Proximal to the carpal tunnel, the median nerve gives rise to a palmar branch (Figure 33-3B).
Palmar branch of the median nerve. Provides cutaneous innervation to the lateral palmar surface of the hand.
After passing through the carpal tunnel, the median nerve branches into the recurrent branch and the palmar digital branches.
Recurrent branch of the median nerve. Innervates the thenar muscles of the hand.
Palmar digital nerves. Travels along the first three digits and the lateral side of the fourth, supplying the lateral two lum-bricals, the palmar skin of the first three digits, and the lateral side of the fourth digit.
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