balance and gait rehabilitation • Weight-management support where applicable
Question 4 of 4NPLEX-PM-144

Which finding suggests progression requiring specialist assessment?

Answer and Clinical Rationale

Correct answer: C. Increasing rigid deformity with lateral ankle pain and inability to heel raise
Explanation Progressive rigidity, worsening deformity, lateral impingement pain, severe weakness, or failure of conservative care warrants orthopedic or foot-and-ankle assessment.
Diagnosis: Progressive collapsing foot deformity/posterior tibial tendon dysfunction Key findings: Medial ankle pain, arch collapse, hindfoot valgus, too-many-toes sign, failed heel raise Treatment: Orthotic support, footwear, progressive strengthening and gait rehabilitation Referral: Rigid deformity, rapid progression, severe functional loss, failure of conservative care NPLEX trap: A flexible flatfoot and a rigid progressive collapsing deformity are not managed identically.
37

Adolescent Lumbar Spondylolysis

4 questions · Physical Medicine

Clinical Case
A 16-year-old competitive gymnast reports gradually progressive low-back pain. The pain is worse during backbends, tumbling, and repeated lumbar extension. It improves with rest. Examination reveals: • Localized lower-lumbar tenderness • Pain with lumbar extension • Tight hamstrings • Normal lower-extremity strength and sensation • Normal reflexes • No bowel or bladder symptoms • No fever or constitutional symptoms
Question 1 of 4NPLEX-PM-145

What is the most likely diagnosis?

Answer and Clinical Rationale

Correct answer: A. Lumbar spondylolysis
Explanation Spondylolysis is a stress injury or defect of the pars interarticularis. It is associated with sports involving repetitive lumbar extension and rotation, including gymnastics, football, diving, and weightlifting.
Question 2 of 4NPLEX-PM-146

Which activity should initially be modified?

Answer and Clinical Rationale

Correct answer: A. Repetitive painful lumbar hyperextension
Explanation Repeated painful extension can continue to load the pars region. Initial management should reduce the provocative activity while maintaining general conditioning within safe limits.
Question 3 of 4NPLEX-PM-147

What is the most appropriate initial rehabilitation plan?

Answer and Clinical Rationale

Correct answer: A. Temporary removal from painful extension activity followed by trunk, hip, and movement-control rehabilitation
Explanation Management may include: • Temporary activity modification • Pain-free aerobic conditioning • Trunk endurance and stabilization • Hip and lower-extremity strengthening • Hamstring and hip-flexor mobility • Gradual reintroduction of extension • Sport-specific progression Manipulation directly over a suspected stress fracture is inappropriate until structural injury and stability have been evaluated.
Question 4 of 4NPLEX-PM-148

Which finding requires broader investigation rather than routine sports rehabilitation?

Answer and Clinical Rationale

Correct answer: C. Night pain, fever, weight loss, or neurologic abnormalities
Explanation Constitutional symptoms, persistent night pain, neurologic deficits, bowel or bladder changes, or rapidly progressive symptoms suggest infection, tumor, spinal-cord disease, or another serious condition.
Diagnosis: Lumbar spondylolysis Underlying lesion: Stress injury of the pars interarticularis Risk activities: Repetitive lumbar extension and rotation Investigations: Radiography or advanced imaging when clinically indicated Treatment: Activity modification, trunk and hip rehabilitation, graded return to sport NPLEX trap: Do not perform forceful manipulation over a suspected pars stress fracture.
38

Osteoporotic Vertebral Compression Fracture

4 questions · Physical Medicine

Clinical Case
A 76-year-old woman with known osteoporosis develops sudden mid-thoracic pain after lifting a light grocery bag. She has no major trauma. Examination reveals: • Focal thoracic vertebral tenderness • Increased thoracic kyphosis • Pain with standing and spinal movement • Normal lower-extremity strength • Normal sensation and reflexes • No fever • No bowel or bladder symptoms
Question 1 of 4NPLEX-PM-149

What is the most likely diagnosis?

Answer and Clinical Rationale

Correct answer: A. Osteoporotic vertebral compression fracture
Explanation Osteoporotic vertebrae may fracture during apparently minor activities such as lifting, reaching, twisting, coughing, or sneezing. Compression fractures commonly cause sudden focal spinal pain and may contribute to height loss or kyphosis.
Question 2 of 4NPLEX-PM-150

What is the most appropriate initial investigation?

Answer and Clinical Rationale

Correct answer: A. Thoracic spine imaging
Explanation A new focal pain episode in a patient with osteoporosis warrants imaging to evaluate for vertebral fracture and determine whether the fracture appears stable or has concerning features. Further imaging may be required when malignancy, infection, neurologic compression, or fracture acuity is uncertain. The ACR provides specific imaging pathways for vertebral compression fractures.
Question 3 of 4NPLEX-PM-151

Which treatment is contraindicated before the fracture is appropriately assessed?

Answer and Clinical Rationale

Correct answer: A. High-velocity manipulation over the painful thoracic segment
Explanation Forceful manipulation over a suspected osteoporotic fracture may worsen pain, displacement, or tissue injury. Treatment should focus on appropriate medical assessment, protection, pain management, and safe functional recovery.
Question 4 of 4NPLEX-PM-152

Which long-term intervention is most important after the acute fracture is stabilized?

Answer and Clinical Rationale

Correct answer: A. Bone-health management, fall prevention, and appropriately prescribed strengthening
Explanation Long-term management should address: • Osteoporosis assessment and treatment • Nutrition and medication factors • Fall-risk reduction • Balance exercise • Lower-extremity strengthening • Postural endurance • Safe weight-bearing activity • Avoidance of excessive loaded spinal flexion or twisting in severe osteoporosis Exercise selection must consider fracture history and fall risk.
Diagnosis: Osteoporotic vertebral compression fracture Key findings: Sudden focal pain, vertebral tenderness, osteoporosis risk, kyphosis Investigation: Appropriate spinal imaging Treatment: Medical assessment, pain control, safe mobilization, osteoporosis treatment, rehabilitation Contraindication: Forceful manipulation over a suspected or confirmed fracture NPLEX trap: Minimal trauma does not exclude fracture in a patient with severely weakened bone.
39

Cervical Myofascial Pain

4 questions · Physical Medicine

Clinical Case
A 38-year-old graphic designer reports gradual aching across the neck and upper shoulders after several weeks of prolonged computer work. The pain occasionally refers toward the temple. Examination reveals: • Forward-head posture • Rounded shoulders • Taut, tender bands in the upper trapezius • Familiar referred pain reproduced with pressure • Mildly reduced cervical rotation • Normal strength, sensation, and reflexes • No fever, trauma, or systemic symptoms
Question 1 of 4NPLEX-PM-153

What is the most likely diagnosis?

Answer and Clinical Rationale

Correct answer: A. Cervical myofascial pain
Explanation Myofascial pain commonly presents as regional muscle pain and stiffness associated with tender or hyperirritable points in taut muscle bands. Pressure may reproduce local or referred pain. The normal neurologic examination and absence of systemic red flags make spinal-cord, infectious, and fracture diagnoses less likely.
Question 2 of 4NPLEX-PM-154

What is the most appropriate treatment plan?

Answer and Clinical Rationale

Correct answer: A. Ergonomic modification, movement breaks, mobility work, and progressive postural strengthening
Explanation Management may include: • Workstation modification • Regular movement breaks • Cervical and thoracic mobility • Scapular endurance exercise • Deep-neck-flexor training • Sleep and stress assessment • Gradual aerobic exercise • Short-term soft-tissue treatment The goal is to restore function and reduce the mechanical and behavioural factors maintaining symptoms.
Question 3 of 4NPLEX-PM-155

How should massage or myofascial therapy be used?

Answer and Clinical Rationale

Correct answer: A. As a possible adjunct to active rehabilitation
Explanation Soft-tissue treatment may temporarily reduce pain or muscle guarding. It should generally support an active plan involving movement, strengthening, ergonomics, and self-management. Manual therapy is inappropriate over: • Acute fracture • Active infection • Unexplained mass • Acute thrombosis • Significant bleeding • Severe tissue injury • Areas where pressure may cause harm
Question 4 of 4NPLEX-PM-156

Which new finding would require investigation before continuing manual therapy?

Answer and Clinical Rationale

Correct answer: C. Progressive arm weakness with hyperreflexia and gait disturbance
Explanation Progressive weakness, hyperreflexia, hand clumsiness, gait dysfunction, or bowel or bladder symptoms suggest cervical myelopathy or another central neurologic disorder.
Diagnosis: Cervical myofascial pain Key findings: Taut tender bands, referred pain, postural and occupational aggravation Treatment: Ergonomics, mobility, strengthening, movement breaks, selected manual therapy Referral: Neurologic loss, systemic symptoms, trauma, severe night pain, vascular symptoms NPLEX trap: Trigger-point tenderness does not eliminate the need to screen for serious cervical pathology.
40

Suspected Deep-Vein Thrombosis

4 questions · Physical Medicine

Clinical Case
A 64-year-old man presents requesting massage and heat for a painful swollen left calf. He returned from a 10-hour flight two days ago. Examination reveals: • Unilateral calf swelling • Warmth and tenderness • Left calf circumference 4 cm greater than the right • Mild pitting edema • No history of direct trauma • Heart rate 104/min • Oxygen saturation 97% • No chest pain at present
Question 1 of 4NPLEX-PM-157

What is the most concerning diagnosis?

Answer and Clinical Rationale

Correct answer: A. Deep-vein thrombosis
Explanation Unilateral swelling, warmth, tenderness, edema, recent prolonged immobility, and unexplained tachycardia raise concern for lower-extremity venous thrombosis. A physical examination cannot reliably confirm or exclude DVT. Formal clinical assessment and diagnostic testing are required.
Question 2 of 4NPLEX-PM-158

What is the most appropriate next action?

Answer and Clinical Rationale

Correct answer: A. Arrange urgent medical evaluation
Explanation Suspected DVT requires urgent medical assessment. Treatment may involve diagnostic ultrasound, laboratory testing, anticoagulation, and evaluation for pulmonary embolism. Physical treatment must not delay definitive evaluation.
Question 3 of 4NPLEX-PM-159

Which treatment is contraindicated before DVT has been excluded?

Answer and Clinical Rationale

Correct answer: A. Deep massage and vigorous mechanical treatment of the calf
Explanation Deep massage, vigorous exercise, heat, and certain therapeutic modalities should not be applied over a suspected acute thrombosis. The concern is worsening symptoms, delaying diagnosis, and potentially contributing to embolic complications. The NPLEX Physical Medicine blueprint specifically expects candidates to evaluate the safety and contraindications of manual therapy, hydrotherapy, electrical modalities, ultrasound, compression, and other physical treatments.
Question 4 of 4NPLEX-PM-160

Which new symptom would indicate possible pulmonary embolism and require emergency activation?

Answer and Clinical Rationale

Correct answer: A. Sudden shortness of breath with pleuritic chest pain
Explanation Sudden dyspnea, pleuritic chest pain, hemoptysis, syncope, unexplained hypoxemia, or hemodynamic instability may indicate pulmonary embolism and require emergency care.
Suspected diagnosis: Deep-vein thrombosis Risk factor: Prolonged travel and immobility Key findings: Unilateral swelling, warmth, tenderness, edema Immediate action: Urgent medical evaluation Contraindicated treatment: Deep massage, vigorous exercise, heat, compression, or therapeutic modalities before clearance NPLEX trap: A painful calf is not automatically a muscular strain. Always assess thrombotic risk and asymmetrical swelling.
41

Mechanical Cervical Facet and Postural Pain

4 questions · Physical Medicine

Clinical Case
A 40-year-old accountant reports gradual right-sided neck pain after several weeks of prolonged computer work. The pain remains localized to the lower cervical and upper trapezius region. Examination reveals: • Forward-head posture • Reduced right cervical rotation • Local pain with extension and right rotation • Mild cervical paraspinal tenderness • Normal upper-extremity strength and sensation • Symmetric reflexes • Negative signs of spinal-cord dysfunction • No trauma, fever, or constitutional symptoms
Question 1 of 4NPLEX-PM-161

What is the most likely diagnosis?

Answer and Clinical Rationale

Correct answer: A. Mechanical cervical pain
Explanation The localized neck pain, postural aggravation, restricted movement, paraspinal tenderness, and normal neurologic examination support uncomplicated mechanical cervical pain. • B: Myelopathy produces spinal-cord findings such as hyperreflexia, gait dysfunction, or hand clumsiness. • C: Infection may produce fever, severe unremitting pain, and systemic illness. • D: There is no traumatic mechanism or focal fracture finding. • E: Venous thoracic outlet disease produces arm swelling and vascular changes.
Question 2 of 4NPLEX-PM-162

Which finding would suggest cervical radiculopathy rather than localized mechanical pain?

Answer and Clinical Rationale

Correct answer: C. Dermatomal arm paresthesia with myotomal weakness
Explanation Radiculopathy involves a cervical nerve root and may produce: • Radiating arm pain • Dermatomal sensory loss • Myotomal weakness • Reduced corresponding reflex • Symptoms reproduced by cervical compression Localized muscular or joint pain generally does not produce neurologic deficits.
Question 3 of 4NPLEX-PM-163

What is the most appropriate initial rehabilitation plan?

Answer and Clinical Rationale

Correct answer: A. Ergonomic modification, mobility work, and progressive cervical and scapular strengthening
Explanation A reasonable program includes: • Workstation adjustment • Frequent movement breaks • Pain-limited cervical mobility • Thoracic mobility • Deep-neck-flexor exercise • Scapular retraction and endurance training • Gradual aerobic activity • Education about maintaining normal activity Manual therapy may be used as an adjunct after contraindications have been excluded.
Question 4 of 4NPLEX-PM-164

When may cervical traction be considered?

Answer and Clinical Rationale

Correct answer: A. When carefully selected symptoms improve with distraction and no contraindications are present
Explanation Cervical traction may be considered for selected patients with nerve-root irritation or compressive symptoms that improve with distraction. Traction should be avoided or used only after specialist assessment when there is: • Fracture • Instability • Severe osteoporosis • Spinal-cord compression • Malignancy • Infection • Acute inflammatory disease • Significant vascular pathology
Diagnosis: Mechanical cervical pain Key examination: Posture, active movement, neurologic screening, compression and distraction when indicated Treatment: Ergonomics, mobility, strengthening, education, selected manual therapy NPLEX trap: A normal neurologic examination supports mechanical pain but does not eliminate the need to screen for fracture, infection, malignancy, and vascular disease.
42

Cervical Arterial Dysfunction Red Flag

4 questions · Physical Medicine

Clinical Case
A 61-year-old patient presents with sudden severe upper-neck and occipital pain that began after forcefully rotating the neck. The patient also reports dizziness, double vision, difficulty speaking, and unsteady walking. Examination reveals: • New gait ataxia • Slurred speech • Nystagmus • Nausea • No history of similar mechanical neck pain • Blood pressure of 176/102 mmHg
Question 1 of 4NPLEX-PM-165

What is the most concerning diagnosis?

