Rotator cuff pain is easily one of the commonest injuries our physios fix. In this article, we look at how so ? So what exactly is it? It is a group of four muscles that pretty much cup your shoulder. They attach in a common tendon around the shoulder joint. These muscles are called supraspinatus, infraspinatus, teres major and minor. It’s a mouthful! However, it’s important to know that they bring about all movements in your shoulder. Hence, if the rotator cuff is injured you won’t be able to move your arm!