Endoscopic Carpal Tunnel Release: A Retrospective Study of the Modified Okutsu Technique Using Glass Tubes
We evaluated 108 endoscopically assisted carpal tunnel releases in 90 patients in a retrospective study to determine the efficiency and safety of a modified Okutsu endoscopic carpal tunnel release (ECTR) technique. The modification consisted of the use of glass tubes 5, 7, and 9 mm in diameter and a sharp tipped hook knife. The results were evaluated using a patient questionnaire, time off from work, grip strength, and two point discrimination. Symptoms were resolved in 71% of the patients, improved in 19.4%, and not improved in 9.3%. In this series, 59 patients were gainfully employed: 84.7% returned to work, half within 2 weeks of surgery. Severe complications included one laceration of the ulnar nerve, and one neuroma in continuity of the median nerve. ECTR using this modification of Okutsu's technique is effective in the relief of symptoms and returning patients to work quickly.