The shoulder muscles are responsible for maintaining the widest range of motion of any joint in your body. This flexibility is also what makes the shoulder prone to instability and injury. Muscles, ...

Four muscles and their tendons make up the rotator cuff; they smooth arm motion and stabilize the shoulder joint. The supraspinatus, infraspinatus, teres minor, and subscapularis aid the shoulder when ...

Your infraspinatus is one of the four muscles that make up your rotator cuff. It plays a part in the movement and stability of your shoulder joint. You put your shoulder muscles to the test in many ...

Saddled with shoulder discomfort or struggling to lift your arm? A rotator cuff tear could be causing your pain. "The rotator cuff is a group of four muscles and their tendons that help your shoulder ...