A knee implantation system for replacing a portion of a knee joint
includes an unicondyler tibial implant configured to replace a portion of
a tibia that includes a first member and a second member. The first
member has a body portion that includes an articulating surface for
replacing only a single superior articulating surface of the tibia. The
second member has a textured surface. The second member is removably
connected to the body portion and the textured surface is disposed about
opposite the articulating surface.