Bone erosion

Bone erosion is the loss of bone from disease processes. Erosive arthritis is joint inflammation (arthritis) with bone destruction, and such conditions include rheumatoid arthritis.^[2] Bone erosion is the loss of bone in a certain area, rather than a change in bone density, which is found in osteoporosis. Surprisingly, bone erosion is not common in osteoarthritis, although there is a subtype of osteoarthritis (erosive osteoarthritis) that may result in bone erosion.^[3]

Bone erosion
Bone erosions by rheumatoid arthritis.[1]
Specialty	Orthopedics