Bony landmark · Elbow

Medial epicondyle of the humerus

Epicondylus medialis humeri

The medial epicondyle is the bony knuckle on the inside of the elbow, and it stands out further than its counterpart on the outside. The common flexor tendon takes origin from it, bringing with it the muscles that curl the fingers and turn the palm down — pronator teres, flexor carpi radialis, palmaris longus, flexor carpi ulnaris and part of flexor digitorum superficialis. The ulnar nerve runs in a groove immediately behind it with almost nothing over it, which is why a knock there sends a shock into the little finger: this is the funny bone. Pain at the tendon attachment itself is commonly called golfer's elbow.