Knee surgery includes the following three types of knee surgery: First, the most common knee surgery is knee fracture surgery. Knee fractures are intra-articular fractures and most require surgery to restore the anatomical structure of the knee and restore the flatness of the joint surface, the more common ones being tibial plateau fractures and distal femur fractures. Knee surgery refers to the arthroscopic treatment of the knee joint, which is also relatively common and includes surgery for meniscal injuries of the knee, surgery for cruciate ligament rupture of the knee, and surgery for lateral collateral ligament rupture of the knee. Third, knee surgery also includes joint replacement surgery of the knee, which is less common than the first two.