<prompt> Joint NOT involved in Rheumatoid Arthritis:D.I.PP.I.PM.C.Wrist  <response>: Ans. a D.I.PRef: Maheshwari 5th ed. 1287 Rheumatoid arthritis characteristically causes swelling of small joints in the hand like the P.I.P, M.C.P and the wrist joint bilaterally. Isolated D.I.P joint involvement is seen in psoriatic arthropathy. D.I.P joint involvement is also seen with osteo-arthritis but the involvement is with pain at the base of thumb. Knee joint is the commonest joint involved in these patients. 