Patent ID: 8518121

Claim:
A prosthetic joint assembly supporting articulation of a joint comprising: a first component configured to be fixed to a tibia, the first component including a tray, a projection that projects from the tray, and a first dampening member that defines a first impact surface; and a second component that engages the first component, the second component including a second dampening member that defines a second impact surface that impacts the first impact surface as the first component moves relative to the second component, wherein the second component is a bearing with a bearing surface that supports articulation of the joint thereon, wherein the bearing is supported for movement relative to the tray, the bearing including an elongated aperture that receives the projection, the projection moving within the elongated aperture as the bearing moves relative to the first component, the elongated aperture including an inner surface; wherein the first and second dampening members are operable to dampen energy resulting from impact of the first and second impact surfaces, and wherein the first dampening member is disposed between the inner surface and the projection and wherein the second dampening member is disposed within the elongated aperture of the bearing and in contact with the inner surface.