FIND A PHYSICIAN        

What is Osteoarthritis?

Posted: June 1, 2006

Osteoarthritis is the most common type of arthritis, especially among older people. Sometimes it is called degenerative joint disease or osteoarthrosis.

Osteoarthritis is a joint disease that mostly affects the cartilage. Cartilage is the slippery tissue that covers the ends of bones in a joint. Healthy cartilage allows bones to glide over one another. It also absorbs energy from the shock of physical movement.

In osteoarthritis, the surface layer of cartilage breaks down and wears away. This allows bones under the cartilage to rub together, causing pain, swelling and loss of motion of the joint. Over time, the joint may lose its normal shape.

Also, small growths called bone spurs may grow on the edges of the joint. Bits of bone or cartilage can break off and float inside the joint space. This causes more pain and damage.

People with osteoarthritis usually have joint pain and limited movement. Unlike some other forms of arthritis, osteoarthritis affects only joints and not internal organs.

Osteoarthritis affects each person differently. Scientists do not know yet what causes the disease, but they suspect a combination of factors, including being overweight, the aging process, joint injury and stresses on the joints from certain jobs and sports activities.

Depending on the individual, treatments may include exercise, weight control, pain relief techniques, medicines, alternative therapies and surgery.

Source: National Institute of Arthritis, Musculoskeletal and Skin Diseases

We Have Answers
Do you have medical questions or need help finding a doctor? The experts at Columbia St.Mary’s can help. Click here.