The posterior interosseous nerve (PIN) is a nerve that is a deep motor branch of the radial nerve. It is the cause of lateral elbow pain which is very similar to another clinical condition ...

The radial nerve is located near your elbow and branches into the posterior interosseous and superficial nerves. The posterior interosseous nerve is the branch that travels deeper into your arm.

4). The muscular branch of the radial nerve known as the posterior interosseous nerve is subject to entrapment in the proximal portion of the forearm immediately distal to the elbow. The radial ...