SHOULDER REPLACEMENT SURGERY

The 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, non surgical 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.

How the Normal Shoulder Works

The shoulder is a ball-and-socket joint. It is made up of three bones: the upper arm bone (humerus), shoulder blade (scapula) and collarbone (clavicle).
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.

SHOULDER PROBLEMS AND TREATMENTS

Treatment should begin with the most basic steps and progress to the more invasive, possibly including surgery. Not all treatments are appropriate for every patient, and you should have a discussion with your doctor to determine which treatments are appropriate for your particular situation. Following are the range of options.

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

Partial thickness rotator cuff tears can be associated with chronic inflammation and the development of spurs on the underside of the acromion or the acromioclavicular joint.

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

Full-thickness rotator cuff tears are most often the result of impingement, partial thickness rotator cuff tears, heavy lifting, or falls. Nonsurgical treatment with modification of activity is successful in a majority of cases.

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.

Instability

Instability occurs when the head of the upper arm bone is forced out of the shoulder socket. This can happen as a result of sudden injury or from overuse of the shoulder ligaments.

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 Head of the Humerus (Arm Bone), or Proximal Humerus Fracture

A fractured head of the humerus is a common result of falls on an outstretched arm, particularly by older people with osteoporosis. If fragmented or displaced, it may require open surgical repair and possibly replacement with an artificial joint (prosthesis).

Fractured Collarbone and Acromioclavicular Joint Separation

A fractured collarbone and acromioclavicular separation are common injuries of children and others who fall on the side of their shoulder when playing. Most of these injuries are treated non surgically with slings or splints. Severe displaced fractures or acromioclavicular joint separation may require surgical repair.

Osteoarthritis and Rheumatoid Arthritis

Osteoarthritis and rheumatoid arthritis can destroy the shoulder joint and surrounding tissue. They can also cause degeneration and tearing of the capsule or the rotator cuff. Osteoarthritis occurs when the articular surface of the joint wears thin. Rheumatoid arthritis is associated with chronic inflammation of the synovium lining which can produce chemicals that eventually destroy the inner lining of the joint, including the articular surface.

SHOULDER REPLACEMENT (PROCEDURE)

Shoulder replacement is recommended for patients with painful shoulders and limited motion. The treatment options are either replacement of the head of the bone or replacement of the entire socket .

ORTHOPAEDIC EVALUATION

The orthopaedic evaluation of your shoulder consists of three components:

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.
We will review the results of your evaluation with you and discuss the best treatment. If surgery is the best option , you will be explained the benefits vs potential risks and complications .

REQUEST AN EVALUATION MEETING

PREPARING FOR SURGERY

No food or drink after midnight before surgery.
Discuss with us what to do about medications taken in the morning.
Pre-anaesthetic check up prior to the surgery .
Types of Surgical Procedures

You may be given the option to have an arthroscopic procedure or an open surgical procedure.

ARTHROSCOPY

Arthroscopy allows us to insert a pencil-thin device with a small lens and lighting system into tiny incisions to look inside the joint. The images inside the joint are relayed to a TV monitor, allowing us to make a diagnosis. Other surgical instruments can be inserted to make repairs, based on what is with the arthroscope. Arthroscopy often can be done on an outpatient basis.

OPEN SURGERY

Open surgery may be necessary and, in some cases, may be associated with better results than arthroscopy. Open surgery often can be done through small incisions of just a few inches.

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.

POST SURGERY

Possible Complications After Surgery

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
Prevention of Future Problems & Summary

As you can see, the shoulder is extremely complex, with a design that provides maximum mobility and range of motion. Besides big lifting jobs, the shoulder joint is also responsible for getting the hand in the right position for any function. When you realize all the different ways and positions we use our hands every day, it is easy to understand how hard daily life can be when the shoulder isn’t working well.

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 the physical therapist will have the best medical outcome after surgery.

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