The shoulder is a complex structure made up of 2 joints (the glenohumeral joint and the acromioclavicular joint) and 4 muscles (converging to form the rotator cuff). Shoulder problems, caused by injury or wear and tear, can affect the joints, tendons or nerves.
Thuasne shoulder braces use the Dujarrier principle. They immobilise the arm "elbow to body": with the arm at 90° to the fore-arm.
Immobilisation has an analgesic and protective effect and allows the injury to heal.