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7327 Anatomy

A 48-year-old female piano player visited the outpatient clinic with numbness and tingling in her left hand. A diagnosis was made of nerve compression in the carpal tunnel, and the patient underwent an endoscopic nerve release. Two weeks postoperatively the patient complained of a profound weakness in the thumb, with loss of thumb opposition. The sensation to the hand, however, was unaffected. Which of the following nerves was injured during the operation?

AThe first common digital branch of the median nerve
BThe second common digital branch of the median nerve
CRecurrent branch of median nerve
DDeep branch of the ulnar nerve
Anatomy
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