Anatomical motion hinged prosthesis
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United States of America Patent
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Sep 22, 2020
Grant Date -
Jan 11, 2018
app pub date -
Aug 14, 2017
filing date -
Jun 30, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
A hinged knee prosthesis comprises a tibial component and a femoral component. The tibial component is configured to attach to a tibia. The tibial component has a bearing surface. The femoral component is configured to hingedly attach to the tibial component and rotate relative to the tibial component. The femoral component comprises a medial condyle and a lateral condyle. The medial and lateral condyles have an eccentric sagittal curvature surface configured to rotate and translate on the bearing surface of the tibial component. A method of rotating a hinged knee through a range of flexion is provided. The method fixedly attaches a femoral component to a tibial component. Axial rotation of the femoral component is induced relative to the tibial component when the hinged knee is flexed.
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