Neuromuscular Disorders USMLE Step 1 Practice Question
A 39-year-old male cyclist presents with numbness of the little finger and medial half of the ring finger following a 6-hour race. Vital signs are stable (BP 128/76, HR 82, RR 16, Temp 37°C). Examination reveals weakness of finger abduction and adduction with preserved wrist extension. Nerve conduction studies show prolonged distal latency across the elbow. Sensory examination of the lateral hand is intact. Which nerve is most likely affected?
Answer choices
- AMedian nerve
- BUlnar nerveCorrect answer
- CRadial nerve
- DLong thoracic nerve
- EAxillary nerve
- FPosterior interosseous nerve
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