One of the most common physical complaints is shoulder pain.
Your shoulder is made up of several joints combined with tendons
and muscles that allow a great range of motion in your arm.
Because so many different structures make up the shoulder, it is
vulnerable to many different problems. The rotator cuff is a
frequent source of pain in the shoulder. Your shoulder is made
up of three bones: your upper arm bone (humerus), your shoulder
blade (scapula), and your collarbone (clavicle). Your arm is
kept in your shoulder socket by your rotator cuff. These muscles
and tendons form a covering around the head of your upper arm
bone and attach it to your shoulder blade. There is a
lubricating sac called a bursa between the rotator cuff and the
bone on top of your shoulder (acromion). The bursa allows the
rotator cuff tendons to glide freely when you move your arm. The
rotator cuff is a common source of pain in the shoulder. Pain
can be the result of: - Tendinitis. The rotator cuff tendons can
be irritated or damaged.