Limb MSK Assessment Reference

Normal range of movement + special tests to rule fracture/injury in or out
Special tests support clinical decision-making but don't replace imaging where indicated. Validated clinical decision rules (Ottawa Ankle/Knee/Wrist) have genuine sensitivity for fracture exclusion — the rest are orthopaedic special tests for soft tissue injury, useful for narrowing differentials, not fracture-grade rule-out.
Shoulder

Normal ROM

Flexion~180°
Extension~50-60°
Abduction~180°
Adduction~50°
Internal rotation~70-90°
External rotation~90°

Special tests

  • Apprehension / Relocation test
    Abduct + externally rotate arm at 90°; patient apprehensive/resists = positive.
    Rules in: anterior shoulder instability/dislocation.
  • Empty can test (Jobe's)
    Arms abducted 90°, thumbs down, resist downward pressure.
    Rules in: supraspinatus tear/impingement.
  • Drop arm test
    Passively abduct arm to 90°, ask patient to slowly lower — sudden drop/pain = positive.
    Rules in: significant rotator cuff tear.
  • Neer's / Hawkins-Kennedy
    Neer's: passively flex arm fully overhead with scapula stabilised. Hawkins: flex to 90°, internally rotate.
    Rules in: subacromial impingement.
  • Cross-body adduction test
    Passively adduct arm across chest.
    Rules in: AC joint pathology.
  • Palpation + active ROM
    Bony tenderness over clavicle, acromion, proximal humerus; gross deformity, inability to actively move.
    Best prehospital fracture flag — no validated clinical decision rule exists for shoulder like Ottawa rules; low threshold to immobilise + convey/image if deformity, crepitus, or refusal to move.
Elbow

Normal ROM

Flexion~140-150°
Extension0° (full)
Pronation~80-90°
Supination~80-90°

Special tests

  • Elbow Extension Test clinical rule
    Patient fully extends elbow actively (seated, arms out). Can they fully extend without pain?
    Rules out: fracture with good NPV (~95-98% in studies) if full painless extension achieved — reasonable prehospital fracture-exclusion tool, best evidence in adults; use caution in children/high-energy trauma.
  • Golfer's/Tennis elbow tests
    Resisted wrist flexion (medial epicondylitis) / resisted wrist extension (lateral epicondylitis) reproduces pain at epicondyle.
    Rules in: epicondylitis, not fracture-relevant.
  • Varus/Valgus stress test
    Stabilise humerus, apply varus/valgus force at ~20-30° flexion.
    Rules in: collateral ligament instability.
  • Palpation
    Radial head, olecranon, medial/lateral epicondyles — bony point tenderness + effusion (fat pad sign equivalent) raises fracture suspicion, especially radial head in FOOSH mechanism.
Wrist / Hand

Normal ROM (wrist)

Flexion~80°
Extension~70°
Radial deviation~20°
Ulnar deviation~30-35°

Special tests / clinical rules

  • Ottawa Wrist / Distal Radius reasoning
    Less formalised than ankle/knee, but same logic: bony tenderness distal radius/ulna, inability to bear weight through hand, visible deformity.
    Rules in need for imaging: point bony tenderness or deformity.
  • Anatomical snuffbox tenderness
    Palpate snuffbox (base of thumb) after FOOSH.
    Rules in: high suspicion scaphoid fracture — notoriously occult on initial X-ray; immobilise and refer even with normal imaging if clinically suspicious.
  • Scaphoid compression / axial thumb loading
    Axial pressure along thumb metacarpal reproducing wrist pain.
    Adds to: scaphoid fracture suspicion.
  • Finkelstein's test
    Thumb tucked into fist, ulnar-deviate wrist.
    Rules in: De Quervain's tenosynovitis — not fracture relevant.
  • Tinel's / Phalen's test
    Tinel's: tap over carpal tunnel. Phalen's: wrists flexed together 60 sec.
    Rules in: carpal tunnel/median nerve compression — relevant post-fracture neuro check too.
Hip

Normal ROM

Flexion~120°
Extension~20-30°
Abduction~45°
Adduction~25-30°
Internal rotation~35-40°
External rotation~45°

