Fractures of the lower end of the radius are mostly caused by indirect violence, which occurs when the hand hits the ground during a fall and the violence is transmitted upward. It manifests as swelling and significant pressure pain at the wrist and limited movement of the hand and wrist. The majority of patients with distal radius fractures are injured by dorsal wrist extension, and most of their axial forces are transmitted to the distal radius via the central and lateral columns, through the navicular and lunar bones. Since the capitate bone is located between the navicular and lunar bones, the forces are mainly concentrated on the navicular and lunar ligaments, which easily cause navicular and lunar ligament injury and navicular and lunar separation, and the articular surface of the distal radius is often crushed. Because palmar flexion is not conducive to the repair of dorsal structures, ulnar deviation increases the separation of navicular and lunar, and strains the brachioradialis muscle, which easily causes radial displacement and is not conducive to improving the instability of the wrist joint. The main manifestations of this disease are swelling and pressure pain in the wrist, and limited movement of the hand and wrist, which have the same manifestations as many bone or joint injuries, so clinically it needs to be differentiated from many diseases, but the diagnosis can be confirmed by using X-ray examination. The differential diagnosis needs to be made with this disease: radial diaphyseal fracture: double fracture of the ulnar radial diaphyseal, which ranks second after the distal radius fracture in forearm fractures, and is one of the clinical problems because of its complicated treatment and poor prognosis. In addition to the general fracture symptoms, attention should also be paid to the presence of vascular, nerve and muscle tissue concomitant injuries, especially those who are strangled by machines, soft tissue injuries may be heavier than bone injuries, which may cause crush syndrome or ischemic contracture, etc., and must be repeatedly emphasized during clinical examination Radial neck fracture: radial neck fracture is not common, often accompanied by radial head fracture, or single, radial neck fracture is mainly due to violence The fracture of the radial neck is mainly caused by violence, when the carrying angle and elbow joint are mostly naturally turned out, the violence is transmitted from far to near along the radius to the elbow when the hand is propped up on the ground, and when it reaches the upper end of the radius, the radial head impacts with the small head of the humerus, causing the fracture of the radial head, radial neck or both. Fracture of the radial head: A fracture of the radial head is an elbow injury that occurs easily in adults, mostly during falls on flat ground or during sports, usually with mild pain symptoms. When a person falls, the elbow joint is straightened and lands on the palm of the hand outside the shoulder joint, which places the elbow joint in a strong valgus position, causing the radial head to violently strike the small head of the humerus, resulting in a radial head fracture. Wrist dislocation: Wrist dislocation is mainly due to heavy pressure on the wrist during dorsiflexion, a fall from a height or a fall with the palm of the hand supported on the ground, with violence concentrated on the cephalad lunar joint, resulting in a rupture of the dorsal palmar ligament around the cephalad lunar bone and thus a dislocation, with significant pressure pain at the injured site.