Patent ID: 8771364

Claim:
A knee joint prosthesis comprising: a tibial component including a tibial tray, said tibial tray comprising: a platform-like tray having a superior bearing engaging surface and an inferior surface, said platform-like tray defining a tray perimeter and a first height measured between said superior bearing engaging surface and said inferior surface; a raised wall formed on and extending from said inferior surface of said platform-like tray, said raised wall offset inboard relative to said tray perimeter and configured to provide increased rigidity of said platform-like tray; and porous material disposed on said inferior surface of said platform-like tray at a location generally between said raised wall and said tray perimeter, said porous material having a second height measured between said inferior surface of said platform-like tray and a bone engaging surface of said porous material, said second height being greater than said first height; wherein said platform-like tray further comprises, a first support wall formed on said inferior surface and extending between a generally anterior/lateral position to a posterior/medial position.