Paragraph Number

122

The medial ramp 2419 and the gradient it creates along the medial articulation surface 2420 towards the medial low point 2428 and may cause a translation or movement of the medial condyle 2402 greater than a translation or movement of the lateral condyle 2403, as the knee and assembly 2400 range from 0 degree of flexion, or extension, to 90 degrees of flexion. The medial condyle 2402 may move down the medial ramp 2419 such that the medial dwell point 2435 migrates anteriorly and outwardly toward the medial perimeter 2426 as the degree of flexion increases. The lateral condyle 2403 may remain in generally the same location near the lateral low point 2431 so the lateral dwell point 2436 may remain in generally the same location. The lateral condyle 2403 may also migrate as the knee moves into flexion, so that the lateral dwell point 2436 migrates posteriorly and outwardly concurrently as the medial dwell point 2435 migrates anteriorly and outwardly. The asymmetric translation of the medial dwell point 2435 and lateral dwell point 2436 may create a tibiofemoral rotation between extension and flexion. As used herein, "tibiofemoral rotation" refers to rotation of a tibia bone and/or part of a patient's leg that includes the tibia bone about a longitudinal axis that is parallel to a center axis of a leg of the patient.

Added by DJM 1 2022