SYSTEMS AND METHODS FOR PROVIDING DEEPER KNEE FLEXION CAPABILITIES FOR KNEE PROSTHESIS PATIENTS

摘要

Systems and methods for providing deeper knee flexion capabilities, more physiologic load bearing and improved patellar tracking for knee prosthesis patients. Such systems and methods include (i) adding more articular surface to the antero-proximal posterior condyles of a femoral component, including methods to achieve that result, (ii) modifications to the internal geometry of the femoral component and the associated femoral bone cuts with methods of implantation, (iii) asymmetrical tibial components that have an unique articular surface that allows for deeper knee flexion than has previously been available, (iv) asymmetrical femoral condyles that result in more physiologic loading of the joint and improved patellar tracking and (v) modifying an articulation surface of the tibial component to include an articulation feature whereby the articulation pathway of the femoral component is directed or guided by articulation feature.

主权项

1. A tibial prosthesis, comprising:
a tibial component for replacing at least part of a proximal portion of a tibia, the tibial component including a concave articulation surface with a convex articulation surface disposed at a posterior end of the concave articulation surface, wherein a proximal most portion of the convex articulation surface is configured to articulate against an articulation surface of at least one of a femoral condyle of a femur and a femoral component on a distal end of the femur.