In recent years, tibial plateau fracture (tibialplateaufracture) has increased, accounting for about 4% of all fractures, with comminuted fractures predominating and difficult closed repositioning, which can be complicated by meniscal and ligament injuries. Etiology: mainly caused by high-energy violence. The violence is in the form of axial pressure or hinge force, which can cause split or compression fractures of the tibial plateau, and the fractures are mostly comminuted with compression and tilting of the articular surface. Internal and external rotation or hyperextension can also result in tibial rim avulsion fractures, meniscal damage and knee instability. Manifestations: Those without displacement or with slight displacement have mild post-injury symptoms, mostly blood accumulation in the knee cavity, significant swelling, and inversion or valgus deformity of the knee. The presence of common peroneal nerve and s-vascular injury should also be noted. It is also important to note that plateau fractures can be combined with injuries to the lateral collateral ligaments, meniscus and cruciate ligaments of the knee. CT is useful for understanding the pathology of fracture displacement, and MRI can detect occult fractures, meniscal and cruciate ligament injuries. Treatment: 1. Non-surgical treatment: For type I fractures without displacement or mild displacement or type II or type III fractures with compression less than or equal to 1 cm, immobilization in a long-leg cast is used, and the corresponding inversion or eversion treatment is given according to the fracture type. Early activity under traction is also a valuable treatment for repositioning and articular surface molding. Although mild unevenness of the joint surface is often left, the force line is normal and the result is satisfactory. 2.Surgical treatment: tibial plateau fractures are intra-articular fractures, so early surgical treatment is advocated. type I to III fractures can be fixed by internal fixation with supporting plates and screws. type IV fractures are combined with intercondylar augmentation fractures and should be fixed by wire through bone tunnel at the same time. type V and VI fractures are bicondylar fractures and should be fixed by internal fixation with bone cancellous screws and bilateral supporting plates. Marginal avulsion fractures of the tibia are often complicated by ligamentous injury and instability and should be treated seriously.