Paragraph Number

103

The post 1330 may have an articulation surface 1331 extending around the post 1330 on the medial, posterior, lateral, and anterior aspects of the post 1330. The articulation surface 1331 may include a medial articulation surface 1332, a lateral articulation surface 1334, an anterior post surface 1336, and a posterior articulation surface 1342. The medial and lateral articulation surfaces 1332, 1334 may taper slightly inward from the post superior end 1340 to the post base 1338 of the post 1330 relative to an insert midline vertical axis 1302. However, some embodiments of CCK insert 1312 may include less taper, more taper, and/or no taper of the medial and lateral articulation surfaces 1332, 1334. The medial articulation surface 1332 may be continuous with the medial condylar articulation surface 1325, and the lateral articulation surface 1334 may be continuous with the lateral condylar articulation surface 1327. The anterior post surface 1336 may extend between the medial and lateral articulation surfaces 1332, 1334 and may be convexly rounded. The anterior post surface 1336 may taper outward from the post superior end 1340 to the post base 1338 relative to the midline axis 1302, as best seen in FIG. 22F. In other embodiments of the CCK insert 1312, the anterior post surface 1336 may include less taper, more taper, and/or no taper. The post 1330 of the CCK insert 1312 may be wider and bigger in diameter than the post 30 of PS insert 12, for example to provide increased stability in the case of removal of the collateral ligaments. A midline medial-lateral axis 1304 and a mid-line anterior-posterior axis 1306 are also shown in FIGS. 22D through 22F.

Added by DJM 1 2022