Total Stabilizing Knee Joint Prosthesis

A kit comprising:

• a femoral insert, the femoral insert being configured to be received on a bone-facing side of a femoral articular component including first and second articulation surfaces, the femoral insert including a box with a cavity between medial and lateral condylar portions of the femoral insert;
• a first tibial insert configured to be received on a joint-facing side of a tibial baseplate, the first tibial insert including a peg extending away from the tibial baseplate when the first tibial insert is attached to the tibial baseplate;
• and
• a second tibial insert including a medial articulation surface, a lateral articulation surface, and a post therebetween, a cavity of the post being configured to receive the peg, and the post being receivable within the cavity of the box of the femoral insert,
• wherein when the femoral insert is received in the femoral articular component to define a femoral implant and the first and second tibial inserts are received on the tibial baseplate to define a tibial implant, the femoral implant rotates relative to the tibial implant such that an axis of rotation of an inner surface of the box of the femoral implant and an end surface of the post of the tibial implant is coincident over a range of motion.