Pronator Teres

Musculus pronator teres

Upper Body ArmsForearms

Pronator teres is the main fast pronator of the forearm, turning the palm downward and assisting weakly with elbow flexion. It is loaded by pronation-resisted curls and any movement that drives the palm from supinated toward pronated under load. The median nerve passes between its two heads, where it can be compressed in pronator teres syndrome.

Actions

Forearm pronation, Weak elbow flexion

Origin

Humeral head from the medial epicondyle (common flexor tendon) and medial supracondylar ridge; ulnar head from the coronoid process of the ulna

Insertion

Lateral surface of the middle of the radius (pronator tuberosity)

Innervation

Median nerve (C6-C7)

Blood supply

Ulnar and radial arteries (anterior ulnar recurrent artery)

Heads

Humeral head, Ulnar head

Wikipedia ↗

forearmpronatorelbow