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Knee pain may be due to various causes. Some are common such as osteoarthritis (OA), more commonly just referred to as knee arthritis. Knee arthritis use to be just felt to be a wear and tear disorder or the effects of time and age. This was distinguished from knee rheumatoid arthritis (RA) which is an autoimmune disorder. Rheumatoid arthritis (RA) results in the body’s immune system attacking its own joints resulting in pain, swelling and ultimately joint destruction.

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