|Hello << Test First Name >>The shoulder girdle is made up of 3 bones, the scapula (shoulder blade), the humerus (upper arm bone) and the clavicle (collar bone). The shoulder has the greatest range of motion of any joint in the body but this places it at the greatest risk of dislocations.
Shoulder instability is when the ball and socket joint is not controlled well. When the ball is sliding around it’s socket too much it can cause pain and in some cases come out of the socket and dislocate. Sometimes the ball does not completely dislocate and is only partially out and can feel locked. With a wiggle it often returns to its normal position. This is called subluxation.
To help improve the shoulder’s stability, the joint is supported by a thickened rim around the socket called a labrum, which deepens the shallow joint. The capsule around this joint is also reinforced by ligaments which become taught at the end range of all shoulder movements. When the ligaments become tight they also send important messages to the brain so that it can coordinate how the muscles around the shoulder move.