Anconeus
Arms
- Origin
- Back of the lateral epicondyle of the humerus
- Insertion
- Side of the olecranon and upper back surface of the ulna
- Action
- Assists the triceps in extending the elbow; steadies the elbow joint
- Nerve supply
- Radial nerve (C7–C8)
A small triangular muscle at the back of the elbow that looks like a continuation of the triceps. It helps straighten the elbow.
Anconeus anatomy page →