Extensor Digitorum Communis is sometimes simply referred to as Extensor Digitorum. It is one of the extensor muscles of the wrist, found in the forearm.
- Origin – Lateral epicondyle of the humerus.
- Insertion – Splits into 4 tendons which insert to the bases of the 2nd and 3rd Phalanges of the four fingers.
- Actions – Extension of the wrist.
Extension of the fingers. - Innervation – Posterior interosseous nerve.
- Daily uses – Pulling the hand back and straightening the fingers to wave.
- Example strengthening exercises – Wrist extension using a dumbbell.
- Example stretches – Wrist extensor stretch.
- Related injuries – Tennis elbow.
- Related muscles – Extensor carpi ulnaris. Extensor carpi radialis brevis. Extensor carpi radialis longus. Extensor pollicis longus.