Nerves of Forearm (Left)

Description

The nerve supply for the forearm can be divided into superficial (or cutaneous) and deep innervation. Cutaneous innervation comprises the following nerves:

—lateral cutaneous nerve of the forearm (C5, C6), which innervates skin of the lateral side of the forearm to the proximal thumb;

—medial cutaneous nerve of the forearm (C8, T1), which innervates the skin of the medial side of the forearm;

—posterior cutaneous nerve of the forearm (C8, T1), which innervates the skin of the back of the forearm.

The deep innervation of the forearm comprises the following nerves:

—median nerve, which gives off motor branches to most of the flexor muscles of the forearm;

—ulnar nerve, which provides motor innervation to medial flexor digitorum profundus and flexor carpi ulnaris muscles;

—radial nerve, which innervates the extensor muscles of the forearm.