A 38-year-old man is evaluated for tingling and numbness in the left hand. The patient has been complaining of pain for the past two months, especially at work times. He works as a car mechanic. Physical examination shows decreased sensation in the palmar side of the lateral 3 and a half digits of the left hand, thenar eminence, and the lateral palm. This patient most likely has an injury in the course of the nerve between which of the following structures?

Question

Quizplus · Accepted Answer

Eductional Objective: In the forearm the median nerve courses between the humeral and the ulnar heads of the pronator teres muscle, and between the flexor digitorum superficialis and flexor digitorum profundus. Proximal median nerve injury in the forearm leads to sensory loss in the lateral palm, thenar eminence, and palmar side of the lateral 3 and a half digits.

A 38-Year-Old Man Is Evaluated for Tingling and Numbness in the Left