The shoulder is the most moveable joint in your body. It helps you lift your arm, rotate it, and reach up over your head. It’s able to turn in many directions but, this greater range of motion, however, results in less stability.
Shoulder instability occurs when the head of the upper arm bone is forced out of the shoulder socket. This can happen as a result of a sudden injury or from overuse. Once a shoulder has dislocated, it is vulnerable to repeat episodes. When the shoulder is loose and slips out of place repeatedly, it is called chronic shoulder instability. Chronic shoulder instability is often first treated with nonsurgical options. If these options do not relieve the pain and instability, surgery may be needed.
Shoulder Impingement and Bursitis
Impingement is one of the most common causes of pain in the adult shoulder. It results from pressure on the rotator cuff from part of the shoulder blade (scapula) as the arm is lifted.
The rotator cuff is a tendon linking four muscles; these muscles cover the "ball" of the shoulder (head of the humerus). The muscles work together to lift and rotate the shoulder.
The acromion is the front edge of the shoulder blade. It sits over and in front of the humeral head. As the arm is lifted, the acromion rubs, or "impinges" on, the surface of the rotator cuff. This causes pain and limits movement.
The pain may be due to a "bursitis," or inflammation, of the bursa overlying the rotator cuff or a "tendonitis" of the cuff itself. In some circumstances, a partial tear of the rotator cuff may cause impingement pain.
The shoulder joint is the body's most mobile joint. It can turn in many directions. But, this advantage also makes the shoulder an easy joint to dislocate. A partial dislocation means the head of the upper arm bone is partially out of the socket. A complete dislocation means it is all the way out of the socket. Both partial and complete dislocation will cause pain and unsteadiness in the shoulder.
The shoulder joint can dislocate forward, backward, or downward. A common type of shoulder dislocation is when the shoulder slips forward (anterior instability). This means the upper arm bone moved forward and down out of its joint. It may happen when the arm is put in a throwing position.
We may immobilize the shoulder in a sling or other device for several weeks following treatment. Plenty of rest is needed. The sore area can be iced 3 to 4 times a day for 20-minute periods.
After the pain and swelling go down, the doctor may prescribe physical therapy for you. This will help restore the shoulder's range of motion and strengthen the muscles.
If shoulder dislocation becomes a chronic condition, a brace can sometimes help. However, if therapy and bracing fail, surgery may be needed to repair or tighten the torn or stretched ligaments that help hold the joint in place, particularly in young athletes.