The rotator cuff has four main tendons:
- Teres Minor
The long head of the biceps tendon is a tendon that also crosses or enters the shoulder between these muscles and may also be injured if the rotator cuff is injured.
The rotator cuff is separated from the point of the shoulder or the acromion by a small fluid filled sac called a bursa. Bursae are normal in all people however, if we have a rotator cuff injury or a spur on the point of the shoulder / acromion, we may get inflammation within this bursar called bursitis.
Injury or wear and tear to all of these structures within the shoulder can cause pain and disability and the inability to use the shoulder.