Implantable hinged knee prosthesis having tibial baseplate
AssigneeSulzer Orthopedics Inc.
InventorJames W. Burrows
Life of this patent
Estimating the term…
Abstract
An implantable orthopedic knee joint prosthesis. A femoral component has a first body including a surface for engaging femoral bone and a second body including a surface for engaging another component. Means are provided for hingedly connecting the first and second bodies together for relative pivoting motion about a fixed pivot axis. A tibial component has a baseplate that includes a surface for engaging tibial bone and a surface for engaging another component. An adapter bearing is disposed intermediate the second body and the baseplate and includes means for engagement with and affixation to the baseplate, and means for engagement with and affixation to the second body. A keel depends from the tibial bone engaging surface of the baseplate.
Claims19
An implantable orthopedic knee joint prosthesis comprising
- a femoral component having a first body and a second body having a base plate including a prosthesis component engaging surface, and means for hingedly connecting said first and second bodies together for relative pivoting motion about a fixed pivot axis;
- a tibial component having a baseplate including a tibial bone engaging surface and a prosthesis component engaging surface;
- an adapter bearing disposed intermediate said second body of said femoral component and said baseplate of said tibial component, said adapter bearing having means for engagement with and affixation to said baseplate, and having means for engagement with and affixation to said second body of said femoral baseplate.
An implantable orthopedic knee joint prosthesis comprising
- a femoral component having a first body and a second body including a prosthesis component engaging surface, said first body being pivotally connected to said second body;
- a tibial component having a baseplate including a tibial bone engaging surface for engaging a tibial bone, and a prosthesis component engaging surface;
- an adapter bearing having a first surface and a second surface, said adapter bearing being disposed intermediate said second body of said femoral component and said baseplate of said tibial component and being fixedly secured to said baseplate of said tibial component so that said first surface of said adapter bearing engages with said prosthesis component engaging surface of said tibial component, said adapter bearing being further fixedly secured to second body of said femoral component so that said second surface engages said prosthesis component engaging surface of said second body.
Dependencies are inferred from the claim text.