Center for Advanced Joint Replacement

About Osteoarthritis

Arthritis is not just a single disease. It is a term used to describe more than 100 different conditions that affect the joints in the body. The word arthritis actually means inflammation of a joint. Almost every animal that can walk is susceptible to this inflammation.

Although many types of arthritis have some common aspects, each type has its own pattern of symptoms and affects different people in different ways.

Two major forms of arthritis are rheumatoid arthritis and osteoarthritis. In cases of rheumatoid arthritis, the body’s immune system appears to go awry and attacks healthy parts of the body, particularly the joints. In severe rheumatoid arthritis, the joints become deformed and internal organs are adversely affected.

What is osteoarthritis?

Osteoarthritis, the most common form of arthritis, is also called degenerative joint disease or “wear and tear” arthritis. Almost everyone is affected by it to some extent as they grow older. It most frequently occurs in weight-bearing joints, mainly knees, hips and ankles.

This form of arthritis slowly and gradually breaks down the cartilage that covers the ends of each bone in a joint. Normally, cartilage acts as a shock absorber, providing a smooth surface between the bones. But with osteoarthritis, the smooth surface becomes rough and pitted. In advanced stages, it may wear away completely. Without their normal gliding surfaces, the bones grind against one another, causing inflammation, pain and restricted movement. Bone spurs may form.

In osteoarthritis of the knee, the shape of the bone and appearance of the leg may change over the years. Many people become bow-legged or knock-kneed. In osteoarthritis of the hip, the affected leg may appear shorter.

What are the symptoms of osteoarthritis?

The number-one symptom of osteoarthritis is pain. Irritation and pressure on nerve endings, as well as muscle tension and fatigue, cause the pain. The pain can progress from mild soreness and aching with movement to severe pain, even when resting.

The second symptom is loss of easy movement, such as bending or rising normally. Morning stiffness is a problem for many people. This lack of mobility, in turn, often causes the muscles serving the knee or hip to weaken, and overall body coordination suffers.

How is osteoarthritis diagnosed?

A simple weight-bearing X-ray and examination by a skilled orthopedic physician will determine if you have osteoarthritis. Time consuming and costly diagnostic procedures are not required.

How is osteoarthritis treated?

There is no cure for arthritis, but there are ways to manage the pain, lack of mobility and fatigue that are among the most disabling symptoms.

  • Hyaluronate: This treatment lubricates the knees and can reduce pain for 9–12 months. Three to five injections are given into the knee, one week apart.
  • Medicines: Coated aspirin helps relieve pain and has few side effects. Nonsteroidal, anti-inflammatory drugs, (NSAIDS), such as Voltaren, Feldene, Naprosyn and Clinoril, are prescription drugs for pain and inflammation. Cox2 NSAIDS have a lower risk of stomach ulceration and may be prescribed by your doctor. Do not take aspirin if you are taking NSAIDS.
  • Cortisone shots: Cortisone shots are given for inflammation. For many people, joint arthritis is often made symptom-free for months or even years after cortisone shots. Two to three shots a year can be given without any side effects.
  • Ice treatments: Ice packs on the knee (three times daily, 1–20 minutes at a time) are helpful for inflammation and temporary relief of pain and soreness. Heat applications in either the knee or hip make the joint feel less stiff.
  • Diet: There is no evidence that any specific foods will prevent or relieve arthritis symptoms. It’s important to keep excess weight off, however, because it aggravates arthritis by putting added pressure on the knee.
  • Exercise and rest: Prolonged rest and days of inactivity will increase stiffness and make it harder to move around. At the same time, excessive or improper exercise can overwork your arthritic joint and cause further damage. A balanced routine of rest and exercise is best. Exercise in a swimming pool can be very helpful.
  • Arthroscopy: Arthroscopic procedures may be helpful for arthritis. In some cases, a “flap” of torn knee cartilage can aggravate arthritis and cause additional pain. The cartilage flap can be removed by arthroscopy.
  • Knee or hip Replacement: Knee or hip replacement is a very effective solution to the pain and disability of advanced osteoarthritis. The rough, worn surfaces of the joint are relined with smooth-surfaced metal and plastic components, thereby resurfacing the joint.