Special tests

  • Log roll test
    Passively internally/externally rotate the extended leg — pain with gentle rotation.
    Rules in: intracapsular hip fracture — one of the most sensitive bedside tests for occult NOF#, low false-negative rate.
  • Leg length + rotation deformity (inspection)
    Classic shortened, externally rotated leg.
    Rules in: displaced NOF fracture — but absence doesn't exclude undisplaced/impacted fracture.
  • Axial loading / heel strike test
    Gentle percussion/thump to heel with leg extended, or axial load through femur.
    Rules in: occult hip/femoral fracture if pain reproduced at hip.
  • FABER (Patrick's) test
    Flexion-Abduction-External Rotation, ankle on opposite knee, gentle downward pressure on flexed knee.
    Rules in: hip joint or SI joint pathology — not fracture-specific.
  • Weight-bearing assessment
    Can they straight-leg raise / weight bear at all, even partially?
    Inability to weight bear post-fall in elderly = high suspicion NOF# regardless of exam findings; low threshold to treat as fracture and convey accordingly.
Knee

Normal ROM

Flexion~135-150°
Extension0° (full, some have 5-10° hyperextension normally)

Ottawa Knee Rule validated clinical decision rule

X-ray indicated if ANY of the following present, in patients with acute knee injury:
  • Age ≥ 55 years
  • Isolated tenderness of patella
    No tenderness elsewhere on knee
  • Tenderness at head of fibula
  • Inability to flex knee to 90°
  • Inability to bear weight both immediately AND in the ED/on scene
    4 steps, regardless of limping
High sensitivity (~97-100%) for clinically significant fracture — well validated for prehospital/ED use, ages 2-55 in some versions (paediatric variants exist, use clinical judgement under 18).

Ligamentous/meniscal special tests

  • Anterior/Posterior drawer test
    Knee flexed 90°, draw tibia forward (ACL) or push backward (PCL).
    Rules in: ACL/PCL laxity.
  • Lachman's test
    Knee flexed ~20-30°, stabilise femur, pull tibia forward.
    Rules in: ACL tear — more sensitive than drawer test.
  • Varus/Valgus stress test
    Apply varus/valgus stress at 0° and 30° flexion.
    Rules in: collateral ligament (LCL/MCL) injury.
  • McMurray's test
    Flex knee fully, rotate tibia while extending, palpate for click/pain along joint line.
    Rules in: meniscal tear — not fracture relevant.
  • Patellar tap / ballottement
    Milk fluid down thigh, push patella down onto femur.
    Rules in: joint effusion/haemarthrosis — significant effusion post-trauma raises fracture/ligament rupture suspicion.
Ankle / Foot

Normal ROM

Dorsiflexion~20°
Plantarflexion~40-50°
Inversion~30-35°
Eversion~15-20°

Ottawa Ankle Rule validated clinical decision rule

Ankle X-ray indicated only if pain in malleolar zone AND any of:
  • Bone tenderness at posterior edge/tip of lateral malleolus
    Distal 6cm
  • Bone tenderness at posterior edge/tip of medial malleolus
    Distal 6cm
  • Inability to weight bear
    4 steps, both immediately after injury and on assessment
Sensitivity approaching 100% for fracture — one of the best-validated prehospital-transferable rules; significantly reduces unnecessary imaging when correctly applied.

Ottawa Foot Rule validated clinical decision rule

Foot X-ray indicated if pain in midfoot zone AND any of:
  • Bone tenderness at base of 5th metatarsal
  • Bone tenderness at navicular
  • Inability to weight bear
    4 steps, immediately and on assessment

Other special tests

  • Squeeze test (Hopkins)
    Squeeze tibia/fibula together mid-calf, away from injury site.
    Rules in: syndesmosis (high ankle sprain) injury if pain at ankle referred distally.
  • External rotation (Kleiger's) test
    Stabilise tibia, externally rotate foot with knee flexed 90°.
    Rules in: syndesmotic injury / deltoid ligament injury.
  • Anterior drawer test (ankle)
    Stabilise tibia, draw calcaneus/foot forward.
    Rules in: ATFL laxity/rupture.
  • Talar tilt test
    Invert the calcaneus with ankle in neutral.
    Rules in: CFL/lateral ligament complex injury.