The policy of “prevention first” should be implemented in the treatment. If the small splint or plaster is too tight, it should be loosened immediately, otherwise the consequences will be serious. If the brachial artery is injured, there is ischemic contracture, the radial artery pulsation is weakened or disappeared, and the hand is cold and painful, the brachial artery should be explored immediately, and treatment should be made according to the situation. If there is thrombosis, resection should be made to repair the blood vessel. If there is vasospasm, saline should be used to dilate the blood vessel. If the blood vessel is broken, the blood vessel should be repaired by butt-end anastomosis or autologous vein graft. In advanced cases, the fingers (thumbs) and wrist joints are severely affected by flexion deformity and inward deformity of the thumb (Fig. 3-14). Treatment involves automatic and passive straightening activities, use of straightened interphalangeal joints, strong spring splints for the abducted thumb and extensor carpi ulnaris; exploration of the median and ulnar nerves if necessary, lengthening of the flexor tendons, and consideration of reinforcement with the radial extensor carpi radialis longus muscle, as well as removal of the proximal row of carpal bones.