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Inability to abduct arm at shoulder
Sensory loss over upper arm
- Nerve injured: axillary (C5, C6)
- Injury: fractured surgical neck of humerus; anterior dislocation of humeral head
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Wrist drop
Sensory loss of posterior arm, dorsal hand, and dorsal thumb
- Nerve injured: radial (C5-T1)
- Injury: fracture at midshaft of humerus; improper crutch use (with triceps weakness)
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Ape hand (loss of opposition of thumb)
Loss of lateral finger flexion
Loss of sensation of dorsal and palmar aspects of lateral 3.5 fingers & thenar eminence
- Nerve injured: proximal median (C5-T1)
- Injury: fracture of supracondylar humerus
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Ulnar deviation of wrist upon flexion
Loss of sensation of dorsal and palmar aspects of lateral 3.5 fingers
- Nerve injured: distal median ( C5-T1)
- Injury: carpal tunnel; dislocated lunate
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Loss of medial finger flexion
Radial deviation upon flexion
Sensory loss of medial 1.5 fingers and hypothenar eminence
- Nerve injured: ulnar (C8, T1)
- Injury: fracture of medial epicondyle of humerus
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Loss of finger adduction
Loss of thumb adduction
Loss of extension of 4th & 5th fingers
- Nerve injured: distal ulnar (C8, T1)
- Injury: fracture of hook of hamate (from falling on outstretched hand)
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Loss of arm abductors
Loss of arm lateral rotators
Loss of supination
(Waiter's tip)
- Nerve injured: Upper trunk of brachial plexus
- Injury: shoulder dystocia stretch head away from ipsilateral shoulder during birth or a fall)
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Sensory loss over lateral forearm
Loss of biceps, brachialis, coracobrachialis
Loss of flexion of arm at elbow
- Nerve injured: musculocutaneous (C5-C7)
- Injury: upper trunk compression
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Clawing of all digits (loss of lumbricals, forearm finger flexors, and finger extensors)
- Nerve injured: lower trunk of brachial plexus (C8, T1)
- Injury: upward pulling of arm (during birth or fall)
-
Loss of thigh adduction
Loss of sensation over medial thigh
- Nerve injured: obturator (L2-L4)
- Injury: anterior hip dislocation
-
Loss of thigh flexion and leg extension
Loss of sensation of anterior thigh and medial leg
- Nerve injured: femoral (L2-L4)
- Injury: pelvic fracture
-
Foot drop (loss of dorsiflexion)
Loss of foot eversion
Loss of toe extension
Loss of sensation over anterolateral leg and dorsal aspect of foot
- Nerve injured: common peroneal (L4-S2)
- Injury: trauma to lateral aspect of neck; fibula neck fracture
-
Loss of foot inversion
Loss of plantar flexion
Loss of toe flexion
Loss of sensation over sole of foot
- Nerve injured: tibial (L4-S2)
- Injury: knee trauma
-
Loss of thigh abduction (positive Trendelenburg)
- Nerve injured: superior gluteal (L4-S1)
- Injury: posterior hip dislocation; polio
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Can't climb stairs
Can't rise from seated position
- Nerve injured: inferior gluteal (L5-S2)
- Injury: posterior hip dislocation
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