Shoulder joints attached. It is caused by membranes around the shoulder joints becoming inflamed, adhering to, and division forming fibrosis. Abnormal tissue results in less mobility in the shoulder joint and pain or caused by causes inside the shoulder joint such as torn ligaments. Bones grow inside the shoulder joint, etc.
Treatment
Treatment in shoulder joints is often used physical therapy machine with mobility technique to stretch the joints. Increases movement and exercise around the shoulder joints to restore muscle strength.