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Your shoulder is the most flexible joint in your body. It allows you to place and rotate your arm in many positions in front, above, to the side, and behind your body. This flexibility also makes your shoulder susceptible to instability and injury.
Depending on the nature of the problem, nonsurgical methods of treatment often are recommended before surgery. However, in some instances, delaying the surgical repair of a shoulder can increase the likelihood that the problem will be more difficult to treat later. Early, correct diagnosis and treatment of shoulder problems can make a significant difference in the long run.
The ball at the top end of the arm bone fits into the small socket (glenoid) of the shoulder blade to form the shoulder joint (glenohumeral joint).
The socket of the glenoid is surrounded by a soft-tissue rim (labrum).
A smooth, durable surface (articular cartilage) on the head of the arm bone, and a thin inner lining (synovium) of the joint allows the smooth motion of the shoulder joint.
The upper part of the shoulder blade (acromion) projects over the shoulder joint. One end of the collarbone is joined with the shoulder blade by the acromioclavicular (AC) joint. The other end of the collarbone is joined with the breastbone (sternum) by the sternoclavicular joint.
The joint capsule is a thin sheet of fibers that surrounds the shoulder joint. The capsule allows a wide range of motion, yet provides stability.
The rotator cuff is a group of muscles and tendons that attach your upper arm to your shoulder blade. The rotator cuff covers the shoulder joint and joint capsule.
The muscles attached to the rotator cuff enable you to lift your arm, reach overhead, and take part in activities such as throwing or swimming.
A sac-like membrane (bursa) between the rotator cuff and the shoulder blade cushions and helps lubricate the motion between these two structures.
Bursitis or Tendinitis
Bursitis or tendinitis can occur with overuse from repetitive activities, such as swimming, painting, or weight lifting. These activities cause rubbing or squeezing (impingement) of the rotator cuff under the acromion and in the acromioclavicular joint. Initially, these problems are treated by modifying the activity which causes the symptoms of pain and with a rehabilitation program for the shoulder.
Impingement and Partial Rotator Cuff Tears
The conservative nonsurgical treatment is modification of activity, light exercise, and, occasionally, a cortisone injection. Nonsurgical treatment is successful in a majority of cases. If it is not successful, surgery often is needed to remove the spurs on the underside of the acromion and to repair the rotator cuff.
Full-Thickness Rotator Cuff Tears
If pain continues, surgery may be needed to repair full- thickness rotator cuff tears. Arthroscopic techniques allow shaving of spurs, evaluation of the rotator cuff, and repair of some tears.
Both techniques require extensive rehabilitation to restore the function of the shoulder.
The two basic forms of shoulder instability are subluxations and dislocations. A subluxation is a partial or incomplete dislocation. If the shoulder is partially out of the shoulder socket, it eventually may dislocate. Even a minor injury may push the arm bone out of its socket. A dislocation is when the head of the arm bone slips out of the shoulder socket. Some patients have chronic instability. Shoulder dislocations may occur repeatedly.
Patients with repeat dislocation usually require surgery. Open surgical repair may require a short stay in the hospital. Arthroscopic surgical repair is often done on an outpatient basis. Following either procedure, extensive rehabilitation, often including physical therapy, is necessary for healing.
Fractured Collarbone and Acromioclavicular Joint Separation
Fractured Head of the Humerus (Arm Bone), or Proximal Humerus Fracture
Osteoarthritis and Rheumatoid Arthritis
- A medical history to gather information about current complaints; duration of symptoms, pain and limitations; injuries; and past treatment with medications or surgery.
- A physical examination to assess swelling, tenderness, range of motion, strength or weakness, instability, and/or deformity of the shoulder.
- Diagnostic tests, such as X-rays taken with the shoulder in various positions. Magnetic resonance imaging (MRI) may be helpful in assessing soft tissues in the shoulder. Computed tomography (CT) scan may be used to evaluate the bony parts of the shoulder.
Some surgical procedures require hospitalization for a number of days. Your doctor may discuss planning for the period after surgery. You may need to either stay in an extended care facility or have someone help you when you return home.
- No food or drink after midnight before surgery.
- Discuss with your doctor what to do about medications taken in the morning.
- An hour before surgery, you will be assessed in the preoperative area by a nurse anesthetist or anesthesiologist.
You may be given the option to have an arthroscopic procedure or an open surgical procedure.
Recovery and rehabilitation is related to the type of surgery performed inside the shoulder, rather than whether there was an arthroscopic or open surgical procedure.
There are always some risks with any surgery, even arthroscopic procedures. These include possible infection, and damage to surrounding nerves and blood vessels. However, modern surgical techniques and close monitoring have significantly minimized the occurrence of these problems.
After surgery, some pain, tenderness, and stiffness are normal. You should be alert for certain signs and symptoms that may suggest the development of complications.
- Fever after the second day following surgery
- Increasing pain or swelling
- Redness, warmth, or tenderness which may suggest a wound infection
- Unusual bleeding (some surgical wound drainage is normal and, in fact, desirable
- Numbness or tingling of the arm or hand
It is important that you continue a shoulder exercise program with daily stretching and strengthening. In general, patients who faithfully comply with the therapies and exercises prescribed by their orthopaedic surgeon and physical therapist will have the best medical outcome after surgery.
Your orthopaedic surgeon is a medical doctor with extensive training in the diagnosis and nonsurgical and surgical treatment of the musculoskeletal system, including bones, joints, ligaments, tendons, muscles, and nerves.
The American Academy of Orthopaedic Surgeons
6300 N. River Road
Rosemont, IL 60018