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Variations of the Posterior Interosseous Nerve

From the Department of Human Anatomy and the Department of Hand Surgery, Medical University of Southern Africa, Medunsa, South Africa

Correspondence: Professor Ulrich Mennen, Dept of Hand & Microsurgery, PO Box 186, Medunsa 0204, South Africa, E-mail: umennen{at}medunsa.ac.za

The posterior interosseous nerves of 58 cadaver forearms of black South Africans were dissected to study their order of branching. In 43 specimens (74%), the most common order of branching was: extensor carpi radialis brevis; supinator; extensor digitorum; extensor carpi ulnaris; extensor digiti minimi; abductor pollicis longus; extensor pollicis brevis; extensor pollicis longus and extensor indicis. In 15 specimens (26%) different variations of the nerve were observed, some of which are reported for the first time. The knowledge of these variations could be useful during operations in the vicinity of the nerve, and when repairing a nerve injury or forecasting the location of a compressive lesion.

Journal of Hand Surgery (British and European Volume), Vol. 25, No. 3, 281-282 (2000)
DOI: 10.1054/jhsb.2000.0399


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