#$%^&*AU2006202817B220120621.pdf#####ABSTRACT OF THE DISCLOSURE A tibial insert includes a platform defining an upper bearing surface and a bottom surface. A keel of the tibial insert is coupled to the bottom surface of the platform. A surgical method for knee anthroplasty is also disclosed. 5 06/06/06,15756 speci gp,21/9 Fig..... 14 19 2 1 70' 12 16 32 14 8 14Fig. 1 6419 15170 38 0 34 Fig. 2 33V 13 24- 26 33 28 Fig. 3