Heberden node denotes involvement of ?: (A) Distal inetrphalangeal joint, (B) Proximal interphalangel joint, (C) Metacarpophalangeal joint, (D) Metatarsophalangeal joint
Answer is A. Ans. is 'a' i.e., Distal inetrphalangeal joint In osteoahritis of hand : i) Distal interphalangeal joint :- Heberden's node ii) Proximal interphalangeal joint :- Bouchard's node