Answer and Clinical Rationale

Correct answer: A. Cervical arterial dissection or posterior-circulation ischemia
Explanation Sudden unusual neck or occipital pain accompanied by neurologic symptoms raises concern for cervical arterial pathology. Concerning posterior-circulation symptoms include: • Diplopia • Dysarthria • Dysphagia • Ataxia • Nystagmus • Vertigo • Nausea or vomiting • Facial or limb sensory changes • Sudden severe headache
Question 2 of 4NPLEX-PM-166

What is the most appropriate next action?

Answer and Clinical Rationale

Correct answer: A. Activate emergency medical evaluation
Explanation Possible cervical arterial dissection or stroke is a medical emergency. Manual treatment must not delay emergency imaging and neurologic assessment.
Question 3 of 4NPLEX-PM-167

Which treatment is contraindicated?

Answer and Clinical Rationale

Correct answer: A. Cervical manipulation
Explanation Forceful cervical movement may worsen a vascular injury or delay definitive care. Manipulation, traction, massage, and exercise are inappropriate until serious vascular pathology has been excluded.
Question 4 of 4NPLEX-PM-168

Which statement about positional vertebral-artery testing is most accurate?

Answer and Clinical Rationale

Correct answer: A. A negative positional test cannot reliably exclude vascular pathology
Explanation Clinical safety depends on the complete history and examination. A provocative positional test alone cannot reliably establish or exclude cervical arterial disease.
Suspected diagnosis: Cervical arterial dissection or posterior-circulation ischemia Red flags: Sudden unusual neck pain, diplopia, dysarthria, ataxia, nystagmus Immediate action: Emergency assessment Contraindicated treatments: Manipulation, traction, vigorous massage, exercise NPLEX trap: Do not dismiss dizziness and neck pain as a musculoskeletal problem when focal neurologic symptoms are present.
43

Lateral Meniscal Tear and Apley Testing

4 questions · Physical Medicine

Clinical Case
A 37-year-old recreational skier twists the left knee while the foot remains fixed. The patient develops lateral joint-line pain, intermittent swelling, and catching. Examination reveals: • Lateral joint-line tenderness • Pain with deep knee flexion • Pain and clicking during McMurray testing • Pain during Apley compression • Less pain during Apley distraction • Stable Lachman and posterior drawer tests
Question 1 of 4NPLEX-PM-169

What is the most likely diagnosis?

Answer and Clinical Rationale

Correct answer: A. Lateral meniscal tear
Explanation The twisting mechanism, lateral joint-line pain, catching, swelling, and positive meniscal provocation tests support a lateral meniscal tear.
Question 2 of 4NPLEX-PM-170

What does pain during Apley compression suggest?

Answer and Clinical Rationale

Correct answer: A. Meniscal pathology
Explanation During Apley compression, the tibia is compressed toward the femur while being rotated. This stresses the menisci. Reproduction of joint-line pain may support meniscal injury when combined with other clinical findings.
Question 3 of 4NPLEX-PM-171

What does greater pain during Apley distraction than compression suggest?

Answer and Clinical Rationale

Correct answer: A. Collateral ligament or capsular injury
Explanation Apley distraction places greater tension on the collateral ligaments and capsule while reducing meniscal compression. Interpretation: • Compression more painful: Meniscal pathology is more likely. • Distraction more painful: Ligamentous or capsular pathology is more likely.
Question 4 of 4NPLEX-PM-172

Which finding requires prompt orthopedic assessment?

Answer and Clinical Rationale

Correct answer: C. A mechanically locked knee that cannot extend
Explanation A displaced meniscal fragment may mechanically prevent extension. True locking requires prompt evaluation.
Diagnosis: Lateral meniscal tear Key tests: McMurray and Apley compression Differential diagnosis: LCL injury, osteochondral injury, ACL injury, proximal tibiofibular dysfunction Treatment: Swelling control, motion restoration, strengthening, balance and functional rehabilitation NPLEX trap: Apley compression and distraction have different purposes; do not interpret them as identical tests.
44

Patellar Dislocation and Recurrent Instability

4 questions · Physical Medicine

Clinical Case
A 19-year-old dancer reports that the kneecap moved laterally during a twisting movement. It returned to position before arrival. The patient now has medial patellar tenderness and fears that the kneecap will dislocate again. Examination reveals: • Mild knee effusion • Tenderness along the medial patellofemoral region • Positive patellar apprehension test • Increased lateral patellar mobility • Intact extensor mechanism • Normal distal neurovascular examination
Question 1 of 4NPLEX-PM-173

What is the most likely diagnosis?

Answer and Clinical Rationale

Correct answer: A. Lateral patellar dislocation with residual instability
Explanation Lateral patellar displacement is the most common direction of patellar dislocation. After spontaneous reduction, patients may have: • Medial retinacular tenderness • Effusion • Apprehension during lateral patellar movement • Recurrent instability • Difficulty trusting the knee
Question 2 of 4NPLEX-PM-174

Which test is most appropriate?

Answer and Clinical Rationale

Correct answer: A. Patellar apprehension test
Explanation The examiner gently translates the patella laterally. A positive test produces fear, guarding, or apprehension that the patella will dislocate. The test should be performed cautiously after an acute injury.
Question 3 of 4NPLEX-PM-175

Which rehabilitation plan is most appropriate after serious associated injury has been excluded?

Answer and Clinical Rationale

Correct answer: A. Progressive quadriceps, hip, balance, and movement-control training
Explanation Rehabilitation may include: • Swelling control • Restoration of knee motion • Quadriceps activation • Hip-abductor and external-rotator strengthening • Balance and neuromuscular exercise • Landing and lower-extremity alignment training • Temporary bracing or taping when appropriate • Gradual return to dance or sport
Question 4 of 4NPLEX-PM-176

Which finding warrants imaging and orthopedic assessment?

Answer and Clinical Rationale

Correct answer: C. Large hemarthrosis with inability to bear weight after dislocation
Explanation A large effusion or hemarthrosis may indicate: • Osteochondral fracture • Loose body • Major medial patellofemoral ligament injury • Associated ligament injury • Patellar or femoral fracture
Diagnosis: Lateral patellar dislocation and instability Key test: Patellar apprehension test Associated injuries: Osteochondral fracture, MPFL injury, loose body Treatment: Protection, early appropriate motion, quadriceps and hip rehabilitation NPLEX trap: Confirm that the extensor mechanism remains intact; inability to perform a straight-leg raise may suggest tendon rupture or fracture.
45

Iliotibial-Band Pain Syndrome

4 questions · Physical Medicine

Clinical Case
A 31-year-old long-distance runner reports gradual lateral knee pain that begins after approximately 5 km. There was no twisting injury or swelling. Examination reveals: • Tenderness near the lateral femoral epicondyle • Pain during repeated knee flexion and extension • Tightness during Ober testing • Weak hip abductors • Negative McMurray and ligament tests • Normal neurologic examination
Question 1 of 4NPLEX-PM-177

What is the most likely diagnosis?

Answer and Clinical Rationale

Correct answer: A. Iliotibial-band pain syndrome
Explanation Iliotibial-band pain syndrome is an overuse disorder associated with repetitive knee flexion and extension. It commonly causes lateral knee pain in runners and cyclists. Supporting features include: • Predictable pain after a certain running distance • Lateral femoral epicondyle tenderness • No significant effusion or instability • Training-load or biomechanical contributors
Question 2 of 4NPLEX-PM-178

Which orthopedic test assesses iliotibial-band or tensor-fascia-lata tightness?

Answer and Clinical Rationale

Correct answer: A. Ober test
Explanation The Ober test assesses the ability of the hip and thigh to adduct while the patient lies on the side. Restricted descent may suggest tightness of the iliotibial-band and tensor-fascia-lata complex.
Question 3 of 4NPLEX-PM-179

What is the most appropriate rehabilitation strategy?

Answer and Clinical Rationale

Correct answer: A. Reduce provocative running load and improve hip strength and running mechanics
Explanation Management may include: • Temporary reduction of running distance • Avoidance of excessive downhill running • Hip-abductor and external-rotator strengthening • Single-leg control training • Running-cadence or form modification when appropriate • Gradual return to previous mileage • Soft-tissue treatment as an adjunct
Question 4 of 4NPLEX-PM-180

Which finding would suggest a lateral meniscal tear instead?

Answer and Clinical Rationale

Correct answer: C. Joint-line pain with locking and a positive McMurray test
Explanation Mechanical locking, joint-line tenderness, swelling, and a positive meniscal test are more consistent with a meniscal injury.
Diagnosis: Iliotibial-band pain syndrome Differential diagnosis: Lateral meniscal tear, LCL injury, stress fracture, referred lumbar pain Key assessment: Training history, Ober test, hip strength, single-leg control Treatment: Load management, hip strengthening, running-mechanics rehabilitation NPLEX trap: Do not treat a training-load problem with passive modalities alone.
46

Hip-Flexor Contracture

4 questions · Physical Medicine

Clinical Case
A 49-year-old office worker reports anterior hip tightness and low-back fatigue after prolonged sitting. There is no acute trauma. Examination reveals: • Increased anterior pelvic tilt • Limited hip extension during walking • Tightness across the anterior hip • Positive Thomas test • Normal hip-joint internal rotation • Normal strength, sensation, and reflexes
Question 1 of 4NPLEX-PM-181

What is the most likely impairment?

Answer and Clinical Rationale

Correct answer: A. Hip-flexor contracture
Explanation Prolonged sitting may contribute to adaptive shortening or increased resting tension of the hip-flexor muscles. Possible findings include: • Limited hip extension • Increased anterior pelvic tilt • Lumbar extension compensation • Anterior hip tightness • Positive Thomas testing
Question 2 of 4NPLEX-PM-182

Which test is most appropriate?

Answer and Clinical Rationale

Correct answer: A. Thomas test
Explanation During the Thomas test, one hip is flexed toward the chest while the opposite leg remains relaxed. Elevation of the opposite thigh suggests limited hip extension or hip-flexor tightness. If the knee extends during the test, rectus-femoris tightness may also be contributing.
Question 3 of 4NPLEX-PM-183

What is the most appropriate rehabilitation plan?

Answer and Clinical Rationale

Correct answer: A. Hip-flexor mobility, gluteal strengthening, posture correction, and movement breaks
Explanation Treatment may include: • Frequent breaks from sitting • Gentle hip-flexor stretching • Gluteal strengthening • Trunk stabilization • Gait and posture retraining • Gradual hip-extension exercise • Workstation modification Sharp joint pain or neurologic symptoms require reassessment before stretching is progressed.
Question 4 of 4NPLEX-PM-184

Which finding suggests intra-articular hip disease rather than isolated muscle tightness?

Answer and Clinical Rationale

Correct answer: C. Marked groin pain with restricted passive internal rotation
Explanation Painful restriction of passive hip internal rotation raises concern for osteoarthritis, femoroacetabular disease, or another intra-articular disorder.
Diagnosis: Hip-flexor contracture and postural dysfunction Key test: Thomas test Treatment: Mobility, gluteal and trunk strengthening, ergonomic correction NPLEX trap: Do not assume that all anterior hip pain represents muscle tightness; assess passive hip-joint movement.
47

Piriformis-Region Sciatic Nerve Irritation

4 questions · Physical Medicine

Clinical Case
A 43-year-old cyclist reports deep buttock pain that occasionally radiates into the posterior thigh. Symptoms worsen after prolonged sitting and cycling. Examination reveals: • Tenderness over the deep gluteal region • Pain reproduced by combined hip flexion, adduction, and internal rotation • Pain with resisted hip external rotation • Negative straight-leg raise • Normal reflexes • Normal dermatomal sensation • Normal ankle and great-toe strength
Question 1 of 4NPLEX-PM-185

What is the most likely diagnosis?

Answer and Clinical Rationale

Correct answer: A. Piriformis-region sciatic nerve irritation
Explanation Deep gluteal pain worsened by sitting, localized tenderness, and reproduction during piriformis loading or stretching may suggest piriformis-region sciatic nerve irritation. This is a clinical diagnosis of exclusion. Lumbar nerve-root disease, hip pathology, and sacroiliac disorders must be considered.
Question 2 of 4NPLEX-PM-186

Which finding would more strongly support lumbar radiculopathy?

Answer and Clinical Rationale

Correct answer: C. Dermatomal sensory loss with myotomal weakness and reflex change
Explanation Neurologic deficits in a nerve-root pattern support lumbar radiculopathy rather than a localized deep-gluteal disorder.
Question 3 of 4NPLEX-PM-187

What is the most appropriate initial treatment?

Answer and Clinical Rationale

Correct answer: A. Activity modification, hip mobility, progressive gluteal strengthening, and sitting-position changes
Explanation A rehabilitation program may include: • Reducing prolonged sitting • Adjusting bicycle fit • Gentle piriformis and hip mobility • Gluteal strengthening • Lumbopelvic control • Neural mobility when appropriate • Gradual return to cycling Aggressive compression over an irritable sciatic nerve may worsen symptoms.
Question 4 of 4NPLEX-PM-188

Which finding requires urgent evaluation?

Answer and Clinical Rationale

Correct answer: C. New urinary retention, saddle anesthesia, and bilateral leg weakness
Explanation These symptoms suggest cauda equina syndrome rather than piriformis-related pain.
Diagnosis: Piriformis-region or deep-gluteal sciatic nerve irritation Differential diagnosis: Lumbar radiculopathy, sacroiliac pain, hip disease, hamstring injury Treatment: Activity modification, hip and lumbopelvic rehabilitation, ergonomic correction NPLEX trap: “Piriformis syndrome” should not be diagnosed without a neurologic and lumbar examination.
48

Knee Osteoarthritis and Aquatic Rehabilitation

4 questions · Physical Medicine

Clinical Case
A 70-year-old woman with obesity and bilateral knee osteoarthritis reports pain during prolonged walking and stair climbing. She has difficulty exercising on land because of pain. Examination reveals: • Bony enlargement of both knees • Mild crepitus • Reduced flexion • Quadriceps weakness • No fever • No acute redness • No major instability • Intact skin and normal temperature sensation
Question 1 of 4NPLEX-PM-189

Which exercise environment may allow conditioning with reduced joint loading?

