ePlasty: Vol. 8
Anatomic Landmarks for the Radial Tunnel
Ron Hazani, MD, Nitin J. Engineer, MD, Arian Mowlavi, MD, Michael Neumeister, MD, W.P. Andrew Lee, MD, and Bradon J. Wilhelmi, MD

Division of Plastic and Reconstructive Surgery, School of Medicine, University of Louisville, Louisville, KY

This paper was presented at the American Association of Hand Surgery annual meeting, Palm Springs, CA, January 15, 2004.

Correspondence: ronmdsurg@hotmail.com

Background: The posterior interosseous nerve (PIN) can be difficult to locate within the radial tunnel. The deep branch of the radial nerve (DBRN) enters the supinator muscle after passing under the arcade of Fröhse. It courses through the superficial portion of the supinator muscle to exit distally as the PIN. Anatomic landmarks could facilitate diagnosis and treatment of radial tunnel syndrome and aid in the injection and decompression of the radial nerve. Methods: Eighteen cadaveric arms were used to identify anatomic landmarks to facilitate location of the PIN. The landmarks used include the palpable proximal radial edge of the radial head, proximally, and the mid-width of the wrist, distally. The skin was incised along this longitudinal line through the fascia. Deep within this plane the PIN was identified exiting the distal edge of the superficial portion of the supinator muscle. The proximal and distal edges of the supinator muscle were measured  .......