Abstract
Category B is the mineralization and shape of the bones. This category includes bone mineralization, erosions, bone cysts, and osteophyte formation. In rheumatoid arthritis (RA), marginal erosion is a hallmark of the disease and occurs in the bare areas of the bone. Especially, juxta-articular osteoporosis is the earliest change in plain radiograph of patients with RA.
Keywords:
Bone mineralization, Cone cysts, Erosions, Juxta-articular osteoporosis, Osteopytes, Rheumatoid arthritis.