A ligament strain of more than one year should, in principle, be fully recovered and there should be no pain or joint instability or impact on function. If the ligament strain is more than one year old, there will be pain around the joint, pain will be aggravated when moving, swelling and pain will appear after moving, and in serious cases, there will be joint dysfunction or joint function will be affected, it should be considered that the ligament strain is not recovered well afterwards and there are residual sequelae. Patients are advised to go to the hospital for examination to see if the ligaments have recovered, and if they have not recovered and affected the stability of the joint, surgery is needed to repair and rebuild the ligaments. If the ligament strain is still symptomatic for more than a year, it means that the recovery is not good and there are sequelae, so further examination and treatment are needed, and the effect of recovery through daily exercise is not ideal, so you must go to the hospital for consultation.