| 摘要 |
A mobile tibial assembly (10) includes a tibial tray (12) and a tibial insert (14) configured to move relative to the tibial tray. The tibial insert includes a platform (60) having an upper bearing surface (62) and a stem (66) extending downwardly from a bottom surface (64) of the insert. The tibial tray includes a corresponding recess, such as a cavity (40) and/or a channel, configured to receive the stem therein such that the stem and the recess cooperate to constrain the movement of the tibial insert relative to the tibial tray.
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