Thumb tenosynovitis surgery is divided into closed tenotomy and open tenotomy. 1. Closed tenotomy: local anesthesia and disinfection of the surgical area of the hand, careful touching of the tenosynovitis hard nodule site, the use of a hook knife to cut the proliferation of tendon sheaths in longitudinal lines, after the incision of the patient’s activities of the thumb without jamming and popping, after disinfection and bandaging that is the completion of the operation, generally do not need sutures. This surgery is simple and fast, but the possibility of injury to the thumb flexor tendon is large, and is generally not recommended. 2. Open surgery: local anesthesia and disinfection are also needed, and a transverse incision of about one centimeter is made in the hardened part of the tenosynovitis, bluntly separating the soft tissues and revealing the tendon sheath hyperplasia, and the hyperplasia tendon sheath is cut open and partially resected under the direct vision, and the patient can move his thumb without any jamming sound, and then the surgery is completed by closing the wound after disinfection and wrapping it with a suture. Thumb tenosynovitis surgery requires patients to go to a regular hospital for medical treatment, by a specialist surgeon for surgical operation.