Our Osteoarthritis survey showed that it is the most common type of arthritis for Arthritis Insight Members. And that is true for the rest of America also. Osteoarthritis is the most common form of arthritis, affecting an estimated 20.7 million Americans. Almost every person over the age of 75 has OA in at least one joint. However the average age of our respondents with OA was 35-45.

Disease Description
Symptoms, diagnosis, treatment, and more.
Glucosamine & Chondroitin Sulfate
Is it worth all the hype?
Surgical Options for OA
When nothing else works, sometimes surgery is the answer.
Possible Causes of OA
There are many factors that lead to the development of osteoarthritis.
One of the newer treatments for osteoarthritis of the knee is viscosupplementation. Does it work?
Links to more information
Arthritis Insight isn’t the only place on the web to learn about OA. Check out these other sites.