Whether a rotator cuff injury can heal on its own depends on the severity of the condition. If the injury is mild, it may heal on its own with rest and braking; if the injury is severe, it usually does not heal on its own. If the patient is young and the rotator cuff injury is mild, the injury may heal itself after enough time for reasonable rest and local braking. If the rotator cuff injury is caused by strenuous pulling, etc., and the symptoms are severe, for example, with organic changes such as tendon rupture, it usually does not heal on its own. It needs to be treated by removing the cause, such as surgical repair of the tendon, in order to heal effectively. When rotator cuff injury is clearly recognized, it is important to choose the appropriate treatment under the guidance of a doctor and actively treat it.