Device for determining resection surfaces of femur and tibia in preparation for implantation of total knee endoprosthesis
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United States of America Patent
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Jul 22, 1997
Grant Date -
N/A
app pub date -
Jul 5, 1995
filing date -
Jul 8, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A device for determining resection surfaces on the femur (20) and on tibia (10) in preparation for implantation of a total knee endoprosthesis includes a femoral saw template (12) and a removable tibial component (35) which can be locked in the area of the tibial tuberosity and repositioned there in exactly the same place. The tibial component has a fixed plate and a movable plate. The frontal plane of the tibia is first established and, using the movable plate, pushed in parallel in the direction of the femoral saw template (12), which at this stage is arranged on the frontal aspect of the femur (10) for pivoting around the femoral axis. The movable plate (24) of the tibial component (35) is pushed until finally at least a linear contact between tibia positioners (25) of the movable plate and the femoral saw template (12) is created. The device achieves precise resection surfaces on the femur (10) in such a way that the dorsal and ventral cuts in the femur (10) run exactly parallel to the frontal aspect of the tibia (20).
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