The most important reason for the inability to straighten the middle finger after total tenosynovectomy of the middle finger may be the development of adhesions after surgery. The treatment includes functional exercise, physical therapy and secondary surgery. 1. Functional exercise: If the middle finger cannot be straightened after tenosynovitis surgery, active or passive rehabilitation can be considered to strengthen the functional recovery exercise, strengthen the functional exercise of the fingers, and flex and extend the fingers as often as possible, so as to restore the function of the fingers as much as possible. If the contracture of the tendon is serious, it is necessary to consider a second operation. 2. Physiotherapy: For the adhesion of middle finger tenosynovitis after surgery, it is recommended to apply hot compresses and massage to promote the adhesion loosening. 3. Secondary surgery: If the surgery is not done thoroughly, local adhesions and narrowing of the tissues lead to the restriction of extension, secondary surgery is needed to correct the problem. Finally, it is recommended that the patient should go to the original clinic in time to find out the cause of the disease and follow the doctor’s instructions for symptomatic treatment.