Feature of osteoahritis is
High-Yield Explanation
Joint involvement in OACommon joints: Knee, Hip, Spine (cervical, lumbosacral), Hand (PIP, DIP, first carpometacarpal), first tarsometatarsalUncommon joint: ShoulderSpared: Wrist, elbow, ankle, metacarpophalangealIn osteoahritis of hand:Distal interphalangeal joint:- Heberden's nodeProximal interphalangeal joint: bouchard's node(Refer: Mohindra's Fundamentals of Ohopedics, 2nd edition, pg no. 88, 101, 127)