There are many ligaments around the knee joint, and these ligaments are vital to the stability of the knee joint. The more common ones are the medial and lateral collateral ligaments and the anterior and posterior cruciate ligaments, and a break in any of these ligaments will affect the stability of the knee joint. After the stability of the knee joint is affected, if the knee joint has to walk on the ground normally, it will lead to wear and tear of the knee joint. After the wear and tear of the articular cartilage and meniscus, traumatic arthritis can occur, and the knee joint will become painful after walking on the ground more, and this pathology is irreversible, and eventually the cartilage wears away. The pain that occurs can only be solved by joint replacement surgery, so surgical repair should be actively considered after a ligament rupture, the main purpose of which is to restore the stability of the joint and avoid traumatic arthritis.