| US 7,591,855 B2 | ||
| Knee prosthesis with rotation bearing | ||
| Arnold Keller, Kayhude (Germany) | ||
| Assigned to Waldemar Link GmbH & Co. KG, Hamburg (Germany) | ||
| Appl. No. 10/474,952 PCT Filed Apr. 15, 2002, PCT No. PCT/EP02/04157 § 371(c)(1), (2), (4) Date May 10, 2004, PCT Pub. No. WO02/085258, PCT Pub. Date Oct. 31, 2002. |
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| Claims priority of application No. 01110260 (EP), filed on Apr. 25, 2001. | ||
| Prior Publication US 2004/0186583 A1, Sep. 23, 2004 | ||
| Int. Cl. A61F 2/38 (2006.01) | ||
| U.S. Cl. 623—20.24 [623/20.29] | 9 Claims |
| 1. A knee prosthesis system, comprising:
a femoral component comprising runners;
a tibial component comprising a tibial plateau that is rotationally fixed relative to the tibial component, the runners being
arranged to load-bearingly engage the tibial plateau;
a first intermediate piece configured to connect the femoral component and the tibial component forming a flexion bearing
with the femoral component and a rotation bearing with the tibial component, allowing the runners to rotate relative to the
tibial plateau; and
a second intermediate piece configured to connect the femoral component and the tibial component forming a flexion bearing
with the femoral component and fully block rotation between the femoral component and the tibial component, blocking the runners
from rotating relative to the tibial plateau;
wherein the knee prosthesis system is configured to use either the first intermediate piece or the second intermediate piece
to connect the femoral component and the tibial compoment.
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