thumb carpometacarpal arthrodesis

The wrist joint is very important for the flexibility of the hand. The wrist joints, the wrist bones, and the wrist joints are involved in the wrist joint activities. Therefore, the wrist joints are divided into: wrists (skull, boat, lunate), carpal bones (boat, moon, skull), palm (wrist and metacarpal), and full wrist fusion. Wrist joint fusion refers to full wrist fusion. The wrist fusion only retains a little flexion and extension between the carpal bones, completely losing lateral activity, and is not as stable as the full wrist fusion. Wrist bone fusion, such as boat and lunate bone injury, has been replaced by many surgical procedures. The wrist fusion is mainly used for the first metacarpal and carpal bone fusion. The functional position of the wrist joint is 20° dorsiflexion, 5°10° in the neutral position or the ruler, and the grip strength of the hand is the largest. Wrist arthrodesis should be strictly in accordance with the indications, can be solved with other surgery, try not to do fusion, only the carpal bone destruction is serious, other surgery can not restore the function, only the fusion surgery. Treatment of diseases: osteoarthritis Indication The thumb and wrist joint fixation is suitable for the pain caused by the thumb and wrist joint osteoarthritis. The first metacarpal bone is merged with the majority of the angle bone to eliminate the pain and make the hand grip strong. Surgical procedure Make a 2.5cm transverse incision at the base of the large fish muscle on the palm of your hand. If you need to reveal the L-shaped incision of the first metacarpal. The starting point of the fish muscle was exfoliated, and most of the horn and palm joints were directly exposed. The abductor longus muscle and the short flexor tendon were pulled to the temporal side, and the radial flexor carpi muscle was found to protect. The first metacarpal and the multi-corner articular surface were excised, and the K-wire was fixed at the end of the bone, or the hole was fixed with a screw and the wound was sutured.