Pronators and Supinators of the Forearm

1. Pronators

1.1. Innervated by the Median Nerve

2. Supinators

2.1. Innervated by the radial nerve

3. Inserts on the lateral surface of radius

3.1. Pronator Teres

3.1.1. Originates on the anterior surface of distal 1/4 of ulna.

3.2. Pronator Quadratus

3.2.1. Originates on the medial epicondyle

3.3. Supinator

3.3.1. Originates on the lateral epicondyle of humerus and the supinator crest of ulna.