Method of implanting the tibial augment

A method for augmenting a tibial component of a knee joint prosthesis, comprising:

• implanting a tibial component of a knee joint prosthesis, a first annular member, and a second annular member in a proximal portion of a human tibia, wherein the tibial component, the first annular member, and the second annular member are left in the proximal portion of the human tibia with the first annular member and the second annular member connected to the tibial component for augmenting the tibial component in the proximal portion of the human tibia,
• wherein the tibial component comprises a tibial plate and a tibial stem component extending from said tibial plate,
• wherein the first annular member and the second annular member are of different sizes and each include a proximal end, a distal end, and a tapered outer surface that tapers in a direction toward the distal end of the respective annular member, wherein the first annular member and the second annular member are each constructed separately from said tibial component for subsequent connection to said tibial component, wherein said first annular member and said second annular member prior to connection to said tibial component each have an established size and shape for implantation in the human tibia, wherein said first annular member and said second annular member are each formed with a porous metal material for facilitating bony ingrowth into said first annular member and said second annular member, and wherein said first annular member and said second annular member each provide a passageway extending entirely through the respective annular member, and
• wherein the tibial component being connected to the first annular member and the second annular member in the proximal portion of the human tibia includes the first annular member and the second annular member being in a stacked arrangement in a proximal-distal direction in the proximal portion of the human tibia with the tibial stem component received in the passageways of the respective annular members.