Instability of the shoulder

What is instability? Instability means the humerus (ball) slips out of the glenoid (socket). This can occur from an injury and is then called a dislocation (dislocated shoulder). If the dislocation occurs repeatedly, it will lead to arthritis unless the instability is corrected. A less severe form of instability is called subluxation,   where the

Chronic Shoulder Instability

The shoulder is the most moveable joint in your body. It helps you to lift your arm, to rotate it, and to reach up over your head. It is able to turn in many directions. This greater range of motion, however, can cause instability. Shoulder instability occurs when the head of the upper arm bone