Anterior interosseous nerve

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Nerve: Anterior interosseous nerve

Deep palmar nerves. (Volar interosseous labeled at center top.)

Nerves of the left upper extremity. (Volar interosseus labeled at center right.)
Latin	nervus interosseus antebrachii anterior
Gray's	subject #210 938
From	Median nerve
Dorlands/Elsevier	n_05/12565977

The anterior interosseous nerve (volar interosseous nerve) is a branch of the median nerve that supplies the deep muscles on the front of the forearm, except the ulnar half of the flexor digitorum profundus.

It accompanies the anterior interosseous artery along the front of the interosseous membrane of the forearm, in the interval between the flexor pollicis longus and flexor digitorum profundus, supplying the whole of the former and the radial half of the latter, and ending below in the pronator quadratus and wrist joint.

Many texts, for simplicity's sake, consider this nerve part of the median nerve.

[edit] Innervation

The anterior interosseous nerve innervates 2.5 muscles:

flexor pollicis longus
pronator quadratus
the radial (lateral) half of flexor digitorum profundus

[edit] External links

Duke Orthopedics anterior_interosseous_branch_of_median_nerve
EatonHand ner-071
GPnotebook -2006253539 - "anterior interosseous nerve palsy"
Image (see yellow arrow under "Findings")

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.