<prompt> Joint not involved in osteoahritisPIPDIPMCPKnee  <response>: Joint involvement in OACommon joints: Knee, Hip, spine cervical, lumbosacral, Hand PIP, DIP, first carpometacarpal, first tarsometatarsalUncommon joint: shoulderSpared: Wrist, elbow, ankle, metacarpophalangealRefer: Mohindras Fundamentals of Ohopedics, 2nd edition, pg no. 88, 101, 127 