3% Postoperative mean symptom severity score: 1.32 ± 0.27 and functional status score): 1.10 ± 0.17 with mean follow - up duration 12.47 monthsConclusion: Standard open carpal tunnel release by dividing flexor retinaculum is stil good efficacy for carpal tunnel decompression and symptoms relief significantlyBy applying the Boston questionnaire, we can quantify the improvements of clinical complaints postoperatively