The rotator cuff
is made up of four muscles that surround the humerus (upper arm bone). The rotator cuff works in concert with the labrum, joint capsule, and ligaments serving as dynamic stabilizers and movers of the shoulder joint.
Shoulder tendonitis or inflammation is common from overuse injuries
or biomechanical faults and can be a component of rotator cuff issues. Shoulder pain and shoulder weakness are common with rotator cuff injuries. Simple activities such as putting on a coat, brushing your hair, or opening a heavy door can become painful.
Overhead activities such as baseball, tennis, volleyball, and weight training are typical contributors to this overuse injury. Slips and falls can also cause acute injury to the shoulder.