Sensing force during partial and total knee replacement surgery
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United States of America Patent
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Jul 3, 2012
Issued Date -
N/A
app pub date -
Aug 20, 2009
filing date -
Aug 20, 2008
priority date (Note) -
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Abstract
Systems, devices, and methods are provided for measuring forces in the space of a knee during surgery. Such forces can be caused by tension in the ligaments of the knee. A femoral member is engaged with a distal femur. While the knee is flexed, partially extended, or fully extended, a force sensor and a gauge shim can be placed in the gap between the femoral member and the tibial plateau to measure the forces therebetween. The force sensor provides an accurate and quantifiable measurement of force, making knee replacement surgery and ligament tension balancing more accurate, standardized and repeatable. The force sensor comprises an elongate housing which comprises a thin force sensing distal portion and a proximal handle portion.
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