Patent ID: 8414653

Claim:
A knee prosthesis system, comprising: at least a first tibial component, wherein the first tibial component has a first surface comprising a medial concave articulation surface and a lateral concave articulation surface, a second surface, a length X along a first axis of the first tibial component, a width Y along a second axis of the first tibial component, and a thickness Z between the first surface of the first tibial component and the second surface of the first tibial component, wherein the thickness Z is located in the transverse plane and is between the second surface of the first tibial component and the lowest point of the concave articulation surfaces of the first tibial component, wherein the medial concave articulation surface and the lateral concave articulation surface of the first tibial component are each defined by a first tibial insert slope that is equal; at least a second tibial component, wherein the second tibial component has a first surface comprising a medial concave articulation surface and a lateral concave articulation surface, a second surface, a length X along a first axis of the second tibial component, a width Y along a second axis of the second tibial component, and a thickness Z between the first surface of the second tibial component and the second surface of the second tibial component, wherein the thickness Z is located in the transverse plane and is between the second surface of the second tibial component and the lowest point of the concave articulation surfaces of the second tibial component, wherein the medial concave articulation surface and the lateral concave articulation surface of the second tibial component are each defined by a first tibial insert slope that is equal; wherein the thickness Z is substantially the same for both the first tibial component and the second tibial component; wherein the length X is substantially the same for both the first tibial component and the second tibial component; wherein the width Y is substantially the same for both the first tibial component and the second tibial component; and wherein the first tibial insert slope is different than the second tibial insert slope.