Answer and Clinical Rationale

Correct answer: A. Warm-water aquatic exercise
Explanation Water buoyancy reduces weight-bearing load while allowing: • Walking practice • Range-of-motion exercise • Aerobic conditioning • Balance work • Lower-extremity strengthening Aquatic therapy may be particularly useful when land-based exercise is poorly tolerated.
Question 2 of 4NPLEX-PM-190

Which property of water reduces loading on the knees?

Answer and Clinical Rationale

Correct answer: A. Buoyancy
Explanation Buoyancy supports part of the patient’s body weight, reducing compressive load through painful joints. Water resistance can simultaneously provide graded strengthening.
Question 3 of 4NPLEX-PM-191

Which condition is a contraindication to group pool therapy until medically managed?

Answer and Clinical Rationale

Correct answer: C. Uncontrolled fecal incontinence or an open infected wound
Explanation Pool therapy may be inappropriate with: • Open infected wounds • Uncontrolled bowel incontinence • Certain contagious skin conditions • Unstable cardiac or respiratory disease • Uncontrolled seizures • Severe inability to enter or leave the pool safely • Acute systemic illness
Question 4 of 4NPLEX-PM-192

What should follow aquatic conditioning as tolerance improves?

Answer and Clinical Rationale

Correct answer: A. Progressive land-based strengthening and functional exercise
Explanation Aquatic therapy can help initiate movement, but long-term rehabilitation should prepare the patient for activities performed on land. Progression may include: • Sit-to-stand practice • Quadriceps and hip strengthening • Walking • Stair training • Balance exercise • Activity pacing • Weight-management support
Diagnosis: Symptomatic knee osteoarthritis Hydrotherapy option: Warm-water aquatic exercise Treatment foundation: Progressive exercise and functional rehabilitation Contraindications: Infection, unsafe cardiopulmonary status, uncontrolled incontinence, inability to participate safely NPLEX trap: Warm water may improve comfort, but passive soaking alone does not restore strength.
49

Medial Tibial Stress Syndrome

4 questions · Physical Medicine

Clinical Case
A 24-year-old new military recruit reports gradual pain along the inner lower leg after rapidly increasing running and marching. The pain initially occurs only during training. Examination reveals: • Diffuse tenderness over approximately 8 cm of the posteromedial tibial border • No focal point tenderness • No swelling • Pain with repeated running • Tight calf muscles • Foot pronation during stance • Normal neurologic and vascular examination
Question 1 of 4NPLEX-PM-193

What is the most likely diagnosis?

Answer and Clinical Rationale

Correct answer: A. Medial tibial stress syndrome
Explanation Medial tibial stress syndrome commonly presents with diffuse exertional pain and tenderness along a broad area of the posteromedial tibial border. Contributing factors may include: • Rapid training increase • Hard running surfaces • Poor recovery • Calf weakness or tightness • Foot mechanics • Inadequate footwear
Question 2 of 4NPLEX-PM-194

Which finding is more concerning for a tibial stress fracture?

Answer and Clinical Rationale

Correct answer: C. Focal bony tenderness over a small area with pain during hopping
Explanation Stress fracture is more likely when there is: • Focal point tenderness • Pain during walking or at rest • Pain during hopping • Progressive symptoms • Swelling • High-risk training or nutritional history
Question 3 of 4NPLEX-PM-195

What is the most appropriate initial treatment?

Answer and Clinical Rationale

Correct answer: A. Reduce impact load and begin a graded return with calf, foot, and hip rehabilitation
Explanation Management may include: • Temporary reduction of running • Low-impact aerobic conditioning • Calf strengthening • Foot-intrinsic exercise • Hip strengthening • Training-surface and footwear review • Correction of rapid workload progression • Gradual return to impact activity
Question 4 of 4NPLEX-PM-196

Which symptom suggests acute compartment syndrome rather than a simple overuse injury?

Answer and Clinical Rationale

Correct answer: C. Severe escalating pain with a tense compartment and pain during passive toe movement
Explanation Acute compartment syndrome is a limb-threatening emergency. Important findings include: • Pain out of proportion • Pain with passive muscle stretch • Tense swelling • Progressive sensory changes • Weakness • Late pulse changes
Diagnosis: Medial tibial stress syndrome Differential diagnosis: Tibial stress fracture, chronic exertional compartment syndrome, DVT, nerve entrapment Treatment: Load management and progressive kinetic-chain rehabilitation NPLEX trap: Diffuse tibial tenderness suggests medial tibial stress syndrome; focal tenderness raises greater concern for stress fracture.
50

Complex Regional Pain Syndrome

4 questions · Physical Medicine

Clinical Case
A 52-year-old woman presents eight weeks after a distal-radius fracture. The fracture is healing appropriately, but the patient reports severe burning hand pain that is disproportionate to the original injury. Examination reveals: • Marked sensitivity to light touch • Swelling of the hand • Shiny skin • Temperature and colour asymmetry • Reduced wrist and finger movement • Weakness caused by pain • No evidence of recurrent fracture or infection
Question 1 of 4NPLEX-PM-197

What is the most likely diagnosis?

Answer and Clinical Rationale

Correct answer: A. Complex regional pain syndrome
Explanation Complex regional pain syndrome may develop after trauma, fracture, surgery, or immobilization. Characteristic features include: • Pain disproportionate to the original injury • Allodynia or hyperalgesia • Temperature or colour asymmetry • Sweating changes • Edema • Reduced movement • Motor dysfunction • Trophic skin, hair, or nail changes
Question 2 of 4NPLEX-PM-198

Which finding represents allodynia?

Answer and Clinical Rationale

Correct answer: A. Severe pain produced by light touch that is not normally painful
Explanation Allodynia occurs when a normally non-painful stimulus, such as light touch or clothing contact, produces pain. Hyperalgesia is an exaggerated response to a stimulus that is normally painful.
Question 3 of 4NPLEX-PM-199

What is the most appropriate rehabilitation approach?

Answer and Clinical Rationale

Correct answer: A. Early interdisciplinary care with desensitization, graded movement, functional use, and pain education
Explanation Rehabilitation may include: • Gentle desensitization • Edema management • Active range of motion • Graded motor imagery • Mirror therapy • Progressive functional use • Pain education • Psychological support • Medication management through an appropriate clinician • Occupational or hand therapy The program should encourage function without repeatedly provoking severe symptom flares.
Question 4 of 4NPLEX-PM-200

Which treatment approach is most likely to worsen the condition?

Answer and Clinical Rationale

Correct answer: A. Repeated aggressive pain-provoking treatment that reinforces guarding and fear
Explanation Excessively painful treatment may increase: • Guarding • Fear of movement • Autonomic symptoms • Swelling • Functional avoidance • Central pain sensitization Treatment should be progressive, consistent, and function-oriented.
Diagnosis: Complex regional pain syndrome Key features: Disproportionate pain, allodynia, autonomic change, edema, reduced movement, trophic changes Differential diagnosis: Infection, recurrent fracture, nerve entrapment, vascular obstruction Treatment: Early interdisciplinary rehabilitation, desensitization, graded movement, pain management NPLEX trap: Severe pain does not justify prolonged immobilization; early carefully graded functional restoration is essential.
51

Adolescent Spinal Asymmetry

6 questions · Physical Medicine · Orthopedic source case 1

Clinical Case
A 14-year-old girl presents after her parent notices uneven shoulders. She has no pain, neurological symptoms, trauma, or systemic illness. Examination reveals right shoulder elevation and mild waist asymmetry.
Question 1 of 6NPLEX-PM-201

Which test is most appropriate?

Answer and Clinical Rationale

Correct answer: A. Adam forward-bend test
Explanation The Adam forward-bend test screens for scoliosis and rotational spinal asymmetry.
Question 2 of 6NPLEX-PM-202

Which finding constitutes a positive test?

Answer and Clinical Rationale

Correct answer: B. Persistent rib prominence
Explanation A persistent rib hump or lumbar prominence during forward flexion suggests vertebral rotation associated with structural scoliosis.
Question 3 of 6NPLEX-PM-203

The asymmetry disappears during forward flexion. What is the best interpretation?

Answer and Clinical Rationale

Correct answer: B. Functional scoliosis
Explanation A flexible curve that corrects with positioning is more consistent with functional or postural scoliosis.
Question 4 of 6NPLEX-PM-204

Which imaging study is most appropriate when clinically significant scoliosis is suspected?

Answer and Clinical Rationale

Correct answer: B. Standing spinal radiographs
Explanation Standing posteroanterior and lateral radiographs allow assessment of the full curve under weight-bearing conditions.
Question 5 of 6NPLEX-PM-205

Which measurement quantifies the spinal curvature?

Answer and Clinical Rationale

Correct answer: A. Cobb angle
Explanation The Cobb angle is measured on spinal radiographs to quantify scoliosis.
Question 6 of 6NPLEX-PM-206

Which finding warrants expedited specialist assessment?

Answer and Clinical Rationale

Correct answer: C. Rapid progression with weakness
Explanation Rapid curve progression, neurological deficits, severe pain, systemic symptoms, or an atypical curve may indicate serious underlying pathology.
Orthopedic Test Source Case: 1 Test or topic: ADOLESCENT SPINAL ASYMMETRY NPLEX Examination Trap The Adam test screens for rotational asymmetry but does not measure the Cobb angle.
52

Bechterew Test

6 questions · Physical Medicine · Orthopedic source case 11

Clinical Case
A 43-year-old warehouse worker reports low-back pain radiating into the left posterior thigh and calf. Symptoms worsen with sitting, coughing, and forward bending.
Question 1 of 6NPLEX-PM-207

Which seated test is most appropriate?

Answer and Clinical Rationale

Correct answer: A. Bechterew test
Explanation The Bechterew test is a seated neural-tension test for lumbosacral nerve-root or sciatic-nerve irritation.
Question 2 of 6NPLEX-PM-208

How is the test performed?

Answer and Clinical Rationale

Correct answer: A. Extend each knee while seated
Explanation Seated knee extension increases tension on the sciatic nerve and lumbosacral nerve roots.
Question 3 of 6NPLEX-PM-209

What constitutes a positive result?

Answer and Clinical Rationale

Correct answer: B. Familiar radiating leg pain
Explanation Reproduction of the patient’s familiar radicular pain is the clinically meaningful finding.
Question 4 of 6NPLEX-PM-210

The patient leans backward while extending the knee. Why?

Answer and Clinical Rationale

Correct answer: B. To reduce neural tension
Explanation Leaning backward may reduce neural tension and allow further knee extension.
Question 5 of 6NPLEX-PM-211

Which test could corroborate the finding?

Answer and Clinical Rationale

Correct answer: C. Straight-leg raise test
Explanation Supine straight-leg raising assesses similar lumbosacral neural structures.
Question 6 of 6NPLEX-PM-212

Which finding requires emergency referral?

Answer and Clinical Rationale

Correct answer: C. New urinary retention
Explanation Urinary retention, saddle anesthesia, or progressive bilateral weakness suggests cauda equina syndrome.
Orthopedic Test Source Case: 11 Test or topic: BECHTEREW TEST NPLEX Examination Trap Painless hamstring tightness is not a positive neural-tension test.
53

Lindner Test

6 questions · Physical Medicine · Orthopedic source case 12

Clinical Case
A 41-year-old patient reports neck and spinal pain with intermittent extremity paresthesia. Symptoms worsen when the neck is flexed.
Question 1 of 6NPLEX-PM-213

Which test combines cervical flexion with straight-leg elevation?

Answer and Clinical Rationale

Correct answer: B. Lindner test
Explanation The Lindner test increases tension through the spinal dura and associated nerve roots.
Question 2 of 6NPLEX-PM-214

Which finding constitutes a positive result?

Answer and Clinical Rationale

Correct answer: A. Familiar spinal or radicular pain
Explanation Reproduction of familiar radiating symptoms suggests neural or dural irritation.
Question 3 of 6NPLEX-PM-215

Which tissues are principally stressed?

Answer and Clinical Rationale

Correct answer: A. Spinal dura and nerve roots
Explanation Cervical flexion and leg elevation increase tension throughout the spinal neural system.
Question 4 of 6NPLEX-PM-216

Which condition contraindicates the maneuver?

Answer and Clinical Rationale

Correct answer: B. Suspected spinal fracture
Explanation Provocative testing is unsafe when fracture or spinal instability is suspected.
Question 5 of 6NPLEX-PM-217

A positive Lindner test identifies the exact lesion and spinal level.

Answer and Clinical Rationale

Correct answer: B. False
Explanation It may demonstrate neural tension but cannot independently localize or identify the lesion.
Question 6 of 6NPLEX-PM-218

Progressive weakness with bilateral hyperreflexia requires:

Answer and Clinical Rationale

Correct answer: C. Prompt imaging and referral
Explanation These findings raise concern for spinal-cord compression.
Orthopedic Test Source Case: 12 Test or topic: LINDNER TEST NPLEX Examination Trap Neural-tension tests support clinical reasoning but do not establish the precise diagnosis.
54

Milgram Test

6 questions · Physical Medicine · Orthopedic source case 13

Clinical Case
A 50-year-old patient reports persistent lumbar pain with intermittent leg radiation. While supine, the patient is asked to elevate both straight legs approximately 15 cm and hold them.
Question 1 of 6NPLEX-PM-219

Which test is being performed?

Answer and Clinical Rationale

Correct answer: C. Milgram test
Explanation The Milgram test involves holding both straight legs above the table.
Question 2 of 6NPLEX-PM-220

What constitutes a positive result?

Answer and Clinical Rationale

Correct answer: A. Familiar lumbar or radicular pain
Explanation Reproduction of significant lumbar or radicular pain is the relevant positive result.
Question 3 of 6NPLEX-PM-221

What does the maneuver principally stress?

Answer and Clinical Rationale

Correct answer: A. Lumbosacral region and intrathecal contents
Explanation Bilateral leg elevation loads the lumbar spine and increases abdominal and intrathecal pressure.
Question 4 of 6NPLEX-PM-222

Which patient should not undergo this test?

