ANTERIOR INTEROSSEOUS NERVE

 

ORIGIN: Median nerve

COURSE/DISTRIBUTION: This nerve arises from the back of the median nerve as that nerve escapes from the cubital fossa by passing between the two heads of the pronator teres. It is accompanied by the anterior interosseous artery and it descends with this artery to reach the upper border of the pronator quadratus lying on the interosseous membrane. It runs between the flexor digitorum profundus and the flexor pollicis longus and supplies both muscles. It then escapes under the pronator quadratus to reach the posterior compartment of forearm to supply the distal radioulnar joint and the wrist and carpal joints.

BRANCHES. It provides branches to all deep muscles of the front of forearm, such as the flexor pollicis longus, pronator quadratus, flexor digitorum profundus and also gives articular branches to the wrist joint, distal radio-ulnar and intercarpal joints.

ROOT VALUE: Refer to median nerve.

 

 

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Electronic School of Medicine
Creator: Oluwole Ogunranti


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Layers 1- skin; 2- fasciae, 3- superficial muscles, 4 -neurovascular structures, 5- deep muscles and ligaments, 6- bones

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Creator: Oluwole Ogunranti