What You Need to Know About the Rotator Cuff

The rotator cuff is a group of muscles whose job is to keep the head of your upper-arm bone (humerus) in your shoulder socket. It also aids in the raising, lowering, and rotating of your arm, keeping the shoulder stable and safe throughout these movements. There are 4 muscles that make up your rotator cuff; supraspinatus, infraspinatus, teres minor, and subscapularis.