Patent ID: 8696755
Filing Date: 2014-04-15
Classification: A61B,A61F

Abstract:
1. A tibial component for an artificial knee joint, comprising in combination: a shaft adapted to be located axially within a proximal end of a tibia; a plate fixed to said shaft and oriented primarily within a plane substantially perpendicular to said shaft; an insert adapted to be coupled to a proximal side of said plate opposite said shaft; said insert adapted to support femoral loads thereon; a dovetail rib extending up from said plate; a dovetail recess in a distal surface of said insert, said dovetail recess sized to receive said dovetail rib therein; wherein said insert includes a proximal surface having a pair of wells therein, each well adapted to receive a condylar structure therein; wherein said wells each include a valley extending arcuately away from a low point within each said well, each of said valleys tapering upward away from a respective one of said low points of said wells with arcs each curving about a respective center point axis aligned with the low point of the other said well on said proximal surface of said insert, said valleys adapted to maintain alignment for passing of a condylar structure along one of said valleys while another condylar structure remains located within a low point of the other said well; wherein said low point within each well defines a most distal portion of each well, with said proximal surface extending proximally in every direction away from each said well; and wherein said valleys each exhibit a proximal slope away from said low point of each said well, as said valleys extend anteriorly from said low point of each said well.