1, partial rupture: there is no blood accumulation in the joint, the x-ray of the valgus position shows that the medial joint gap is not large, local closure, elastic bandage with pressure, early exercise of the quadriceps muscle or use the ankle long leg plaster rest fixed in the knee inversion and slightly flexed position for 3-4 weeks, after the plaster is completely dry, the quadriceps muscle exercise and walking on the ground can be started. 2. Complete rupture: In principle, surgical treatment should be performed if the ligament is ruptured, it can be directly sutured; if the bone attachment is avulsed, it can be fixed by wire penetration method or directly sutured to the periosteum and soft tissue. If there is avulsed bone fragment, it is fixed with steel wire or screw. If combined with a hemichondral injury, it should be removed. Combined anterior cruciate ligament injury should be repaired first. Postoperative plaster fixation for 4-6 weeks. 3, old injury: actively adhere to the quadriceps exercise to increase joint stability. After active exercise, the joint is still unstable and surgical repair is feasible. Replace the medial collateral ligament with broad fascia or semitendinosus, thin femoral tendon. Injuries to the lateral collateral ligament are rare and rarely require surgical treatment. 4, knee cruciate ligament injury: anterior cruciate ligament combined with tibial spine avulsion fracture, the knee can be used to extend and push back the tibia to reset, with a long leg cast fixed for 4-6 weeks. For those who fail to reset, prompt surgical repair should be performed. The fracture fragment is fixed with a wire. For simple ligament rupture, immobilize with a cast. For old injury, conservative treatment is the main treatment. If the joint is still unstable after exercise, surgical repair can be considered. The posterior cruciate ligament may not be repaired. 5. Fixation: Fix the damaged joint in a functional position with a splint or cast. Minor injuries to the lateral ankle ligament can generally be done after 3 days of functional exercise, while severe cases with bone fractures require at least 2-4 weeks. Drug treatment. Generally take external application of Wan.