<unk>  is the loss of<unk>  from disease processes. Erosive arthritis is joint inflammation (arthritis) with<unk>  destruction, and such conditions include rheumatoid arthritis.<unk>  is the loss of<unk>  in a certain area, rather than a change in<unk>  density, which is found in osteoporosis. Surprisingly,<unk>  is not common in osteoarthritis, although there is a subtype of osteoarthritis (erosive osteoarthritis) that may result in<unk> .
Bone erosion
Osteolysis
Bone decalcification
Periosteal reaction
Articular cartilage damage
Acroosteolysis
Osteophyte
Myelonecrosis