What is the difference between rheumatoid arthritis and osteoarthritis?
While both rheumatoid arthritis (RA) and osteoarthritis (OA) affect the joints, there isn't much more similarity. RA is the type that most people seem to be familiar with. This type of arthritis results in joints becoming red, warm to touch and eventually deformed. This is caused by inflammation inside the joints, particularly the hands. OA, on the other hand, is called the wear-and-tear arthritis or degenerative arthritis. It's usually the weight-bearing joints, like the knees, hips, and even back, that develop OA. In OA, the cartilage, tough elastic material that covers and protects the bones, breaks down. Bits of cartilage may break off, causing pain and swelling in the joint. Eventually, the cushioning material may break down completely and bone may start rubbing on bone.
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