Paragraph Number

123

FIGS 25-27 demonstrate the movement of the medial dwell point 2435 relative to the lateral dwell point 2436 during flexion of the assembly 2400. FIGS. 25A-25E show a posterior view of the composed assembly 2400 in 0 degree flexion, or “straight leg,” in a left knee. FIG. 25A is a medial-lateral cross-section perspective view of the assembly 2400. Generally, the femoral component 2401 contacts the insert 2410 at dwell points. Dwell points are the points of contact between two surfaces. The medial condylar articulation surface 2404 meets the medial articulation surface 2420 at a medial dwell point 2435. The lateral condylar articulation surface 2405 meets the lateral articulation surface 2421 at a lateral dwell point 2436. FIGS. 25B and 25C show the medial dwell point 2435 and the lateral dwell point 2436 at what may be considered a starting position, in 0 degrees flexion. FIG. 25D is an anterior-posterior cross-section through the lateral tibial compartment 2414 of the insert 2410. The medial ramp 2419 is visible (in the background) and shows the height difference between the medial posterior side 2415 and the lateral posterior side 2416. FIG. 25E is an anterior-posterior cross-section through the medial tibial compartment 2413 of the insert 2410; the medial ramp 2419 is visible and is occluding the lower lateral posterior side 2416.

Added by DJM 1 2022