Answer and Clinical Rationale

Correct answer: B. Suspected acute lumbar fracture
Explanation Provocative loading is inappropriate when fracture or instability is possible.
Question 5 of 6NPLEX-PM-223

Which finding is least specific?

Answer and Clinical Rationale

Correct answer: C. Isolated abdominal fatigue
Explanation Muscular fatigue can result from deconditioning and does not constitute a positive test.
Question 6 of 6NPLEX-PM-224

Which additional feature warrants urgent investigation?

Answer and Clinical Rationale

Correct answer: B. Fever with night pain
Explanation Fever and persistent night pain raise concern for infection, malignancy, or another serious disorder.
Orthopedic Test Source Case: 13 Test or topic: MILGRAM TEST NPLEX Examination Trap Inability to hold the legs because of weakness or deconditioning is not necessarily a positive Milgram test.
55

Minor Sign

6 questions · Physical Medicine · Orthopedic source case 14

Clinical Case
A 57-year-old patient with acute low-back pain rises from a chair by pushing on both thighs. The trunk remains rigid, and lumbar flexion is avoided.
Question 1 of 6NPLEX-PM-225

Which sign is being observed?

Answer and Clinical Rationale

Correct answer: A. Minor sign
Explanation Minor sign describes guarded movement used to avoid painful spinal motion.
Question 2 of 6NPLEX-PM-226

What does the sign indicate?

Answer and Clinical Rationale

Correct answer: A. Painful or guarded spinal movement
Explanation It demonstrates functional adaptation to pain but not a specific lesion.
Question 3 of 6NPLEX-PM-227

Which interpretation is most accurate?

Answer and Clinical Rationale

Correct answer: C. It is a nonspecific observation
Explanation Many painful spinal conditions can produce guarded movement.
Question 4 of 6NPLEX-PM-228

Which finding supports nerve-root involvement?

Answer and Clinical Rationale

Correct answer: A. Dermatomal sensory loss
Explanation Anatomically consistent sensory loss, weakness, and reflex changes support radiculopathy.
Question 5 of 6NPLEX-PM-229

Which feature requires urgent investigation?

Answer and Clinical Rationale

Correct answer: C. Previous cancer with night pain
Explanation Malignancy history and new persistent night pain raise concern for metastatic disease.
Question 6 of 6NPLEX-PM-230

Which documentation is most appropriate?

Answer and Clinical Rationale

Correct answer: B. “Patient used both arms to rise while keeping the trunk rigid.”
Explanation Document the observed movement objectively without assigning an unsupported diagnosis or motive.
Orthopedic Test Source Case: 14 Test or topic: MINOR SIGN NPLEX Examination Trap Minor sign is not a malingering test.
56

Shoulder Depression and Soto-Hall Tests

6 questions · Physical Medicine · Orthopedic source case 15

Clinical Case
A 45-year-old patient reports neck pain radiating into the lateral forearm after a traction injury.
Question 1 of 6NPLEX-PM-231

Depression of the symptomatic shoulder while laterally flexing the head away describes:

Answer and Clinical Rationale

Correct answer: B. Shoulder depression test
Explanation This maneuver increases tension on the cervical nerve roots and brachial plexus.
Question 2 of 6NPLEX-PM-232

What constitutes a positive result?

Answer and Clinical Rationale

Correct answer: A. Familiar radiating arm pain
Explanation Reproduction of familiar neurological symptoms is more meaningful than muscular stretching.
Question 3 of 6NPLEX-PM-233

Which structures are principally stressed?

Answer and Clinical Rationale

Correct answer: A. Cervical roots and brachial plexus
Explanation Shoulder depression with contralateral neck flexion increases cervical neural tension.
Question 4 of 6NPLEX-PM-234

Flexing the neck of a supine patient while stabilizing the sternum describes:

Answer and Clinical Rationale

Correct answer: C. Soto-Hall test
Explanation Soto-Hall testing provokes pain from cervical spinal lesions.
Question 5 of 6NPLEX-PM-235

Which result after trauma is most concerning?

Answer and Clinical Rationale

Correct answer: B. Severe focal cervical pain
Explanation Severe focal pain after trauma raises concern for fracture or ligamentous injury.
Question 6 of 6NPLEX-PM-236

What should be done when fracture is suspected?

Answer and Clinical Rationale

Correct answer: C. Immobilize and arrange urgent imaging
Explanation Suspected fracture or instability requires protection and urgent evaluation.
Orthopedic Test Source Case: 15 Test or topic: SHOULDER DEPRESSION AND SOTO-HALL TESTS NPLEX Examination Trap Do not perform provocative cervical tests before excluding serious traumatic injury.
57

Subacromial Shoulder Pain

6 questions · Physical Medicine · Orthopedic source case 16

Clinical Case
A 46-year-old painter reports progressive anterolateral shoulder pain during overhead activity. Passive motion is nearly full.
Question 1 of 6NPLEX-PM-237

Which test passively elevates the internally rotated arm while stabilizing the scapula?

Answer and Clinical Rationale

Correct answer: B. Neer test
Explanation The Neer test compresses structures within the subacromial region.
Question 2 of 6NPLEX-PM-238

Which other test evaluates the same general syndrome?

Answer and Clinical Rationale

Correct answer: A. Hawkins–Kennedy test
Explanation Hawkins–Kennedy testing provokes subacromial structures through forced internal rotation.
Question 3 of 6NPLEX-PM-239

What constitutes a positive result?

Answer and Clinical Rationale

Correct answer: A. Familiar anterolateral shoulder pain
Explanation Reproduction of the typical shoulder pain supports a subacromial pain presentation.
Question 4 of 6NPLEX-PM-240

Marked restriction of active and passive external rotation suggests:

Answer and Clinical Rationale

Correct answer: A. Adhesive capsulitis
Explanation Adhesive capsulitis restricts both active and passive glenohumeral motion.
Question 5 of 6NPLEX-PM-241

Inability to lower the abducted arm smoothly suggests:

Answer and Clinical Rationale

Correct answer: A. Significant rotator-cuff dysfunction
Explanation An abnormal drop-arm test suggests substantial rotator-cuff weakness or tearing.
Question 6 of 6NPLEX-PM-242

What is appropriate when no trauma, major weakness, or red flags are present?

Answer and Clinical Rationale

Correct answer: A. Activity modification and rehabilitation
Explanation Initial care generally includes activity modification and progressive mobility and strengthening.
Orthopedic Test Source Case: 16 Test or topic: SUBACROMIAL SHOULDER PAIN NPLEX Examination Trap Neer and Hawkins–Kennedy tests do not independently identify the exact injured tendon.
58

Rotator-Cuff Tear

6 questions · Physical Medicine · Orthopedic source case 17

Clinical Case
A 64-year-old patient falls onto the shoulder. The patient can initiate abduction but cannot maintain or smoothly lower the arm. Passive motion is preserved.
Question 1 of 6NPLEX-PM-243

Which test is most appropriate?

Answer and Clinical Rationale

Correct answer: B. Drop-arm test
Explanation The drop-arm test assesses the ability to maintain and control shoulder abduction.
Question 2 of 6NPLEX-PM-244

What constitutes a positive result?

Answer and Clinical Rationale

Correct answer: A. The arm drops suddenly
Explanation Sudden dropping or uncontrolled lowering suggests major rotator-cuff dysfunction.
Question 3 of 6NPLEX-PM-245

Which tendon is most commonly implicated?

Answer and Clinical Rationale

Correct answer: A. Supraspinatus
Explanation The supraspinatus is important in shoulder abduction and is commonly involved in cuff tears.
Question 4 of 6NPLEX-PM-246

Preserved passive motion with markedly impaired active motion favors:

Answer and Clinical Rationale

Correct answer: A. Rotator-cuff dysfunction
Explanation This discrepancy suggests weakness, pain inhibition, or tendon failure rather than fixed capsular restriction.
Question 5 of 6NPLEX-PM-247

Which study can assess tendon integrity?

Answer and Clinical Rationale

Correct answer: A. Musculoskeletal ultrasonography
Explanation Musculoskeletal ultrasonography or MRI may evaluate rotator-cuff integrity.
Question 6 of 6NPLEX-PM-248

What is appropriate after an acute traumatic tear with major weakness?

Answer and Clinical Rationale

Correct answer: B. Prompt imaging and referral
Explanation Acute traumatic weakness warrants timely imaging and orthopedic assessment.
Orthopedic Test Source Case: 17 Test or topic: ROTATOR-CUFF TEAR NPLEX Examination Trap Pain inhibition may resemble weakness; compare active and passive movement carefully.
59

Anterior Glenohumeral Instability

6 questions · Physical Medicine · Orthopedic source case 18

Clinical Case
A 23-year-old volleyball player previously sustained an anterior shoulder dislocation. The shoulder now feels as though it will dislocate during abduction and external rotation.
Question 1 of 6NPLEX-PM-249

Which test is most appropriate?

Answer and Clinical Rationale

Correct answer: A. Anterior apprehension test
Explanation This test places the shoulder in a position that stresses anterior glenohumeral stability.
Question 2 of 6NPLEX-PM-250

What constitutes a positive result?

Answer and Clinical Rationale

Correct answer: A. Apprehension of imminent dislocation
Explanation True apprehension is more characteristic of instability than pain alone.
Question 3 of 6NPLEX-PM-251

Which structure is commonly injured during anterior dislocation?

Answer and Clinical Rationale

Correct answer: A. Anterior-inferior labrum
Explanation A Bankart lesion involves the anterior-inferior glenoid labrum.
Question 4 of 6NPLEX-PM-252

Which nerve is particularly vulnerable?

Answer and Clinical Rationale

Correct answer: A. Axillary nerve
Explanation Assess deltoid strength and sensation over the lateral shoulder.
Question 5 of 6NPLEX-PM-253

What must be documented before and after reduction?

Answer and Clinical Rationale

Correct answer: A. Distal neurovascular findings
Explanation Pulses, perfusion, sensation, and motor function must be assessed.
Question 6 of 6NPLEX-PM-254

A newly deformed shoulder after trauma requires:

Answer and Clinical Rationale

Correct answer: B. Prompt assessment and imaging
Explanation Suspected acute dislocation or fracture requires urgent evaluation.
Orthopedic Test Source Case: 18 Test or topic: ANTERIOR GLENOHUMERAL INSTABILITY NPLEX Examination Trap Apprehension—not pain alone—is the defining positive finding.
60

Long-Head Biceps Pathology

6 questions · Physical Medicine · Orthopedic source case 19

Clinical Case
A 38-year-old weightlifter reports anterior shoulder pain during overhead activity and resisted elbow flexion. The bicipital groove is tender.
Question 1 of 6NPLEX-PM-255

Which test loads the biceps during resisted shoulder flexion?

Answer and Clinical Rationale

Correct answer: C. Speed test
Explanation Speed testing loads the long-head biceps tendon with resisted shoulder flexion.
Question 2 of 6NPLEX-PM-256

What constitutes a positive Speed test?

Answer and Clinical Rationale

Correct answer: A. Bicipital-groove pain
Explanation Familiar anterior pain localized over the bicipital groove supports biceps-related pathology.
Question 3 of 6NPLEX-PM-257

Which additional disorder may produce a positive result?

Answer and Clinical Rationale

Correct answer: A. Superior labral pathology
Explanation The long-head biceps attaches to the superior labrum.
Question 4 of 6NPLEX-PM-258

Which test loads the biceps during resisted supination?

Answer and Clinical Rationale

Correct answer: B. Yergason test
Explanation Yergason testing uses resisted supination and external rotation.
Question 5 of 6NPLEX-PM-259

A palpable snap from the bicipital groove suggests:

Answer and Clinical Rationale

Correct answer: A. Biceps tendon instability
Explanation Snapping may indicate subluxation of the long-head biceps tendon.
Question 6 of 6NPLEX-PM-260

Which finding warrants prompt assessment?

Answer and Clinical Rationale

Correct answer: B. Sudden bruising and “Popeye” deformity
Explanation Sudden bruising, weakness, and deformity suggest biceps tendon rupture.
Orthopedic Test Source Case: 19 Test or topic: LONG-HEAD BICEPS PATHOLOGY NPLEX Examination Trap Speed and Yergason findings must be correlated with tenderness, strength, and mechanism.
61

Apley Scratch Test

6 questions · Physical Medicine · Orthopedic source case 20

Clinical Case
A 59-year-old patient reports difficulty dressing and reaching behind the back. There is no history of trauma.
Question 1 of 6NPLEX-PM-261

Which test screens combined shoulder mobility?

Answer and Clinical Rationale

Correct answer: A. Apley scratch test
Explanation The Apley scratch test provides a functional screen of combined shoulder movement.
Question 2 of 6NPLEX-PM-262

Reaching over the head toward the opposite scapula assesses:

Answer and Clinical Rationale

Correct answer: A. Abduction and external rotation
Explanation The superior component requires abduction and external rotation.
Question 3 of 6NPLEX-PM-263

Reaching behind the back toward the opposite scapula assesses:

Answer and Clinical Rationale

Correct answer: B. Adduction and internal rotation
Explanation The inferior component requires extension, adduction, and internal rotation.
Question 4 of 6NPLEX-PM-264

Markedly restricted active and passive external rotation suggests:

Answer and Clinical Rationale

Correct answer: A. Adhesive capsulitis
Explanation Adhesive capsulitis causes restriction of both active and passive motion.
Question 5 of 6NPLEX-PM-265

Reduced active motion with relatively preserved passive motion suggests:

Answer and Clinical Rationale

Correct answer: A. Rotator-cuff dysfunction
Explanation This pattern suggests weakness, tendon dysfunction, or pain inhibition.
Question 6 of 6NPLEX-PM-266

Which statement is most accurate?

Answer and Clinical Rationale

Correct answer: B. The test screens functional shoulder mobility
Explanation It identifies functional restriction but does not establish a specific tissue diagnosis.
Orthopedic Test Source Case: 20 Test or topic: APLEY SCRATCH TEST NPLEX Examination Trap The Apley scratch test is a mobility screen, not a definitive diagnostic test.
62

Posterior Shoulder Instability

6 questions · Physical Medicine · Orthopedic source case 21

Clinical Case
A 25-year-old football player reports posterior shoulder pain and a sensation of instability after falling onto an adducted, internally rotated arm.
Question 1 of 6NPLEX-PM-267

Which test is most appropriate?

Answer and Clinical Rationale

Correct answer: B. Posterior apprehension test
Explanation The posterior apprehension test assesses posterior glenohumeral instability.
Question 2 of 6NPLEX-PM-268

Which position principally stresses posterior stability?

