Fig. 14From: Open versus endoscopic carpal tunnel release: a systematic review and meta-analysis of randomized controlled trialsComparison of permanent nerve injury between patients who underwent ECTR and those who underwent OCTR. ECTR, endoscopic carpal tunnel release; OCTR, open carpal tunnel release; M-H, Mantel-Haenszel; CI, confidence interval; df, degrees of freedomBack to article page