Osteoarthritis is known as the wear-and-tear arthritis. Over time, there is gradual breakdown of cartilage - the cushion that covers the tips of bones, which allows joints to move easily.

Osteoarthritis is the most common type of arthritis in the United States, affecting nearly 21 million people -- mostly middle-aged and older people.

While there isnt any single cause of osteoarthritis, there are several risk factors associated with it. These include advancing age, excess weight and obesity, and history of joint injury and/or overuse.

The knees, hips, fingers, neck, and lower back are most commonly affected by osteoarthritis. Most often, the disease develops gradually - starting as soreness or stiffness that seems more a nuisance than a medical concern.

Your doctor will take a medical history, perform a physical exam, and may order blood tests or request X-rays. You may be referred to an arthritis specialist called a rheumatologist.

Early diagnosis and treatment is the first step in successful management of osteoarthritis. The type of treatment selected depends on many factors including your age, overall health, and the severity of the arthritis.

Exercise is the most effective nondrug treatment for reducing pain and improving movement. Moderate physical activity on a regular basis helps reduce fatigue, strengthen muscles and bones, increase flexibility and stamina, and improve your general sense of wel