Answer and Clinical Rationale

Correct answer: B. Flexion, adduction, and internal rotation
Explanation Posteriorly directed force through a flexed, adducted, internally rotated arm stresses the posterior capsule.
Question 3 of 6NPLEX-PM-269

What constitutes a positive result?

Answer and Clinical Rationale

Correct answer: A. Apprehension of posterior displacement
Explanation Apprehension or a sense of impending posterior displacement is more significant than pain alone.
Question 4 of 6NPLEX-PM-270

Which mechanism is associated with posterior dislocation?

Answer and Clinical Rationale

Correct answer: B. Seizure or electrical injury
Explanation Powerful internal rotator contraction during a seizure or electrical injury can cause posterior shoulder dislocation.
Question 5 of 6NPLEX-PM-271

Which radiographic view may help identify posterior dislocation?

Answer and Clinical Rationale

Correct answer: A. Axillary view
Explanation An axillary or scapular-Y view helps demonstrate glenohumeral alignment.
Question 6 of 6NPLEX-PM-272

What is appropriate when acute dislocation is suspected?

Answer and Clinical Rationale

Correct answer: B. Prompt imaging and urgent management
Explanation Suspected dislocation requires neurovascular assessment, imaging, and appropriate reduction by a qualified clinician.
Orthopedic Test Source Case: 21 Test or topic: POSTERIOR SHOULDER INSTABILITY NPLEX Examination Trap Posterior dislocation may be missed on a routine anteroposterior radiograph.
63

Biceps Tendon Instability

6 questions · Physical Medicine · Orthopedic source case 22

Clinical Case
A 40-year-old patient reports anterior shoulder pain and clicking during forearm rotation. Examination reveals tenderness over the bicipital groove.
Question 1 of 6NPLEX-PM-273

Which test is most appropriate?

Answer and Clinical Rationale

Correct answer: A. Lippman test
Explanation The Lippman test assesses tenderness or instability involving the long-head biceps tendon.
Question 2 of 6NPLEX-PM-274

Where is the long-head biceps tendon palpated?

Answer and Clinical Rationale

Correct answer: A. Bicipital groove
Explanation The tendon travels within the intertubercular, or bicipital, groove.
Question 3 of 6NPLEX-PM-275

Which finding constitutes a positive test?

Answer and Clinical Rationale

Correct answer: A. Tenderness or abnormal tendon movement
Explanation Pain, tenderness, or abnormal displacement of the tendon supports biceps tendon pathology.
Question 4 of 6NPLEX-PM-276

Which test also evaluates the long-head biceps during resisted supination?

Answer and Clinical Rationale

Correct answer: C. Yergason test
Explanation Yergason testing uses resisted supination and external rotation to load the biceps tendon.
Question 5 of 6NPLEX-PM-277

Which associated structure may be involved?

Answer and Clinical Rationale

Correct answer: A. Superior glenoid labrum
Explanation The long-head biceps originates from the superior labrum and supraglenoid region.
Question 6 of 6NPLEX-PM-278

Sudden bruising with a “Popeye” deformity suggests:

Answer and Clinical Rationale

Correct answer: A. Biceps tendon rupture
Explanation Distal bunching of the muscle with bruising and weakness suggests proximal long-head biceps rupture.
Orthopedic Test Source Case: 22 Test or topic: BICEPS TENDON INSTABILITY NPLEX Examination Trap Anterior shoulder pain is not automatically biceps tendinopathy; correlate the test with localized tenderness and function.
64

Acute Painful Shoulder after A Fall

6 questions · Physical Medicine · Orthopedic source case 23

Clinical Case
A 71-year-old patient falls onto the lateral shoulder. Examination shows swelling, focal bony tenderness, and an inability to actively abduct the arm.
Question 1 of 6NPLEX-PM-279

What should be done before provocative shoulder testing?

Answer and Clinical Rationale

Correct answer: A. Exclude fracture or dislocation
Explanation Acute trauma, bony tenderness, deformity, or marked functional loss requires assessment for fracture or dislocation.
Question 2 of 6NPLEX-PM-280

Which study is initially appropriate?

Answer and Clinical Rationale

Correct answer: A. Plain shoulder radiographs
Explanation Radiographs are the usual initial study for suspected acute fracture or dislocation.
Question 3 of 6NPLEX-PM-281

Which injury is common after a fall in an older adult?

Answer and Clinical Rationale

Correct answer: A. Proximal humeral fracture
Explanation Older adults are at increased risk of proximal humeral fracture following a fall.
Question 4 of 6NPLEX-PM-282

Which test should be deferred until fracture is excluded?

Answer and Clinical Rationale

Correct answer: A. Drop-arm test
Explanation Provocative or resisted testing can worsen pain or displacement when fracture is possible.
Question 5 of 6NPLEX-PM-283

Which nerve should be assessed around the lateral shoulder?

Answer and Clinical Rationale

Correct answer: A. Axillary nerve
Explanation Assess deltoid function and sensation over the lateral shoulder.
Question 6 of 6NPLEX-PM-284

Which finding requires urgent vascular assessment?

Answer and Clinical Rationale

Correct answer: B. Absent distal pulse
Explanation An absent pulse or impaired perfusion may indicate arterial injury.
Orthopedic Test Source Case: 23 Test or topic: ACUTE PAINFUL SHOULDER AFTER A FALL NPLEX Examination Trap Safety and fracture exclusion take priority over completing special tests.
65

Shoulder Pain from the Cervical Spine

6 questions · Physical Medicine · Orthopedic source case 24

Clinical Case
A 52-year-old patient reports shoulder pain extending into the forearm. Shoulder range of motion is painless, but neck extension and rotation reproduce the symptoms.
Question 1 of 6NPLEX-PM-285

Which diagnosis is most likely?

Answer and Clinical Rationale

Correct answer: A. Cervical radiculopathy
Explanation Pain extending below the shoulder with symptoms reproduced by neck movement supports cervical nerve-root irritation.
Question 2 of 6NPLEX-PM-286

Which test may reproduce the symptoms?

Answer and Clinical Rationale

Correct answer: A. Cervical compression test
Explanation Cervical compression may reproduce dermatomal arm pain by narrowing the neural foramen.
Question 3 of 6NPLEX-PM-287

Which finding favors cervical radiculopathy?

Answer and Clinical Rationale

Correct answer: A. Dermatomal sensory change
Explanation Dermatomal sensory loss, myotomal weakness, and reflex alteration support nerve-root disease.
Question 4 of 6NPLEX-PM-288

Which test may relieve radicular pain?

Answer and Clinical Rationale

Correct answer: A. Cervical distraction test
Explanation Distraction may reduce foraminal pressure and relieve nerve-root symptoms.
Question 5 of 6NPLEX-PM-289

Which finding suggests shoulder rather than cervical pathology?

Answer and Clinical Rationale

Correct answer: A. Pain with resisted shoulder abduction
Explanation Local shoulder pain and weakness during targeted shoulder testing favor intrinsic shoulder pathology.
Question 6 of 6NPLEX-PM-290

Bilateral hyperreflexia and gait dysfunction require:

Answer and Clinical Rationale

Correct answer: B. Prompt cervical imaging and referral
Explanation These findings suggest possible cervical myelopathy.
Orthopedic Test Source Case: 24 Test or topic: SHOULDER PAIN FROM THE CERVICAL SPINE NPLEX Examination Trap Not all pain felt in the shoulder originates from the shoulder.
66

Shoulder Test Interpretation

6 questions · Physical Medicine · Orthopedic source case 25

Clinical Case
A 49-year-old construction worker has lateral shoulder pain during overhead activity. Hawkins–Kennedy and Neer tests reproduce pain, but strength is normal and the drop-arm test is negative.
Question 1 of 6NPLEX-PM-291

What is the most likely clinical syndrome?

Answer and Clinical Rationale

Correct answer: A. Subacromial pain syndrome
Explanation Overhead pain with positive impingement maneuvers and preserved strength supports subacromial pain syndrome.
Question 2 of 6NPLEX-PM-292

A negative drop-arm test makes which condition less likely?

Answer and Clinical Rationale

Correct answer: A. Large rotator-cuff tear
Explanation A large cuff tear is more likely to produce marked weakness or inability to control arm lowering.
Question 3 of 6NPLEX-PM-293

Which statement is most accurate?

Answer and Clinical Rationale

Correct answer: B. A cluster of findings is more informative
Explanation Shoulder tests have limited accuracy individually and should be interpreted with history, strength, motion, and other findings.
Question 4 of 6NPLEX-PM-294

Which finding suggests adhesive capsulitis instead?

Answer and Clinical Rationale

Correct answer: A. Markedly restricted passive external rotation
Explanation Loss of passive external rotation is characteristic of adhesive capsulitis.
Question 5 of 6NPLEX-PM-295

Which initial intervention is appropriate?

Answer and Clinical Rationale

Correct answer: A. Relative activity modification and exercise
Explanation Progressive mobility and strengthening with temporary activity modification are usually appropriate without red flags.
Question 6 of 6NPLEX-PM-296

Which development warrants imaging or referral?

Answer and Clinical Rationale

Correct answer: B. Progressive objective weakness
Explanation Progressive weakness raises concern for significant tendon or neurological pathology.
Orthopedic Test Source Case: 25 Test or topic: SHOULDER TEST INTERPRETATION NPLEX Examination Trap A positive impingement test does not reveal the precise pain-generating tissue.
67

Lateral Epicondylopathy

6 questions · Physical Medicine · Orthopedic source case 26

Clinical Case
A 42-year-old carpenter reports lateral elbow pain aggravated by gripping and using a screwdriver. There is tenderness over the lateral epicondyle.
Question 1 of 6NPLEX-PM-297

Which test is most appropriate?

Answer and Clinical Rationale

Correct answer: A. Cozen test
Explanation Cozen testing loads the common wrist-extensor tendon origin.
Question 2 of 6NPLEX-PM-298

How is Cozen testing performed?

Answer and Clinical Rationale

Correct answer: A. Resisted wrist extension with radial deviation
Explanation The patient extends and radially deviates the wrist against resistance while the elbow is stabilized.
Question 3 of 6NPLEX-PM-299

What constitutes a positive result?

Answer and Clinical Rationale

Correct answer: A. Familiar lateral epicondylar pain
Explanation Reproduction of pain at the lateral epicondyle supports lateral epicondylopathy.
Question 4 of 6NPLEX-PM-300

Which test passively stretches the involved extensor tendons?

Answer and Clinical Rationale

Correct answer: A. Mill test
Explanation Mill testing passively pronates the forearm, flexes the wrist, and extends the elbow.
Question 5 of 6NPLEX-PM-301

Which nerve disorder may resemble lateral epicondylopathy?

Answer and Clinical Rationale

Correct answer: A. Radial tunnel syndrome
Explanation Radial tunnel syndrome may cause proximal dorsal forearm pain and should remain in the differential.
Question 6 of 6NPLEX-PM-302

Which initial treatment is appropriate?

Answer and Clinical Rationale

Correct answer: A. Activity modification and graded loading
Explanation Initial care includes load modification and progressive strengthening of the wrist extensors.
Orthopedic Test Source Case: 26 Test or topic: LATERAL EPICONDYLOPATHY NPLEX Examination Trap Maximal tenderness distal to the lateral epicondyle may suggest radial tunnel syndrome rather than tendon-origin pain.
68

Medial Epicondylopathy

6 questions · Physical Medicine · Orthopedic source case 27

Clinical Case
A 45-year-old golfer reports medial elbow pain aggravated by gripping and resisted wrist flexion. There is no hand numbness.
Question 1 of 6NPLEX-PM-303

Which test is most appropriate?

Answer and Clinical Rationale

Correct answer: A. Reverse Cozen test
Explanation Reverse Cozen testing loads the wrist-flexor and pronator tendon origin.
Question 2 of 6NPLEX-PM-304

What constitutes a positive result?

Answer and Clinical Rationale

Correct answer: A. Familiar medial epicondylar pain
Explanation Pain localized to the common flexor-pronator origin supports medial epicondylopathy.
Question 3 of 6NPLEX-PM-305

Which maneuver passively stretches the involved tissues?

Answer and Clinical Rationale

Correct answer: A. Reverse Mill test
Explanation Reverse Mill testing stretches the wrist-flexor and pronator structures.
Question 4 of 6NPLEX-PM-306

Which nerve passes behind the medial epicondyle?

Answer and Clinical Rationale

Correct answer: A. Ulnar nerve
Explanation The ulnar nerve passes through the cubital tunnel near the medial epicondyle.
Question 5 of 6NPLEX-PM-307

Which finding suggests ulnar neuropathy instead?

Answer and Clinical Rationale

Correct answer: A. Paresthesia in the fourth and fifth digits
Explanation Ulnar neuropathy commonly affects sensation in the little finger and ulnar half of the ring finger.
Question 6 of 6NPLEX-PM-308

Progressive intrinsic-hand weakness requires:

Answer and Clinical Rationale

Correct answer: B. Neurological evaluation and referral
Explanation Progressive weakness may indicate clinically significant ulnar-nerve compression.
Orthopedic Test Source Case: 27 Test or topic: MEDIAL EPICONDYLOPATHY NPLEX Examination Trap Medial elbow pain may arise from tendon, ligament, joint, or ulnar-nerve pathology.
69

De Quervain Tenosynovitis

6 questions · Physical Medicine · Orthopedic source case 28

Clinical Case
A 34-year-old parent develops radial-sided wrist pain after repeatedly lifting an infant. Pain is localized near the radial styloid.
Question 1 of 6NPLEX-PM-309

Which test is most appropriate?

Answer and Clinical Rationale

Correct answer: B. Finkelstein test
Explanation Finkelstein testing stresses the first dorsal extensor compartment.
Question 2 of 6NPLEX-PM-310

How is the test performed?

Answer and Clinical Rationale

Correct answer: A. Thumb enclosed in the fist with ulnar deviation
Explanation Ulnar deviation with the thumb enclosed stresses the abductor pollicis longus and extensor pollicis brevis tendons.
Question 3 of 6NPLEX-PM-311

What constitutes a positive result?

Answer and Clinical Rationale

Correct answer: A. Sharp pain at the radial styloid
Explanation Reproduction of familiar pain over the first dorsal compartment supports de Quervain tenosynovitis.
Question 4 of 6NPLEX-PM-312

Which tendons are involved?

