Paragraph Number

12

Implementations may include one or more of the following features. The knee joint prosthesis system where the knee joint is a right knee joint of the patient; and where the left side tibial insert is attached to the insert interface of the tibial baseplate component of the right knee joint such that the left side tibial insert constrains the femoral articulation surface within the medial tibial compartment and mitigates the condition. The tibial articulation surface facilitates tibiofemoral rotation within the medial tibial compartment during flexion of the knee joint where the condition is a valgus knee joint. The tibial articulation surface adjusts mediolateral stability during flexion of the knee joint where the condition is a varus knee joint. The tibial articulation surface increases constraint on a lateral collateral ligament of the knee joint and decreases tension on a medial collateral ligament of the knee joint. The medial tibial compartment may include a medial perimeter, a medial high point, and a medial low point and where each of the right side tibial insert and the left side tibial insert may include a lateral tibial compartment that may include a lateral perimeter, a lateral high point, and a lateral low point. Each of the right side tibial insert and the left side tibial insert may include a lateral tibial compartment and a medial tibial compartment and where the femoral articulation surface may include a medial femoral compartment and a lateral femoral compartment and where the medial tibial compartment engages the lateral femoral compartment at a lateral dwell point during flexion and the lateral tibial compartment engages the medial femoral compartment at a medial dwell point during flexion.

Added by DJM 1 2022