Although the wrist joint does not bear the weight load like the lower limb joints, the wrist joint is a weight-bearing joint, and the load from the hand to the arm is transmitted through the wrist. When falling, the palm of the hand often supports the ground, and the wrist bears the impact of weight, which is very likely to lead to wrist fractures and ligament injuries. 1.Distal radius fracture and combined injury. The distal radius fracture is the most common fracture of the wrist, which is mostly treated by manipulation and plaster fixation, and most of them have obtained acceptable treatment results, but they usually leave behind wrist pain, different degrees of activity limitation and hand grip weakening, which are more likely to occur in patients with severe comminution and no good repositioning and reliable fixation. It has been estimated that up to 70% of distal radius fractures are combined with wrist instability, ligamentous injury, and damage to the triangular fibrocartilage complex. If the combined ligamentous injury, joint instability, and damage to the triangular fibrocartilage complex are not treated promptly and effectively, they are more likely to lead to chronic wrist pain and traumatic arthritis. Some distal radius fractures heal with residual radial shortening, which can result in impingement of the distal ulna and carpal bone, leading to chronic pain. For distal radius fractures, accurate repositioning, restoration of the articular surface and radial length, and reliable fixation are the keys to successful treatment. In recent years, for the combined ligament injury, joint instability and triangular fibrocartilage complex injury, it can be clearly diagnosed and repaired by the minimally invasive wrist arthroscopy technique, which is just emerging and promoted in China. 2.Fracture and necrosis of navicular bone and lunar bone. Fractures of the navicular and lunar bones are the most common. Because of the distribution of blood flow, fractures of the proximal navicular and lunar bones are prone to non-union and osteonecrosis, leading to joint instability and arthritis and long-term chronic pain. For these fractures, early and accurate repositioning, effective fixation and reasonable rehabilitation exercises can be performed by manipulation or surgery to minimize the adverse consequences. The application of minimally invasive wrist arthroscopy technology enables direct visualization of the intra-articular carpal bones and ligaments with small incisions, accurate repositioning and precise fixation under direct vision, which greatly reduces trauma and improves the accuracy of diagnosis and surgery. 3.Injury to the triangular fibrocartilage complex (TFCC), an important structure for maintaining the stability of the distal radial-ulnar joint and transmitting hand mechanics, plays a leading role in stabilizing the inferior ulnar-radial joint.TFCC injury can be caused by trauma and degeneration, chronic injury, and after injury, due to poor local blood flow and slow healing of its own fibrocartilage structure, it often becomes the cause of chronic and persistent pain in the wrist joint. Clinical manifestations are often pain and popping on the ulnar side of the wrist, pressure pain in the nasal fossa and ulnar carpal space on the ulnar side of the wrist, and often patients feel diffuse and deep pain on the ulnar side of the wrist, often accompanied by weak wrist force and reduced grip strength of the hand. Sometimes the pain may radiate to the dorsal side of the hand, or may be a burning sensation. Some patients have joint popping. For the acute stage of TFCC injury, conservative treatment such as rest, braking, swelling, physiotherapy and rehabilitation is feasible, and minimally invasive repair under arthroscopy is feasible if conservative treatment is not effective, and most of them can obtain good results. 4, lower ulnar radial joint injury. The lower ulnar radial joint is a component of the wrist joint and plays an important role in the rotational movement of the wrist and forearm. The anatomical relationship of the lower ulnar radial joint is precise, and even a small change in the anatomical relationship can lead to a significant change in the loading pattern, which not only destroys the rotational pivot of the forearm, but also affects the normal transmission of force. Clinically, distal ulnar radius fractures are often accompanied by dislocation of the inferior ulnar radial joint, and the management of the inferior ulnar radial joint has an important impact on the recovery of joint function after healing. The management of the lower ulnar radial joint can be divided into subluxation and complete subluxation, and individualized treatment is required according to the degree and direction of subluxation and the duration of subluxation to obtain the ideal clinical outcome.