The rotator cuff is a common structure of injury in the shoulder. The “cuff” itself is composed of four different muscles and a few connective tissues which make a continuous connection around your shoulder joint (Asghar, Ghosh, and Narayan 2020). The four muscles are:

The shoulder is one of the most commonly injured joints in the body, and this is no coincidence. It is one of the most mobile joints in the body, with a huge range of motion, and many muscle attachments.