Paragraph Number

197

The tibial articulation surface 4020 of the right side tibial insert 4010 is shaped to cooperate with the femoral articulation surface 4002 to change kinematics of a knee joint having the condition if the knee joint is the left side knee joint. The tibial articulation surface 4021 of the left side tibial insert 4012 is shaped to cooperate with the femoral articulation surface 4002 to change kinematics of the knee joint having the condition if the knee joint is the right side knee joint. Advantageously, a surgeon using the knee prosthesis system 4000 can determine intraoperatively whether to use the right side tibial insert 4010 (e.g., if the knee joint has a varus or valgus condition) or the left side tibial insert 4012 (e.g., if the knee joint lacks a varus or valgus condition or has a balanced condition). The knee joint may present with a varus condition, a valgus condition, or a balanced condition. As used herein, a "balanced condition" refers to a state of a bone and/or joint having a desired alignment of the bone or joint with a central axis of a limb or anatomical structure that includes the bone and/or joint. In certain embodiments, a balanced condition refers to a condition of the bone or joint that is not a varus condition and is not a valgus condition.

Added by DJM 1 2022