Low stress all poly tibial component

摘要

A tibial component for use in conjunction with a knee replacement surgery. An inferior surface of the tibial component may be concave to thereby improve bonding between the tibial component and a tibia. The tibial component may produce low stress in the cement mantle during in-vivo loading. A stem extending from the inferior surface of the tibial component may include an anterior curvature to facilitate the use of minimally evasive surgical techniques. The stem may further include medial-lateral wing portions with a posterior curvature to provide improved support.

主权项

1. A tibial component for use in a knee replacement surgery, said tibial component having an anterior portion and a posterior portion, the tibial component comprising:
a bearing surface for receiving a femoral component attached to an end of a femur bone; an inferior surface opposite said bearing surface; and a stem extending downwardly and anteriorly from said inferior surface to a terminal end, such that the stem includes an anterior curvature in a sagittal plane, wherein said stem includes an anteriorly facing surface which is posteriorly curved, and wherein the anteriorly facing surface is convex in a transverse plane, and wherein the stem also includes an posteriorly facing surface which is posteriorly curved, and wherein the posteriorly facing surface is concave in a transverse plane.