Answer and Clinical Rationale

Correct answer: A. APL and EPB
Explanation Abductor pollicis longus and extensor pollicis brevis pass through the first dorsal compartment.
Question 5 of 6NPLEX-PM-313

Which condition should remain in the differential after trauma?

Answer and Clinical Rationale

Correct answer: A. Scaphoid fracture
Explanation Radial wrist pain after trauma requires assessment for scaphoid injury.
Question 6 of 6NPLEX-PM-314

Which initial management is appropriate?

Answer and Clinical Rationale

Correct answer: A. Activity modification and thumb-spica support
Explanation Initial care commonly includes reducing aggravating activity and supporting the thumb and wrist.
Orthopedic Test Source Case: 28 Test or topic: DE QUERVAIN TENOSYNOVITIS NPLEX Examination Trap Excessive force during Finkelstein testing can cause pain even in an unaffected wrist.
70

Carpal Tunnel Syndrome

6 questions · Physical Medicine · Orthopedic source case 29

Clinical Case
A 51-year-old patient reports nocturnal numbness affecting the thumb, index, and middle fingers. Shaking the hand temporarily relieves the symptoms.
Question 1 of 6NPLEX-PM-315

Which test is most appropriate?

Answer and Clinical Rationale

Correct answer: B. Phalen test
Explanation Phalen testing increases pressure within the carpal tunnel by sustained wrist flexion.
Question 2 of 6NPLEX-PM-316

What constitutes a positive Phalen test?

Answer and Clinical Rationale

Correct answer: A. Median-distribution paresthesia
Explanation Reproduction of numbness or tingling in the median-nerve distribution supports carpal tunnel syndrome.
Question 3 of 6NPLEX-PM-317

Which additional test may reproduce the symptoms?

Answer and Clinical Rationale

Correct answer: A. Tinel test at the wrist
Explanation Tapping over the median nerve at the carpal tunnel may reproduce distal paresthesia.
Question 4 of 6NPLEX-PM-318

Which finger is generally spared?

Answer and Clinical Rationale

Correct answer: D. Little finger
Explanation The little finger is supplied primarily by the ulnar nerve.
Question 5 of 6NPLEX-PM-319

Which finding indicates advanced neuropathy?

Answer and Clinical Rationale

Correct answer: A. Thenar atrophy and thumb weakness
Explanation Thenar wasting and impaired thumb opposition indicate motor involvement.
Question 6 of 6NPLEX-PM-320

Progressive weakness requires:

Answer and Clinical Rationale

Correct answer: B. Electrodiagnostic evaluation or referral
Explanation Motor loss or persistent sensory impairment warrants assessment of severity and possible decompression.
Orthopedic Test Source Case: 29 Test or topic: CARPAL TUNNEL SYNDROME NPLEX Examination Trap A negative Phalen test does not exclude carpal tunnel syndrome.
71

Ulnar Neuropathy at the Elbow

6 questions · Physical Medicine · Orthopedic source case 30

Clinical Case
A 47-year-old patient reports numbness of the little finger and ulnar half of the ring finger, especially after prolonged elbow flexion. Grip strength has gradually decreased.
Question 1 of 6NPLEX-PM-321

Which test may reproduce the symptoms?

Answer and Clinical Rationale

Correct answer: A. Tinel test at the cubital tunnel
Explanation Tapping over the ulnar nerve behind the medial epicondyle may reproduce distal paresthesia.
Question 2 of 6NPLEX-PM-322

What constitutes a positive result?

Answer and Clinical Rationale

Correct answer: A. Tingling into the fourth and fifth digits
Explanation Paresthesia radiating through the ulnar distribution supports ulnar-nerve irritation.
Question 3 of 6NPLEX-PM-323

Which activity commonly aggravates cubital tunnel syndrome?

Answer and Clinical Rationale

Correct answer: A. Prolonged elbow flexion
Explanation Elbow flexion narrows the cubital tunnel and increases tension on the ulnar nerve.
Question 4 of 6NPLEX-PM-324

Which motor finding may develop?

Answer and Clinical Rationale

Correct answer: A. Intrinsic-hand weakness
Explanation The ulnar nerve supplies many intrinsic muscles of the hand.
Question 5 of 6NPLEX-PM-325

Which differential diagnosis should be considered?

Answer and Clinical Rationale

Correct answer: A. C8–T1 radiculopathy
Explanation Lower cervical radiculopathy may produce similar sensory and motor findings.
Question 6 of 6NPLEX-PM-326

Progressive weakness and muscle wasting require:

Answer and Clinical Rationale

Correct answer: B. Prompt neurological assessment
Explanation Progressive motor loss suggests significant nerve compression requiring timely investigation.
Orthopedic Test Source Case: 30 Test or topic: ULNAR NEUROPATHY AT THE ELBOW NPLEX Examination Trap Tinel testing identifies nerve irritability but does not independently determine the compression level or severity.
72

Digital Retinacular Test

6 questions · Physical Medicine · Orthopedic source case 31

Clinical Case
A 46-year-old patient presents with pain, swelling, and restricted movement of the right ring finger following immobilization. The proximal interphalangeal joint does not flex normally when the metacarpophalangeal joint is extended.
Question 1 of 6NPLEX-PM-327

Which test is most appropriate?

Answer and Clinical Rationale

Correct answer: C. Retinacular test
Explanation The retinacular test evaluates whether limited proximal interphalangeal flexion is caused by tightness of the oblique retinacular ligament or joint-capsule restriction.
Question 2 of 6NPLEX-PM-328

How is the test performed?

Answer and Clinical Rationale

Correct answer: A. Compare PIP flexion with the MCP joint extended and flexed
Explanation The examiner compares proximal interphalangeal flexion while changing the metacarpophalangeal-joint position.
Question 3 of 6NPLEX-PM-329

PIP flexion improves when the MCP joint is flexed. What does this suggest?

Answer and Clinical Rationale

Correct answer: A. Retinacular-ligament tightness
Explanation Improvement when the MCP joint is flexed suggests that tension in the retinacular structures is limiting movement.
Question 4 of 6NPLEX-PM-330

PIP flexion remains restricted in both positions. What is more likely?

Answer and Clinical Rationale

Correct answer: A. Fixed joint-capsule restriction
Explanation Persistent limitation regardless of MCP position suggests intrinsic PIP joint or capsular restriction.
Question 5 of 6NPLEX-PM-331

Which history increases the likelihood of this problem?

Answer and Clinical Rationale

Correct answer: A. Prolonged finger immobilization
Explanation Immobilization may lead to shortened soft tissues and joint contracture.
Question 6 of 6NPLEX-PM-332

Which finding warrants imaging or specialist assessment?

Answer and Clinical Rationale

Correct answer: B. Fixed deformity after significant trauma
Explanation Fixed deformity following trauma may reflect fracture, tendon disruption, or joint injury.
Orthopedic Test Source Case: 31 Test or topic: DIGITAL RETINACULAR TEST NPLEX Examination Trap The retinacular test differentiates soft-tissue tightness from fixed joint restriction; it does not diagnose carpal tunnel syndrome.
73

Elbow Medial-Ligament Injury

6 questions · Physical Medicine · Orthopedic source case 32

Clinical Case
A 22-year-old baseball pitcher develops medial elbow pain after a forceful throw. Examination shows tenderness along the medial joint line.
Question 1 of 6NPLEX-PM-333

Which test assesses the medial elbow ligament complex?

Answer and Clinical Rationale

Correct answer: A. Valgus stress test
Explanation Valgus stress evaluates the ulnar, or medial, collateral ligament.
Question 2 of 6NPLEX-PM-334

How is valgus stress applied?

Answer and Clinical Rationale

Correct answer: A. Stabilize the humerus and force the forearm laterally
Explanation A valgus force opens the medial elbow joint and stresses the ulnar collateral ligament.
Question 3 of 6NPLEX-PM-335

What constitutes a positive result?

Answer and Clinical Rationale

Correct answer: A. Medial pain or excessive laxity
Explanation Medial joint-line pain or increased opening compared with the other side supports ligament injury.
Question 4 of 6NPLEX-PM-336

Which activity commonly stresses this ligament?

Answer and Clinical Rationale

Correct answer: A. Repetitive overhead throwing
Explanation Throwing creates substantial valgus force across the medial elbow.
Question 5 of 6NPLEX-PM-337

Which nerve may produce symptoms near the medial elbow?

Answer and Clinical Rationale

Correct answer: A. Ulnar nerve
Explanation The ulnar nerve passes behind the medial epicondyle and may be irritated with medial elbow pathology.
Question 6 of 6NPLEX-PM-338

Acute instability after trauma requires:

Answer and Clinical Rationale

Correct answer: C. Imaging and specialist assessment
Explanation Significant laxity after acute trauma may indicate a major ligament injury or associated fracture.
Orthopedic Test Source Case: 32 Test or topic: ELBOW MEDIAL-LIGAMENT INJURY NPLEX Examination Trap Medial pain during valgus stress may arise from ligament injury, flexor-pronator pathology, or ulnar-nerve irritation.
74

Elbow Lateral-Ligament Injury

6 questions · Physical Medicine · Orthopedic source case 33

Clinical Case
A 36-year-old patient falls on an outstretched hand. The elbow subsequently feels unstable during pushing activities. Tenderness is greatest along the lateral joint line.
Question 1 of 6NPLEX-PM-339

Which test assesses the lateral elbow ligament complex?

Answer and Clinical Rationale

Correct answer: D. Varus stress test
Explanation Varus stress evaluates the lateral collateral-ligament complex.
Question 2 of 6NPLEX-PM-340

What constitutes a positive result?

Answer and Clinical Rationale

Correct answer: A. Lateral pain or excessive opening
Explanation Lateral joint-line pain or increased laxity compared with the opposite elbow suggests lateral ligament injury.
Question 3 of 6NPLEX-PM-341

Which mechanism may cause this injury?

Answer and Clinical Rationale

Correct answer: A. Fall on an outstretched hand
Explanation A fall can transmit varus or rotational forces through the elbow.
Question 4 of 6NPLEX-PM-342

Which finding raises concern for fracture?

Answer and Clinical Rationale

Correct answer: A. Focal bony tenderness with reduced motion
Explanation Acute trauma with focal bony tenderness and restricted motion warrants fracture evaluation.
Question 5 of 6NPLEX-PM-343

Which initial study is most appropriate when fracture is suspected?

Answer and Clinical Rationale

Correct answer: A. Plain elbow radiographs
Explanation Plain radiographs are the initial imaging study for most suspected elbow fractures.
Question 6 of 6NPLEX-PM-344

What should be avoided before fracture is excluded?

Answer and Clinical Rationale

Correct answer: C. Repeated forceful stress testing
Explanation Repeated stress may worsen pain, instability, or displacement.
Orthopedic Test Source Case: 33 Test or topic: ELBOW LATERAL-LIGAMENT INJURY NPLEX Examination Trap Always compare laxity with the unaffected side and interpret it in the context of the injury mechanism.
75

FABER Test

6 questions · Physical Medicine · Orthopedic source case 34

Clinical Case
A 48-year-old patient reports deep right groin pain and reduced hip mobility. The hip is placed in flexion, abduction, and external rotation with the ankle resting above the opposite knee.
Question 1 of 6NPLEX-PM-345

Which test is being performed?

Answer and Clinical Rationale

Correct answer: A. FABER test
Explanation FABER represents flexion, abduction, and external rotation and is also called the Patrick test.
Question 2 of 6NPLEX-PM-346

Groin pain during the test most strongly suggests:

Answer and Clinical Rationale

Correct answer: A. Hip-joint pathology
Explanation Anterior groin pain during FABER more strongly implicates the hip joint.
Question 3 of 6NPLEX-PM-347

Posterior pain near the sacroiliac region suggests:

Answer and Clinical Rationale

Correct answer: A. Sacroiliac-region pathology
Explanation Posterior pain may arise from the sacroiliac region, although FABER is not independently diagnostic.
Question 4 of 6NPLEX-PM-348

Which finding should be compared bilaterally?

Answer and Clinical Rationale

Correct answer: A. Knee-to-table distance
Explanation Increased knee-to-table distance may reflect restricted hip mobility or pain.
Question 5 of 6NPLEX-PM-349

Which condition may restrict passive hip movement?

Answer and Clinical Rationale

Correct answer: A. Hip osteoarthritis
Explanation Hip osteoarthritis commonly causes pain and reduced internal rotation and flexion.
Question 6 of 6NPLEX-PM-350

Inability to bear weight after a fall requires:

Answer and Clinical Rationale

Correct answer: B. Urgent fracture evaluation
Explanation Inability to bear weight after trauma raises concern for hip or pelvic fracture.
Orthopedic Test Source Case: 34 Test or topic: FABER TEST NPLEX Examination Trap Interpret pain location—groin pain favors the hip, while posterior pain may implicate the sacroiliac region.
76

Gaenslen Test

6 questions · Physical Medicine · Orthopedic source case 35

Clinical Case
A 39-year-old patient reports unilateral pain near the posterior superior iliac spine. One hip is maximally flexed while the opposite leg is extended beyond the examination table.
Question 1 of 6NPLEX-PM-351

Which test is being performed?

Answer and Clinical Rationale

Correct answer: B. Gaenslen test
Explanation The Gaenslen test applies torsional stress across the pelvis and sacroiliac joints.
Question 2 of 6NPLEX-PM-352

What constitutes a positive result?

Answer and Clinical Rationale

Correct answer: A. Familiar sacroiliac-region pain
Explanation Reproduction of familiar posterior pelvic pain supports sacroiliac-region involvement.
Question 3 of 6NPLEX-PM-353

Which structure is principally stressed?

Answer and Clinical Rationale

Correct answer: A. Sacroiliac joint
Explanation Opposing hip flexion and extension produce torsional stress across the sacroiliac joints.
Question 4 of 6NPLEX-PM-354

Which condition contraindicates forceful testing?

Answer and Clinical Rationale

Correct answer: A. Suspected pelvic fracture
Explanation Pelvic trauma or suspected fracture must be evaluated before stress testing.
Question 5 of 6NPLEX-PM-355

Which statement is most accurate?

