The term arthritis refers to the inflammation of one or more joints, characterized by swelling, warmth, redness of the overlying skin, pain and restriction of motion. Osteoarthritis is the most common form of arthritis and the second most common cause of long-term disability among adults in the United States. The frequency of OA is about equal in males and females between the ages of 45-55, but after age 55, women are more commonly affected.
Knee osteoarthritis is more common in African-American women than Whites.
OA causes damage to cartilage, the dense connective tissue that serves as a shock absorber between our bones. Over time, the cartilage erodes and then eventually is lost. This results in bone on bone contact in the joint, leading to deterioration in movement and function. Weight bearing joints including the lower back, hips, knees and feet are most commonly affected. Symptoms Pain is gradual or insidious in onset, worsens by using the joint, and improves or is relieved by rest.