In clinical practice, when a patient has a dislocation of the acromioclavicular joint, surgical treatment is performed by incision and internal fixation. How long it takes to move after fixation depends on the age of the patient and the degree of recovery. If the dislocation occurs in a young person or an adult, you can start to move the shoulder properly about four weeks after surgery to avoid shoulder stiffness or shoulder muscle atrophy. If the dislocation of the acromioclavicular joint occurs in an elderly person, it takes about six weeks after surgery to start appropriate activities because the bones of the elderly are prone to osteoporosis and the condition takes longer to recover. In addition, it is best to carry out proper rehabilitation training under the guidance of a rehabilitation doctor when the patient is moving around to avoid accidents.