Knee ligament ruptures are usually caused by strenuous exercise or severe trauma, and different treatment options should be chosen depending on the condition. If the rupture is only partial and there is no excessive blood accumulation in the joint, and the partial rupture is confirmed by X-ray or MRI, and there is no damage to the bone tissue around the joint, conservative treatment can be performed by immobilizing the ligament in a cast for 4 to 6 weeks, followed by strengthening the quadriceps and other muscle groups around the joint to improve the stability of the joint. If it is a complete rupture, it should be actively treated surgically, and the surgical method can be chosen according to the specific conditions of the lesion, such as cruciate ligament injury, repair and reconstruction of the cruciate ligament can be done, and if it is a collateral ligament injury, repair treatment can also be done, after the operation, it should still be fixed in a cast, usually for 6 weeks, after which functional exercises should be performed. If the injury is old, functional exercises for the quadriceps and other muscle groups should be actively performed to increase the normal stability of the joint. After functional exercises, if the joint is still not stable enough, it can be repaired surgically. For knee ligament rupture, it is important to go to the hospital for a thorough examination so that a reasonable treatment plan can be chosen.