IRCT20141121020020N8 IRCT 2021-09-21 Babol University of Medical Sciences Comparison of long term effectiveness of open surgery versus ultrasound guided median nerve hydrodissection in terms of symptoms , function and electrophysiological studies in patients with Canal Tunnel syndrome( CTS) Comparison of long term effectiveness of open surgery versus ultrasound guided median nerve hydrodissection in terms of symptoms , function and electrophysiological studies in patients with Canal Tunnel syndrome( CTS) 2021-08-23 anticipated 40 Complete https://irct.ir/trial/57800 interventional Randomization: Randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Randomization description: In this study, random allocation is done in random blocks with block size 4 and block number 10. Thus, based on AABB letter permutations, we produce a list of 40 letters A and B and assign them to patients, respectively. N/A Carpal tunnel syndrome. Intervention 1: We create a distal meter to the wrist in the direction of the fourth finger. After removing the adipose tissue and aponeurosis, we release the distal end of the transverse ligament. Then, this ligament formsIt is cut lengthwise from the distal to the proximal to show the median nerve. Intervention 2: Intervention group: The second group, with the help of median nerve ultrasound from forearm to wrist under CFT ligament(Common Flexor Tendon) is specified. With the help of a special block needle that can be detected by sonography (Sonovisible needle), it is guided directly from the ulnar wrist under the CFT and by slow injection of the fluid combination with local anesthesia of bupivacaine and depomedrol, the median nerve is separated from the CFT. No - There is not a plan to make this available Justification or reason for not sharing IPD is There are no plans to publish it yet.