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A 28-year-old man presents with the inability to straighten his fingers and w...
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A 28-year-old man presents with the inability to straighten his fingers and wrist. He has a history of a high-speed motorcycle crash and a humerus fracture. Upon examination: drooping of the hand, cannot extend the wrist and fingers, anaesthesia in the dorsal surface of the hand.
Which peripheral nerve is injured?
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