Orthopaedics Injury to the Ulnar nerve at the wrist causes paralysis of- A Apposition of the thumb B Abduction of the carpo-metacarpal joint of the thumb C Adduction of the thumb D Flexion of the MCP joint of the middle finger 💡 Explanation Injury to the Ulnar nerve at the wrist causes paralysis of- ✓ Correct Answer: C. Adduction of the thumb