Upper Limb · NEET PG Preparation Anatomy
A patient sustained a mid-shaft fracture of the humerus. Examination reveals wrist drop, inability to extend the metacarpophalangeal joints, and sens…
Practice question from Upper Limb (NEET PG Preparation Anatomy), with the correct answer and a step-by-step solution.
easy · MCQ · Q-92352C
A patient sustained a mid-shaft fracture of the humerus. Examination reveals wrist drop, inability to extend the metacarpophalangeal joints, and sensory loss over the dorsolateral aspect of the hand. Which nerve is most likely injured?
- A.Ulnar nerve
- B.Median nerve
- C.Radial nerveCorrect answer
- D.Axillary nerve
Solution
The radial nerve runs in the spiral groove of the humerus directly in contact with the bone, making it highly vulnerable to mid-shaft humeral fractures. Injury causes wrist drop due to paralysis of the extensor muscles of the forearm, along with characteristic sensory deficits on the dorsum of the hand.
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