<prompt> Heberdens ahropathy affects which joints mainly ?Lumbar spineSymmetrically large jointsSacroiliac jointsDistal interpharyngeal joints  <response>: In osteoahritis of hand Distal interpharyngeal joint-Heberdens node Proximal interpharyngeal joints -Bouchards node Refer Harrinson 20the p 2035 maheswari 9th ed 