NCIt definition : A small muscle in the posterior elbow that originates from the lateral epicondyle
of the humerus and attaches to the lateral surface of the olecranon of the ulna; it
functions to extend the forearm and stabilize the elbow joint.;
Alternative definition : CDISC: A muscle of the elbow, in general extending from the lateral epicondyle of
the humerus to the lateral surface of the ulnar olecranon; primary function is to
extend the forearm and stabilize the elbow joint.;