The primary outcome measure is clinical improvement at one month. The Boston Carpal Tunnel Questionnaire (BCTQ) is used as the measure assessing clinical response. It is a self-administered disease-specific questionnaire for assessing severity of symptoms and functional status based on two scales. The symptom severity scale (SSS) is comprised of 11 questions, and the functional status scale (FSS) is comprised of 8 questions. The assessment of each question is on a scale of 1-5 points, in which 1 indicates no symptom, and 5 indicates severe symptoms. Each scale generates a final score (sum of individual scores divided by number of items) which ranges from 1 to 5. The evidence base of the psychometric properties indicates that the BCTQ is a valid, reliable, responsive and acceptable instrument and should be included as a primary outcome measures in CTS intervention trials. The questionnaire has Chinese validity.