<prompt> Heberden node denotes involvement of ?Distal inetrphalangeal jointProximal interphalangel jointMetacarpophalangeal jointMetatarsophalangeal joint  <response>: Ans. is a i.e., Distal inetrphalangeal joint In osteoahritis of hand : i Distal interphalangeal joint :- Heberdens node ii Proximal interphalangeal joint :- Bouchards node 