Elbow Anatomy

Posner (1998) described five areas of potential compression at the elbow; but the epicondylar groove and cubital tunnel are the most common areas. The compression may be caused by a congenitally shallow epicondylar groove, post trauma, tumours, infections and arthritic spurs.

The ulnar nerve runs behind the elbow on the inside of the arm. The humerus has a groove on the back where the nerve lies. Here the nerve can be felt as the ‘funny bone’.