Ulnar Nerve - Forearm

Forearm

It enters the anterior (flexor) compartment of the forearm between the humeral and ulnar heads, lying under the aponeurosis of flexor carpi ulnaris alongside the ulna. There it supplies one and a half muscles (flexor carpi ulnaris and the medial half of flexor digitorum profundus) and courses with the ulnar artery, travelling inferiorly with it deep to the flexor carpi ulnaris muscle.

In the forearm it gives off the following branches:

• Muscular branches of ulnar nerve
• Palmar branch of ulnar nerve
• Dorsal branch of ulnar nerve