The anconeus is a muscle within the superficial compartment of the posterior forearm.
- Attachments: Originates from the lateral epicondyle of the humerus and attaches to the olecranon of the ulna.
- Actions: Abduction of the ulna during pronation of the forearm. Weak extensor of the elbow.
- Innervation: Radial nerve.
- Blood supply: Profunda brachii artery