A client arrives for evaluation with loss of sensation of the volar surface of the thumb, index, and middle fingers. What nerve is involved?
A. Radial nerve
B. Ulnar nerve
C. Posterior interosseous nerve
D. Median nerve
ANS: D
Sensory distribution of the median nerve is to the volar surface of the thumb, index, and middle fingers; radial half of the ring finger and dorsal surface of the index and middle fingers; and ra-dial half of the ring finger distal to the proximal interphalangeal (PIP) joints.
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