Why is arthroscopy necessary?

Diagnosing joint injuries and disease begins with a thorough medical history, physical examination, and usually X-rays. Additional tests such as an MRI, or CT also scan may be needed. Through the arthroscope, a final diagnosis is made which may be more accurate than through "open" surgery or from X-ray studies.

What are the joints that can be viewed with an Arthroscope?

Although the inside of nearly all joints can be viewed with an arthroscope, six joints are most frequently examined with this instrument. These include the knee, shoulder, elbow, ankle, hip, and wrist. As engineers make advances in electronic technology and orthopaedic surgeons develop new techniques, other joints may be treated more frequently in the future.

What are the conditions that can be treated by arthroscopy?

Some problems associated with arthritis also can be treated. Several disorders are treated with a combination of arthroscopic and standard surgery.

Disease and injuries can damage bones, cartilage, ligaments, muscles, and tendons. Some of the most frequent conditions found during arthroscopic examinations of joints are:

Inflammation

Synovitis - inflamed lining (synovium) in knee, shoulder, elbow, wrist, or ankle.

Injury - acute and chronic

Shoulder - rotator cuff tendon tears, impingement syndrome, and recurrent dislocations

Knee - meniscal (cartilage) tears, chondromalacia (wearing or injury of cartilage cushion), and anterior cruciate ligament tears with instability

Wrist - carpal tunnel syndrome

Loose bodies of bone and/or cartilage - knee, shoulder, elbow, ankle, or wrist

What is rotator cuff?

The rotator cuff is a band of muscles that surround the joint formed by the upper arm bone or humerus that connects to the shoulder blade or scapula. The rotator cuff is stiff enough to hold the joint together, but is also flexible enough to allow the arm to reach and lift.

Rotator cuff injuries are common among baseball pitchers, tennis players and other athletes who frequently exert an overhand throwing or swinging motion. Non-athletes who engage in frequent lifting or reaching activities, such as stacking cans on a high shelf, can also develop rotator cuff problems.

What causes shoulder problems?

Most shoulder problems are the result of overuse or traumatic injury. Athletes who participate in contact sports, such as hockey or football, often suffer shoulder injuries. Frequent lifting and repetitive arm rotation can also cause wear and tear on the shoulder. Inflammatory diseases such as arthritis and bursitis may develop over time.

What are the types and causes arthritis in the knee?

Osteoarthritis or Degenerative Joint Disease - the most common type of arthritis. Osteoarthritis is also known as “wear and tear arthritis” since the cartilage simply wears out. When cartilage wears away, bone rubs on bone causing severe pain and disability. The most frequent reason for osteoarthritis is genetic, since the durability of each individual's cartilage is based on genetics.

Trauma - can also lead to osteoarthritis. A bad fall or blow to the knee can injure the joint. If the injury does not heal properly, extra force may be placed on the joint, which over time can cause the cartilage to wear away.

Inflammatory Arthritis - swelling and heat (inflammation) of the joint lining causes a release of enzymes which soften and eventually destroy the cartilage. Rheumatoid arthritis, Lupus and psoriatic arthritis are inflammatory in nature.

What is the difference between total knee replacement and unicompartmental knee replacement?

Knee replacement is removing the edges of the joint that have been diseased by degeneration or trauma. Knee resurfacing is like a retread. The only part of the joint that is resurfaced is the side of the joint that is diseased.

What is revision knee surgery? how is it different to the knee
replacement?

Revision surgery is different in that the original components are removed and new components are implanted. The technical aspects of the surgery are more complex than the original total knee replacement. However, the preparation for surgery and hospital experience tend to be very similar to the primary knee replacement.

What happens if my knee gets infected?

If a knee is infected the patient is first given antibiotics. If the infection does not clear up, the implant will have to be taken out and the patient is scheduled for revision surgery. The original components are removed and a block of polyethylene cement treated with antibiotics (known as a “spacer block”) is inserted into the knee joint for six weeks. During this time the patient is also treated with intravenous (I.V.) antibiotics. After a minimum of six weeks, new knee components are implanted.

How is my new knee different?

You may feel some numbness in the skin around your incision. You also may feel some stiffness, particularly with excessive bending activities. Improvement of knee motion is a goal of total knee replacement, but restoration of full motion is uncommon. The motion of your knee replacement after surgery is predicted by the motion of your knee prior to surgery. Most patients can expect to nearly fully straighten the replaced knee and to bend the knee sufficiently to go up and down stairs and get in and out of a car. Kneeling is usually uncomfortable, but it is not harmful. Occasionally, you may feel some soft clicking of the metal and plastic with knee bending or walking. These differences often diminish with time and most patients find these are minor, compared to the pain and limited function they experienced prior to surgery.

Your new knee may activate metal detectors required for security in airports and some buildings. Tell the security agent about your knee replacement if the alarm is activated. Find out more from your doctor on Special precautions and special exercise programs.