Osteoarthritis (wear and tear of joints) is defined as cartilage damage with bone damage to one or more joints. The disease begins with a small, so-called “cartilage damage” in the cartilage layer. This normally forms an elastic, protective coating over the ends of the bones, where it acts as a kind of “shock absorber” to cushion sudden, hard movements.
Only when the bone under the diseased cartilage is attacked in the further course is it referred to as the early stage of arthrosis. In the absence of treatment, it usually worsens gradually but continuously over many years. Sometimes swelling and painful inflammation of the joint also occur.