<prompt> keinbock Osteonecrosis, all true exceptTenderness over base of 3rd metacarpall is presentPain is more on wrist flexion than wrist extensionIs the osteochondritis of lunatecommon age group 20-40  <response>: Kienbock disease: Age: 20-40 yrs osteochondritis of lunate dominant side finesterer;s sign : tenderness at the base of 3rd metacarpal on making a fist. negative ulnar variance. pain on wrist dorsiflexion REF : MAHESWARI 9TH ED 