Ischemic myoclonus is a serious late complication of fracture, which is a serious consequence of osteofascial compartment syndrome. Due to insufficient blood supply to the upper and lower limbs or over-tightening of bandages for more than a certain period of time, the muscles of the limbs are ischemic and necrotic, which eventually leads to mechanization and the formation of scar tissues, which are gradually contracted to form a characteristic deformity. Injury to the lower part of the brachial artery is the most common in the clinic, which occurs in children, especially in the case of supracondylar humerus fracture, and mainly causes ischemic contracture of the forearm and hand muscles, which is called Volkmann’s ischemic contracture. Injury to the middle part of the brachial artery: in addition to fractures of the humeral trunk, catheterization through the brachial artery and percutaneous puncture can also cause secondary thrombosis, resulting in the same consequences in the forearm and hand; in this case, the median nerve is also prone to dysfunction. Injury to the upper part of the brachial artery: less common than the previous two, due to the richness of the lateral branches of the vascular network of the shoulder joint, therefore, once blocked, its impact on the blood supply of the limb is less severe than that of the previous two. X-ray examination, can except the injury of bone.