Also found in: Dictionary.
origin, back of lateral condyle of humerus; insertion, olecranon process and posterior surface of ulna; action, extends forearm and abducts ulna in pronation of wrist; nerve supply, radial.
Etymology: Gk, agkon, elbow
one of seven superficial muscles of the posterior forearm. A small triangular muscle, it originates on the dorsal surface of the lateral condyle of the humerus and inserts in the olecranon. It functions to extend the forearm and abduct the ulna in pronation.
anconeusMusculus anconeus [NA6].
Extends elbow and abducts ulna in pronation.
Posterior surface of the lateral epicondyle of humerus and adjacent capsule of elbow joint.
Olecranon process and posterior surface of ulna.
Tricep extension with a resistance band.
anconeus(ang-kō′nē-ŭs) [L. fr. Gr. ankōn, elbow]
The short extensor muscle of the forearm, located on the back of the elbow. It arises from the back portion of the lateral epicondyle of the humerus, and its fibers insert on the side of the olecranon and upper fourth of the shaft of the ulna. It extends the forearm and stabilizes the ulna in pronation of the wrist.