Anconeus

Musculus anconeus

Upper Body ArmsForearmsTriceps

Anconeus is a small triangular muscle at the back of the elbow that assists the triceps in extension and, more importantly, stabilizes the elbow and the ulna during forearm rotation. Though often grouped with the triceps functionally, it sits at the proximal posterior forearm and is engaged in pressing lockouts and any loaded elbow extension. It is not trained in isolation but contributes to elbow joint integrity under heavy load.

Actions

Assists elbow extension, Stabilizes the elbow joint, Abducts the ulna during pronation

Origin

Lateral epicondyle of the humerus

Insertion

Lateral surface of the olecranon and posterior surface of the proximal ulna

Innervation

Radial nerve (nerve to the anconeus) (C7-C8)

Blood supply

Deep brachial artery (medial collateral branch), recurrent interosseous artery

Wikipedia ↗

forearmelbowextensorstabilizer