If the leg joint is twisted to the tendon and is very painful, it needs to be determined according to the specific degree of pain. If the pain is mild, the injured joint needs to be fully relaxed and rested, and can be fixed with appropriate braces to keep the injured muscles, tendons, and ligaments in a relaxed and rested state to help recovery, and to elevate the injured position higher than the heart position to prevent swelling through gravity. If the joint sprain is very painful and swelling is obvious, it is generally considered a more serious ligament or other soft tissue injury, and it is best to perform an MRI of the area to further clarify the diagnosis and see if there is a tear or rupture. If the injury is severe, surgical suturing of the severed end may be required to maintain the stability of the joint.