Answer and Clinical Rationale

Correct answer: B. A cluster of provocation tests is more informative
Explanation No single sacroiliac provocation test is sufficiently definitive when used alone.
Question 6 of 6NPLEX-PM-356

Fever with severe sacroiliac pain requires evaluation for:

Answer and Clinical Rationale

Correct answer: A. Septic sacroiliitis
Explanation Fever and severe focal pain raise concern for infection and require urgent assessment.
Orthopedic Test Source Case: 35 Test or topic: GAENSLEN TEST NPLEX Examination Trap Sacroiliac tests reproduce pain but do not independently establish the exact pathological process.
77

Yeoman Test

6 questions · Physical Medicine · Orthopedic source case 36

Clinical Case
A 44-year-old patient reports unilateral posterior pelvic pain. While prone, the examiner flexes the knee and extends the hip while stabilizing the pelvis.
Question 1 of 6NPLEX-PM-357

Which test is being performed?

Answer and Clinical Rationale

Correct answer: D. Yeoman test
Explanation The Yeoman test stresses the sacroiliac region by extending the hip with the knee flexed.
Question 2 of 6NPLEX-PM-358

Posterior pelvic pain suggests:

Answer and Clinical Rationale

Correct answer: A. Sacroiliac-region involvement
Explanation Pain localized over the sacroiliac region may indicate irritation of that joint or its supporting structures.
Question 3 of 6NPLEX-PM-359

Anterior thigh tightness during the test may reflect:

Answer and Clinical Rationale

Correct answer: A. Rectus femoris tightness
Explanation Knee flexion with hip extension stretches the rectus femoris.
Question 4 of 6NPLEX-PM-360

Which feature makes the test unsafe?

Answer and Clinical Rationale

Correct answer: A. Suspected hip or pelvic fracture
Explanation Forceful hip extension should be avoided when fracture or severe acute injury is suspected.
Question 5 of 6NPLEX-PM-361

Which additional test may assess the sacroiliac region?

Answer and Clinical Rationale

Correct answer: A. Gaenslen test
Explanation Gaenslen testing is another sacroiliac provocation maneuver.
Question 6 of 6NPLEX-PM-362

Which finding requires urgent evaluation?

Answer and Clinical Rationale

Correct answer: B. Severe pain with fever
Explanation Severe pelvic pain with fever raises concern for infection.
Orthopedic Test Source Case: 36 Test or topic: YEOMAN TEST NPLEX Examination Trap Anterior thigh discomfort may arise from muscle stretching rather than sacroiliac pathology.
78

Thomas Test

6 questions · Physical Medicine · Orthopedic source case 37

Clinical Case
A 36-year-old runner reports anterior hip tightness and increased lumbar lordosis. While supine, the patient flexes one hip fully toward the chest. The opposite thigh rises from the table.
Question 1 of 6NPLEX-PM-363

Which test is being performed?

Answer and Clinical Rationale

Correct answer: B. Thomas test
Explanation The Thomas test assesses hip-flexion contracture.
Question 2 of 6NPLEX-PM-364

What constitutes a positive result?

Answer and Clinical Rationale

Correct answer: A. Opposite thigh rises from the table
Explanation Elevation of the opposite thigh indicates inability of that hip to extend fully.
Question 3 of 6NPLEX-PM-365

Which muscle is commonly implicated when the thigh rises?

Answer and Clinical Rationale

Correct answer: A. Iliopsoas
Explanation Iliopsoas tightness or contracture limits hip extension.
Question 4 of 6NPLEX-PM-366

The thigh remains flat, but the knee extends substantially. Which muscle may be tight?

Answer and Clinical Rationale

Correct answer: A. Rectus femoris
Explanation Rectus femoris crosses both the hip and knee; tightness may cause loss of knee flexion during the test.
Question 5 of 6NPLEX-PM-367

Why must the lumbar spine be observed?

Answer and Clinical Rationale

Correct answer: A. Lumbar extension may mask hip-flexion tightness
Explanation Anterior pelvic tilt and lumbar extension may compensate for limited hip extension.
Question 6 of 6NPLEX-PM-368

Which intervention is generally appropriate for uncomplicated muscle tightness?

Answer and Clinical Rationale

Correct answer: A. Graded stretching and corrective exercise
Explanation Progressive flexibility and strengthening may address uncomplicated hip-flexor tightness.
Orthopedic Test Source Case: 37 Test or topic: THOMAS TEST NPLEX Examination Trap Stabilize the pelvis; otherwise lumbar extension can conceal the true hip restriction.
79

Ober Test

6 questions · Physical Medicine · Orthopedic source case 38

Clinical Case
A 29-year-old distance runner reports lateral hip and lateral knee pain. While side-lying, the upper hip is extended and abducted, then allowed to adduct toward the table.
Question 1 of 6NPLEX-PM-369

Which test is being performed?

Answer and Clinical Rationale

Correct answer: B. Ober test
Explanation The Ober test assesses flexibility of the iliotibial band and tensor fasciae latae.
Question 2 of 6NPLEX-PM-370

What constitutes a positive result?

Answer and Clinical Rationale

Correct answer: A. The thigh remains abducted
Explanation Failure of the thigh to adduct toward the table suggests iliotibial-band or tensor fasciae latae tightness.
Question 3 of 6NPLEX-PM-371

Which tissue is principally assessed?

Answer and Clinical Rationale

Correct answer: A. Iliotibial band and tensor fasciae latae
Explanation These lateral structures resist hip adduction when shortened.
Question 4 of 6NPLEX-PM-372

Why should the pelvis be stabilized?

Answer and Clinical Rationale

Correct answer: A. Pelvic rotation may create a false-negative result
Explanation Pelvic tilting or rotation can permit apparent adduction despite persistent tissue tightness.
Question 5 of 6NPLEX-PM-373

Which condition may be associated with a tight iliotibial band?

Answer and Clinical Rationale

Correct answer: A. Lateral knee pain in runners
Explanation Iliotibial-band–related pain commonly occurs over the lateral femoral epicondyle during repetitive running.
Question 6 of 6NPLEX-PM-374

Which initial management is appropriate?

Answer and Clinical Rationale

Correct answer: A. Load modification and hip-strengthening program
Explanation Management may include temporary load adjustment and progressive hip-abductor and lower-limb rehabilitation.
Orthopedic Test Source Case: 38 Test or topic: OBER TEST NPLEX Examination Trap A positive Ober test identifies restricted lateral-tissue flexibility, not necessarily the sole cause of the patient’s pain.
80

Trendelenburg Test

6 questions · Physical Medicine · Orthopedic source case 39

Clinical Case
A 67-year-old patient has a waddling gait and difficulty standing on the right leg. During right single-leg stance, the left side of the pelvis drops.
Question 1 of 6NPLEX-PM-375

Which test is positive?

Answer and Clinical Rationale

Correct answer: C. Trendelenburg test
Explanation Contralateral pelvic drop during single-leg stance constitutes a positive Trendelenburg test.
Question 2 of 6NPLEX-PM-376

Which side has the primary hip-abductor dysfunction?

Answer and Clinical Rationale

Correct answer: B. Right side
Explanation The hip abductors of the stance leg normally keep the opposite side of the pelvis level.
Question 3 of 6NPLEX-PM-377

Which muscles are principally assessed?

Answer and Clinical Rationale

Correct answer: A. Gluteus medius and minimus
Explanation Gluteus medius and minimus provide frontal-plane pelvic stability.
Question 4 of 6NPLEX-PM-378

Which nerve supplies these muscles?

Answer and Clinical Rationale

Correct answer: A. Superior gluteal nerve
Explanation The superior gluteal nerve innervates gluteus medius, gluteus minimus, and tensor fasciae latae.
Question 5 of 6NPLEX-PM-379

Which condition may produce a positive test?

Answer and Clinical Rationale

Correct answer: A. Hip osteoarthritis with abductor inhibition
Explanation Hip pain, abductor tendon disease, neurological injury, or postoperative weakness may impair abductor function.
Question 6 of 6NPLEX-PM-380

What is appropriate when weakness is progressive and unexplained?

Answer and Clinical Rationale

Correct answer: B. Neurological and hip evaluation
Explanation Progressive weakness requires assessment for tendon, joint, or neurological disease.
Orthopedic Test Source Case: 39 Test or topic: TRENDELENBURG TEST NPLEX Examination Trap The pelvis drops on the unsupported side, but the weakness is usually on the stance side.
81

Ely Test

6 questions · Physical Medicine · Orthopedic source case 40

Clinical Case
A 35-year-old cyclist reports anterior thigh tightness. While prone, the examiner passively flexes the knee. The ipsilateral hip rises from the table and the pelvis tilts anteriorly.
Question 1 of 6NPLEX-PM-381

Which test is being performed?

Answer and Clinical Rationale

Correct answer: A. Ely test
Explanation The Ely test assesses rectus femoris tightness or contracture.
Question 2 of 6NPLEX-PM-382

What constitutes a positive result?

Answer and Clinical Rationale

Correct answer: A. Ipsilateral hip rises during knee flexion
Explanation A tight rectus femoris pulls the pelvis anteriorly and causes hip flexion as the knee is flexed.
Question 3 of 6NPLEX-PM-383

Why does knee flexion stress the rectus femoris?

Answer and Clinical Rationale

Correct answer: A. It crosses both the hip and knee
Explanation The rectus femoris extends the knee and flexes the hip, so knee flexion lengthens it across the knee.
Question 4 of 6NPLEX-PM-384

Which test also helps evaluate hip-flexor tightness?

Answer and Clinical Rationale

Correct answer: A. Thomas test
Explanation The Thomas test evaluates hip-flexion contracture and may help differentiate iliopsoas from rectus femoris restriction.
Question 5 of 6NPLEX-PM-385

Which observation improves accuracy?

Answer and Clinical Rationale

Correct answer: A. Stabilize and monitor the pelvis
Explanation Pelvic movement may compensate for muscle tightness and obscure the result.
Question 6 of 6NPLEX-PM-386

Which intervention is appropriate for uncomplicated rectus femoris tightness?

Answer and Clinical Rationale

Correct answer: A. Graded stretching and movement correction
Explanation Progressive stretching and correction of contributing movement patterns are generally appropriate.
Orthopedic Test Source Case: 40 Test or topic: ELY TEST NPLEX Examination Trap Hip elevation—not anterior thigh sensation alone—is the important positive finding.
82

Hibb Test

6 questions · Physical Medicine · Orthopedic source case 41

Clinical Case
A 42-year-old patient reports unilateral posterior pelvic pain. While prone, the examiner flexes the knee to 90 degrees and moves the lower leg laterally, producing internal rotation of the hip.
Question 1 of 6NPLEX-PM-387

Which test is being performed?

Answer and Clinical Rationale

Correct answer: B. Hibb test
Explanation The Hibb test uses internal hip rotation to assess the hip and sacroiliac region.
Question 2 of 6NPLEX-PM-388

Posterior sacroiliac-region pain suggests:

Answer and Clinical Rationale

Correct answer: A. Sacroiliac dysfunction
Explanation Posterior pain may indicate irritation of the sacroiliac joint or surrounding structures.
Question 3 of 6NPLEX-PM-389

Groin pain during the maneuver suggests:

Answer and Clinical Rationale

Correct answer: A. Intra-articular hip pathology
Explanation Groin pain with hip rotation more strongly suggests pathology within the hip joint.
Question 4 of 6NPLEX-PM-390

Which finding makes this test inappropriate?

Answer and Clinical Rationale

Correct answer: A. Suspected hip fracture
Explanation Forceful hip rotation must be avoided until fracture or dislocation has been excluded.
Question 5 of 6NPLEX-PM-391

Which additional test may help distinguish hip from sacroiliac pain?

Answer and Clinical Rationale

Correct answer: A. FABER test
Explanation The location of pain during FABER testing may help differentiate hip-joint from sacroiliac-region pathology.
Question 6 of 6NPLEX-PM-392

Severe groin pain with inability to bear weight requires:

Answer and Clinical Rationale

Correct answer: B. Urgent imaging
Explanation Severe pain and inability to bear weight raise concern for fracture or major hip pathology.
Orthopedic Test Source Case: 41 Test or topic: HIBB TEST NPLEX Examination Trap Interpret the location of reproduced pain; groin and posterior pelvic pain suggest different sources.
83

Nachlas Test

6 questions · Physical Medicine · Orthopedic source case 42

Clinical Case
A 38-year-old patient reports anterior thigh discomfort and intermittent low-back pain. While prone, passive knee flexion brings the heel toward the buttock and reproduces the symptoms.
Question 1 of 6NPLEX-PM-393

Which test is being performed?

Answer and Clinical Rationale

Correct answer: A. Nachlas test
Explanation The Nachlas test uses prone knee flexion to stress the femoral nerve, upper lumbar roots, and anterior thigh structures.
Question 2 of 6NPLEX-PM-394

Anterior thigh radiating pain suggests irritation involving:

Answer and Clinical Rationale

Correct answer: A. Femoral nerve or upper lumbar roots
Explanation Femoral neural tension may reproduce symptoms in the anterior thigh.
Question 3 of 6NPLEX-PM-395

Local anterior-thigh tightness without neurological symptoms may indicate:

Answer and Clinical Rationale

Correct answer: A. Rectus femoris tightness
Explanation Prone knee flexion lengthens the rectus femoris and may reproduce muscular tightness.
Question 4 of 6NPLEX-PM-396

Low-back pain during the maneuver may reflect:

Answer and Clinical Rationale

Correct answer: A. Lumbar or sacroiliac-region irritation
Explanation The maneuver may extend the lumbar spine or stress the pelvic region.
Question 5 of 6NPLEX-PM-397

Which test also evaluates rectus femoris tightness?

Answer and Clinical Rationale

Correct answer: A. Ely test
Explanation The Ely test assesses pelvic and hip movement during passive knee flexion.
Question 6 of 6NPLEX-PM-398

Progressive quadriceps weakness with a reduced patellar reflex requires:

Answer and Clinical Rationale

Correct answer: B. Neurological evaluation
Explanation These findings may indicate significant femoral neuropathy or L3–L4 nerve-root dysfunction.
Orthopedic Test Source Case: 42 Test or topic: NACHLAS TEST NPLEX Examination Trap Anterior thigh stretching alone does not establish femoral neuropathy.
84

Pediatric Hip Instability

6 questions · Physical Medicine · Orthopedic source case 43

Clinical Case
A 6-week-old infant is examined during a routine visit. One hip has limited abduction, and the thigh creases appear asymmetric.
Question 1 of 6NPLEX-PM-399

Which test attempts to reduce a dislocated infant hip?

Answer and Clinical Rationale

Correct answer: A. Ortolani test
Explanation The Ortolani maneuver attempts to reduce a dislocated femoral head into the acetabulum.
Question 2 of 6NPLEX-PM-400

What constitutes a positive Ortolani test?

