The tendon of the middle finger of the index finger at the joint of the back of the hand is cut off that is the tendon rupture of the finger, which needs surgical treatment and postoperative plaster fixation. 1. Tendon rupture on the back of the hand is usually caused by trauma, such as cutting, tearing and so on, for fresh trauma, usually as early as possible to carry out a one-stage repair surgery, the earlier the surgery, the better the healing of the tendon. Clean up the wound, find the severed end of the tendon, and use surgical thread to sew up the severed tendon. After sewing up the tendon, put the injured limb in a plaster cast and restrict the activity of the affected limb to avoid the tendon that has been sewed up from tearing again. 2. For old injuries, a second stage of repair is needed depending on the functional requirements. 3. Postoperative prophylactic use of antibiotics to fight infection. For those who are sensitive to pain, analgesics such as ibuprofen can be added. 4. After surgical suture, it is necessary to use plaster or aluminum plate for fixation and recuperation for 4~6 weeks, and one week after surgery, it can be used for light passive activities. Of course, patients with finger tendon rupture, to the hospital in time for treatment, and actively cooperate with the doctor for rehabilitation rupture.