Outcome after carpal tunnel release: effects of learning curve

Introduction In carpal tunnel release, it is yet unclear whether a learning curve exists among surgeons. The aim of our study was to investigate if outcome after carpal tunnel release is dependent on surgeon's experience and to get an impression of the learning curve for this procedure. Methods A total of 188 CTS patients underwent carpal tunnel release. Patients completed the Boston Carpal Tunnel Questionnaire at baseline and 6-8 months postoperatively together with a six-point scale for perceived improvement. Results Patients operated by an experienced resident or certified surgeon reported a favorable outcome more often than patients operated by an inexperienced resident (adjusted OR 3.23 and adjusted OR 3.16, respectively). In addition, a negative association was found between surgeon's years of experience and postoperative Symptom Severity Scale and Functional Status Scale scores. Discussion Outcome after carpal tunnel release seems to be dependent on surgical experience, and there is a learning curve in residents.