Which one of the following is a recognized X-Ray feature of rheumatoid ahritis?
High-Yield Explanation
Rheumatoid ahritis is an autoimmune disease characterized by symmetric progressive polyahritis. Inflammation of synovium cause cailage destruction, and bone erosion. Bone erosion is the characteristic x-ray finding in a case of rheumatoid ahritis(RA). Xray findings in RA includes: Uniform joint space narrowing, symmetric joint involvement, marginal bone erosions, ulnar detion of phalanges, radial detion of radiocarpal joint, involvement of joints such as MCP, PIP and carpal. Ref: Physical Medicine and Rehabilitation Board Review By Sara J. Cuccurullo, Page 111; Examination Medicine By Nicholas Tailey, Simon O'Connor, Page 347; Differential Diagnosis in Conventional Radiology By Francis A. Burgener, 3rd Edition, Page 192-4.