Muscles that move the radius and ulna (Forearm extensors)

Forearm extensors


Triceps brachii
O・・・Infraglenoid tubercle (Long head), Posterolateral surface of humerus (Lateral head), Posterior surface of humerus (Medial head)
I・・・Olecranon process of ulna
A・・・Extends forearm, extends and adducts arm
N・・・Radial nerve

Anconeus
O・・・Lateral epicondyle of humerus
I・・・Lateral surface of oreclanon process, superior portion of posterior surface of ulna
A・・・Extends forearm
N・・・Radial nerve