Bimetal tibial component construct for knee joint prosthesis
First Claim
1. A prosthetic tibial component for a prosthetic total knee joint, said component comprising:
- first and second constructs;
said first construct comprising a metal base construct adapted to engage a tibia; and
said second construct comprising a polyethylene bearing construct that attaches to said metal base construct and articulates with a prosthetic femoral component on an opposing side of the joint;
wherein said metal base construct comprises first and second different metals;
said first metal being adapted to engage a tibia surface; and
said second metal being adapted to engage said polyethylene bearing construct;
said first metal being adapted to provide a superior bone-engaging face; and
said second metal being adapted to provide a superior polyethylene-engaging face.
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Accused Products
Abstract
A prosthetic tibial component for a prosthetic total knee joint includes two constructs, one being a metal base that engages a bone and the other being a polyethylene bearing that attaches to the metal base and articulates with a femoral prosthetic component on a opposing side of the joint. The metal base is composed of two metals, one of which engages the bone surface and the other of which engages the polyethylene bearing. Each of the metals is selected for its function. The first metal is selected to provide a superior bone-engaging face, while the second metal is selected to provide a superior polyethylene-engaging face. By combining the different material characteristics of two different metals there is formed a superior bone-engaging face and a superior polyethylene-engaging face.
113 Citations
7 Claims
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1. A prosthetic tibial component for a prosthetic total knee joint, said component comprising:
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first and second constructs; said first construct comprising a metal base construct adapted to engage a tibia; and said second construct comprising a polyethylene bearing construct that attaches to said metal base construct and articulates with a prosthetic femoral component on an opposing side of the joint; wherein said metal base construct comprises first and second different metals; said first metal being adapted to engage a tibia surface; and said second metal being adapted to engage said polyethylene bearing construct; said first metal being adapted to provide a superior bone-engaging face; and said second metal being adapted to provide a superior polyethylene-engaging face. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification