Description:
The rotator cuff provides strength and stability to the glenohumeral joint (a ball and socket joint, also referred to as the shoulder joint) and consists of four muscles: the subscapularis, the supraspinus, the infraspinus and the teres minor.
All of these muscles encompass this joint and help to control the joint during rotation. The glenohumeral joint is where the humerus (bone in upper arm) attaches to the scapula (shoulder blade).