Anterior Interosseous Nerve

Sunday, April 6, 2014

The anterior interosseous nerve arises from the median nerve in the upper portion of the forearm, on the ulnar side of the cubital fossa area. Then, it runs parallel to the anterior interosseous artery. Being an efferent and motor nerve, it supplies the flexor pollicis longus, the pronator quadratus, and radial part of flexor digitorum profundus muscles of the forearm. Injury or amputation by injury of the anterior interosseous nerve causes impairment and paralisis of the fingers and wrist, especially the forefinger and thumb, not being able to pinch with these fingers and twist the hand.