Prosthetic tibial component for knee joint prosthesis

摘要

A prosthetic tibial component for a knee joint, said prosthetic tibial component comprising:
a base construct for engaging the tibia; anda bearing construct for engaging the femoral side of the knee joint;said bearing construct being adjustably fixedly mountable to said base construct.

主权项

1. A prosthetic tibial component for a knee joint, said prosthetic tibial component comprising:
a base construct for engaging the tibia, the base construct comprising a bore; a bearing construct for engaging the femoral side of the knee joint, the bearing construct comprising one of a horizontally-oriented tongue and groove; and a mount interposed between the base construct and the bearing construct for mounting the bearing construct to the base construct, the mount comprising (i) a post configured for positioning within the bore of the base construct and rotation to a user-selected angular orientation after the base construct has been disposed in a bone, and (ii) a locking mechanism for locking the post within the bore of the base construct with the user-selected angular orientation after the base construct has been disposed in a bone, so as to secure the mount to the base construct with the user-selected angular orientation, and the mount further comprising the other of the horizontally-oriented tongue and groove for slidably receiving the bearing construct and locking the bearing construct to the mount; wherein the horizontally-oriented groove comprises two vertically-extending walls, with each vertically-extending wall terminating in a horizontally-extending projection, and with the two vertically-extending walls being spaced from one another; wherein the horizontally-oriented tongue comprises a vertically-extending member terminating in a pair of laterally-extending projections; and further wherein the vertically-extending member of the tongue is sized to fit between the horizontally-extending projections of the groove and the pair of laterally-extending projections of the tongue are sized to fit between the pair of vertically-extending walls of the groove.