Muscle
Anconeus
Assists elbow extension
High-yield
Assists triceps in extension and abducts the ulna in pronation; radial nerve.
Overview
A small triangular muscle on the posterolateral elbow that assists extension and stabilises the joint during pronation.
Reference facts
- Origin
Lateral epicondyle of the humerus
- Insertion
Olecranon and posterior surface of the proximal ulna
- Action
Assists in extending the elbow; stabilises the elbow and abducts the ulna during pronation
- Innervation
Radial nerve (C7, C8)
- Blood supply
Deep brachial / recurrent interosseous arteries