Answer and Clinical Rationale

Correct answer: A. Palpable reduction clunk
Explanation A distinct palpable clunk as the femoral head reduces is clinically significant.
Question 3 of 6NPLEX-PM-401

Which condition is being assessed?

Answer and Clinical Rationale

Correct answer: A. Developmental dysplasia of the hip
Explanation Ortolani testing is used during infancy to assess developmental hip instability.
Question 4 of 6NPLEX-PM-402

Which imaging study is preferred in a young infant?

Answer and Clinical Rationale

Correct answer: A. Hip ultrasonography
Explanation Ultrasonography evaluates the cartilaginous infant hip before the femoral head is adequately ossified.
Question 5 of 6NPLEX-PM-403

A soft click without femoral-head movement is:

Answer and Clinical Rationale

Correct answer: B. Less specific than a true clunk
Explanation Benign soft-tissue clicks may occur and are not equivalent to a reduction clunk.
Question 6 of 6NPLEX-PM-404

A positive Ortolani test requires:

Answer and Clinical Rationale

Correct answer: B. Prompt pediatric orthopedic referral
Explanation Early specialist management improves hip development and long-term outcomes.
Orthopedic Test Source Case: 43 Test or topic: PEDIATRIC HIP INSTABILITY NPLEX Examination Trap A true palpable clunk—not an isolated click—is the important positive finding.
85

ACL Injury

6 questions · Physical Medicine · Orthopedic source case 44

Clinical Case
A 24-year-old soccer player plants the right foot and changes direction. The knee gives way, followed by rapid swelling and difficulty continuing play.
Question 1 of 6NPLEX-PM-405

Which test is most appropriate?

Answer and Clinical Rationale

Correct answer: A. Lachman test
Explanation The Lachman test is a principal examination for anterior cruciate ligament integrity.
Question 2 of 6NPLEX-PM-406

What constitutes a positive Lachman test?

Answer and Clinical Rationale

Correct answer: A. Increased anterior translation with a soft endpoint
Explanation Excessive anterior tibial translation with a soft or absent endpoint suggests ACL insufficiency.
Question 3 of 6NPLEX-PM-407

Which mechanism is most consistent with ACL injury?

Answer and Clinical Rationale

Correct answer: A. Noncontact pivot with the foot planted
Explanation Sudden deceleration, pivoting, or landing may rupture the ACL.
Question 4 of 6NPLEX-PM-408

Rapid swelling most likely represents:

Answer and Clinical Rationale

Correct answer: A. Hemarthrosis
Explanation Rapid post-traumatic swelling suggests bleeding into the joint.
Question 5 of 6NPLEX-PM-409

Which additional test assesses the ACL?

Answer and Clinical Rationale

Correct answer: A. Anterior drawer test
Explanation The anterior drawer test also assesses anterior tibial translation, although acute guarding may reduce sensitivity.
Question 6 of 6NPLEX-PM-410

Which next step is appropriate?

Answer and Clinical Rationale

Correct answer: A. Assess fracture risk, then arrange indicated imaging and follow-up
Explanation Acute knee trauma requires fracture assessment, management of swelling and instability, and appropriate imaging or referral.
Orthopedic Test Source Case: 44 Test or topic: ACL INJURY NPLEX Examination Trap Lachman testing is generally more sensitive than anterior drawer testing for ACL injury.
86

PCL Injury

6 questions · Physical Medicine · Orthopedic source case 45

Clinical Case
A 29-year-old driver strikes the proximal tibia against the dashboard during a collision. The knee is swollen and painful posteriorly.
Question 1 of 6NPLEX-PM-411

Which ligament is most likely injured?

Answer and Clinical Rationale

Correct answer: D. PCL
Explanation A posterior force applied to the proximal tibia with the knee flexed is a classic mechanism for PCL injury.
Question 2 of 6NPLEX-PM-412

Which test is most appropriate?

Answer and Clinical Rationale

Correct answer: C. Posterior drawer test
Explanation Posterior drawer testing assesses posterior tibial translation and PCL integrity.
Question 3 of 6NPLEX-PM-413

What constitutes a positive result?

Answer and Clinical Rationale

Correct answer: A. Excessive posterior tibial translation
Explanation Increased posterior movement compared with the opposite knee suggests PCL insufficiency.
Question 4 of 6NPLEX-PM-414

What should be observed before performing the test?

Answer and Clinical Rationale

Correct answer: A. Posterior tibial sag
Explanation A ruptured PCL may allow the tibia to sag posteriorly at rest.
Question 5 of 6NPLEX-PM-415

Which mechanism can also injure the PCL?

Answer and Clinical Rationale

Correct answer: A. Fall onto a flexed knee
Explanation Direct force through the proximal tibia of a flexed knee can produce posterior displacement.
Question 6 of 6NPLEX-PM-416

Knee trauma with absent distal pulses requires:

Answer and Clinical Rationale

Correct answer: B. Urgent vascular assessment
Explanation Major knee trauma may injure the popliteal artery and threaten the limb.
Orthopedic Test Source Case: 45 Test or topic: PCL INJURY NPLEX Examination Trap Check for posterior sag before interpreting anterior drawer testing, because a sagging tibia can create misleading anterior translation.
87

Meniscal Injury

6 questions · Physical Medicine · Orthopedic source case 46

Clinical Case
A 37-year-old patient twists the knee while squatting. The patient reports joint-line pain, intermittent catching, and delayed swelling.
Question 1 of 6NPLEX-PM-417

Which test is most appropriate?

Answer and Clinical Rationale

Correct answer: A. McMurray test
Explanation McMurray testing evaluates the menisci by combining knee movement with tibial rotation and joint-line loading.
Question 2 of 6NPLEX-PM-418

What constitutes a positive result?

Answer and Clinical Rationale

Correct answer: A. Joint-line pain or a palpable click
Explanation Reproduction of joint-line pain or a palpable click supports meniscal pathology.
Question 3 of 6NPLEX-PM-419

Which test also assesses the meniscus while the patient is prone?

Answer and Clinical Rationale

Correct answer: A. Apley compression test
Explanation Apley compression combines axial loading with tibial rotation to stress the menisci.
Question 4 of 6NPLEX-PM-420

Pain with compression greater than distraction suggests:

Answer and Clinical Rationale

Correct answer: A. Meniscal pathology
Explanation Compression loads the menisci, whereas distraction places more stress on the collateral ligaments.
Question 5 of 6NPLEX-PM-421

Which symptom suggests a displaced meniscal tear?

Answer and Clinical Rationale

Correct answer: A. True mechanical locking
Explanation Inability to fully extend the knee because of a mechanical block may indicate a displaced tear.
Question 6 of 6NPLEX-PM-422

A persistently locked knee requires:

Answer and Clinical Rationale

Correct answer: B. Prompt orthopedic assessment
Explanation A displaced meniscal fragment or another intra-articular loose body may require urgent management.
Orthopedic Test Source Case: 46 Test or topic: MENISCAL INJURY NPLEX Examination Trap A click without pain may be nonspecific; correlate it with joint-line symptoms and mechanical complaints.
88

Collateral-Ligament Differentiation

6 questions · Physical Medicine · Orthopedic source case 47

Clinical Case
A 31-year-old skier sustains a blow to the lateral side of the right knee. Pain and tenderness are localized medially.
Question 1 of 6NPLEX-PM-423

Which ligament is most likely injured?

Answer and Clinical Rationale

Correct answer: C. MCL
Explanation A lateral force creates valgus stress and may injure the medial collateral ligament.
Question 2 of 6NPLEX-PM-424

Which test is most appropriate?

Answer and Clinical Rationale

Correct answer: A. Valgus stress test
Explanation Valgus stress evaluates the medial collateral ligament.
Question 3 of 6NPLEX-PM-425

What constitutes a positive result?

Answer and Clinical Rationale

Correct answer: A. Medial pain or excessive opening
Explanation Medial joint-line pain or increased valgus laxity supports MCL injury.
Question 4 of 6NPLEX-PM-426

Testing at approximately 30 degrees of knee flexion better isolates:

Answer and Clinical Rationale

Correct answer: A. MCL
Explanation Slight flexion reduces the stabilizing contribution of the joint capsule and helps isolate the MCL.
Question 5 of 6NPLEX-PM-427

Marked laxity in full extension suggests:

Answer and Clinical Rationale

Correct answer: A. Injury involving additional stabilizers
Explanation Instability in full extension raises concern for more extensive capsular or cruciate-ligament injury.
Question 6 of 6NPLEX-PM-428

Which force assesses the LCL?

Answer and Clinical Rationale

Correct answer: A. Varus stress
Explanation Varus stress opens the lateral joint and assesses the lateral collateral ligament.
Orthopedic Test Source Case: 47 Test or topic: COLLATERAL-LIGAMENT DIFFERENTIATION NPLEX Examination Trap Laxity in full extension suggests a more extensive injury than isolated collateral-ligament damage.
89

Small Knee Effusion

6 questions · Physical Medicine · Orthopedic source case 48

Clinical Case
A 45-year-old patient develops mild knee swelling after a long hike. There is no major trauma, instability, or inability to bear weight.
Question 1 of 6NPLEX-PM-429

Which test best detects a small effusion?

Answer and Clinical Rationale

Correct answer: A. Bulge test
Explanation The bulge test is used to detect a small amount of intra-articular fluid.
Question 2 of 6NPLEX-PM-430

How is the test performed?

Answer and Clinical Rationale

Correct answer: A. Milk fluid medially, then tap the lateral joint
Explanation Fluid is moved from one side of the joint and observed returning as a medial bulge.
Question 3 of 6NPLEX-PM-431

What constitutes a positive result?

Answer and Clinical Rationale

Correct answer: A. Visible medial fluid wave
Explanation Reappearance of a medial fluid bulge indicates a small effusion.
Question 4 of 6NPLEX-PM-432

Which test is more useful for a large effusion?

Answer and Clinical Rationale

Correct answer: A. Patellar ballottement test
Explanation A large effusion may cause the patella to float and tap against the femur when compressed.
Question 5 of 6NPLEX-PM-433

A hot, swollen knee with fever raises concern for:

Answer and Clinical Rationale

Correct answer: A. Septic arthritis
Explanation Septic arthritis requires urgent joint aspiration and treatment.
Question 6 of 6NPLEX-PM-434

Which test is definitive for evaluating suspected septic arthritis?

Answer and Clinical Rationale

Correct answer: A. Synovial-fluid analysis
Explanation Arthrocentesis with cell count, crystal analysis, Gram stain, and culture is required.
Orthopedic Test Source Case: 48 Test or topic: SMALL KNEE EFFUSION NPLEX Examination Trap Identifying an effusion does not determine its cause.
90

Patellar Instability

6 questions · Physical Medicine · Orthopedic source case 49

Clinical Case
A 19-year-old patient reports that the kneecap shifted laterally while turning. Examination reveals tenderness along the medial patellar border and fear of recurrent displacement.
Question 1 of 6NPLEX-PM-435

Which test is most appropriate?

Answer and Clinical Rationale

Correct answer: A. Patellar apprehension test
Explanation The patellar apprehension test assesses lateral patellar instability.
Question 2 of 6NPLEX-PM-436

How is the test performed?

Answer and Clinical Rationale

Correct answer: A. Translate the patella laterally
Explanation Gentle lateral translation attempts to reproduce apprehension associated with patellar instability.
Question 3 of 6NPLEX-PM-437

What constitutes a positive result?

Answer and Clinical Rationale

Correct answer: A. Apprehension or quadriceps guarding
Explanation Fear, guarding, or an attempt to stop the maneuver indicates instability.
Question 4 of 6NPLEX-PM-438

Which structure is often injured during lateral dislocation?

Answer and Clinical Rationale

Correct answer: A. Medial patellofemoral ligament
Explanation The medial patellofemoral ligament is a principal restraint to lateral patellar displacement.
Question 5 of 6NPLEX-PM-439

Which imaging may be appropriate after acute traumatic dislocation?

Answer and Clinical Rationale

Correct answer: A. Knee radiographs
Explanation Radiographs assess alignment and possible osteochondral fracture.
Question 6 of 6NPLEX-PM-440

A locked knee after patellar dislocation raises concern for:

Answer and Clinical Rationale

Correct answer: A. Osteochondral loose body
Explanation An osteochondral fragment may create a mechanical block and requires prompt assessment.
Orthopedic Test Source Case: 49 Test or topic: PATELLAR INSTABILITY NPLEX Examination Trap Apprehension—not pain alone—is the principal positive finding.
91

Patellofemoral Pain

6 questions · Physical Medicine · Orthopedic source case 50

Clinical Case
A 28-year-old runner reports anterior knee pain aggravated by stairs, squatting, and prolonged sitting. There is no instability or large effusion.
Question 1 of 6NPLEX-PM-441

Which test may reproduce patellofemoral pain?

Answer and Clinical Rationale

Correct answer: A. Patellofemoral grind test
Explanation The patellofemoral grind test loads the patellofemoral articulation during quadriceps contraction.
Question 2 of 6NPLEX-PM-442

What constitutes a positive result?

Answer and Clinical Rationale

Correct answer: A. Familiar retropatellar pain
Explanation Reproduction of the patient’s familiar anterior or retropatellar pain is the relevant finding.
Question 3 of 6NPLEX-PM-443

Why must the test be interpreted cautiously?

Answer and Clinical Rationale

Correct answer: A. It may cause discomfort in asymptomatic knees
Explanation Patellar compression may be uncomfortable even without clinically important disease.
Question 4 of 6NPLEX-PM-444

Which symptom pattern supports patellofemoral pain?

Answer and Clinical Rationale

Correct answer: A. Pain with stairs and prolonged sitting
Explanation Loading a flexed knee during stairs, squatting, or prolonged sitting commonly aggravates patellofemoral pain.
Question 5 of 6NPLEX-PM-445

Which initial intervention is appropriate?

Answer and Clinical Rationale

Correct answer: A. Hip and knee strengthening with load modification
Explanation Progressive hip and quadriceps strengthening and temporary activity modification are commonly recommended.
Question 6 of 6NPLEX-PM-446

Which finding requires investigation for another diagnosis?

Answer and Clinical Rationale

Correct answer: B. Hot swollen knee with fever
Explanation Fever with an acutely hot swollen joint raises concern for septic arthritis.
Orthopedic Test Source Case: 50 Test or topic: PATELLOFEMORAL PAIN NPLEX Examination Trap A positive grind test alone does not establish patellofemoral cartilage damage.

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