C-TRAC works by stretching the carpal ligament avoiding the need of surgical correction. C TRAC works on both hands, you do not need to buy one for your right hand and another for your left. The therapy takes 5 minutes, 3 times a day, for 4-6 weeks. Carpal Tunnel Syndrome patients do not need to use this wrist treatment while working or sleeping. Many physicians are recommending their patients to use this treatment before considering surgery.