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MBBS QUESTION #10178
Question 1
A fracture of the medial epicondyle of the humerus results in a claw-hand deformity with wasting of the hypothenar muscles and interossei. Which nerve is injured?
  • Median nerve
  • Ulnar nerve✔️
  • Radial nerve
  • Axillary nerve
Correct Answer Explanation
The ulnar nerve passes directly behind the medial epicondyle in the cubital tunnel, making it vulnerable to injury there; resultant loss of the interossei and hypothenar muscles produces the characteristic ulnar claw hand (hyperextension at MCP, flexion at IP joints of the ring and little fingers).