Paragraph Number

87

Referring to FIGS. 12A-12F, another alternative embodiment of a tibial insert 312 is shown. The tibial insert 312 may be referred to as a constrained condylar knee (CCK) tibial insert 312 (or “CCK insert”). The CCK insert 312 may include a fixation side 320, which may be an inferior side, opposite an articulation side 322, which may be a superior side. The articulation side 322 may include a medial tibial compartment 324 having a medial condylar articulation surface 325 and a lateral tibial compartment 326 having a lateral condylar articulation surface 327. A central portion 328 may separate the medial tibial compartment 324 from the lateral tibial compartment 326. A post 330 may protrude superiorly from the central portion 328, and extend from a post base 338 to a top, or post superior end 340. From the anterior perspective, as shown in FIG. 12E, and the posterior perspective, as shown in FIG. 12D, the post 330 may have its maximum medial-lateral or horizontal width at the superior end 340 of the post 330, and its minimum medial-lateral or horizontal width at the post base 338 of the post 330. The post 330 may be bilaterally symmetrical from the anterior and posterior perspectives. The CCK insert 312 may further include an insert base 346 and an engagement feature 348 for engagement with a tibial tray (not shown).

Added by DJM 1 2022