<prompt> Joint not involved in osteoarthritis -PIPDIPMCPKnee  <response>: Ans. is c i.e., MCP Joint involvement in OAo Common joints : Knee, Hip, Spine cervical, lumbosacral, Hand PIP, DIP, first carpometacarpal, first tarso-metatarsal.o Uncommon joint: Shouldero Spared: Wrist, elbow, ankle, metacarpophalangeal. 