Joint problems may occur in one or more joints. Usually they are the knee, hip, shoulder or elbow. In the case of (osteo) arthrosis arise the problems caused by excessive wear or damage to the articular cartilage. This cartilage in the joint serves as a kind of shock absorber, which makes the underlying bone around the joint is protected. By damage to the cartilage disappears, this protective layer is affected bone. This leads to all kinds of changes in the joint. It is thicker, less flexible and the muscles relax around through the reduced use.
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