often require surgery because the supraspinatus tendon (or one of the other rotator cuff tendons) becomes detached from the humerus (upper arm bone) bone's head and can't heal itself without ...

These muscles work together to keep the head of the humerus firmly within the shallow socket of the shoulder, allowing for ...

The rotator cuff consist of four muscles within the shoulder, connecting the upper arm (humerus ... (from your tailbone to the back of your head) on a 3-foot long, 6-inch thick foam roller.