Patent ID: 6228091
Filing Date: 2001-05-08
Classification: A61B,A61F

Abstract:
A system for determining the relative location of the IM canal relative to the perimeter of the tibial plateau with the aid of a trial stem inserted in the IM canal and for preparing a tibial component having a baseplate and an offset stem, said system comprising:(a) a template approximating the size and shape of a tibial plateau;(b) angular indication means coupled to said template for indicating an angle about the center of said template;(c) offset bushing means rotatably coupled to said angular indication means, said offset bushing means having positional indicia and a throughbore dimensioned to fit over the trial stem, said throughbore being offset from the center of said bushing means;(d) a tibial component adjustment tool having(d1) a base portion adapted to be coupled to the baseplate of the tibial component; and(d2) a turntable portion adapted to be coupled to the stem of the tibial component, said turntable having angular indication means for indicating the angular offset position of the stem relative to the baseplate wherein rotation of said bushing relative to said angular indication means causes movement of said template relative to said tibial plateau and said positional indicia with said angular indication means indicate the approximate angular position of the center of said template relative to the IM canal and said turntable portion of said adjustment tool is rotatable so said angular indication means indicate the same angle indicated by said positional indicia with said angular indication means.