Abstract
Endoscopic carpal tunnel release has been shown to decrease postoperative recovery time in patients undergoing surgery for carpal tunnel syndrome. There is, however, some controversy concerning the safety and reliability of the procedure. We performed endoscopic carpal tunnel release utilizing the two portal technique described by Chow on 20 fresh cadaver specimens. There were no injuries noted in any of the vital structures including the ulnar artery, superficial palmar arch, third common digital nerve or flexor tendons. The transverse carpal ligament was found to be completely transected in 95% of the specimens. Hyperextension of the wrist significantly displaces the vital structures both dorsally and distally. The use of a slotted cannula and specially designed blades protect the surrounding structures during the procedure. Based on this study, endoscopic carpal tunnel release using the technique described by Chow may be performed reliably without injury to any of the vital structures.
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