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Dynamic knee balancer with pressure sensing

  • US 7,578,821 B2
  • Filed: 10/25/2004
  • Issued: 08/25/2009
  • Est. Priority Date: 02/06/2004
  • Status: Active Grant
First Claim
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1. A method for sensing pressure in a knee during a surgical procedure on the knee, the method comprising:

  • engaging femoral and tibial portions of a knee adjustment device with the knee;

    sensing pressure exerted by the femoral and tibial portions against one another using at least one sensor coupled with at least one of the femoral or tibial portion;

    displaying data describing the sensed force; and

    adjusting at least one of the rotational orientation or anterior/posterior orientation of the femoral portion of the knee adjustment device to separately adjust dynamic tension in the lateral and medial collateral ligaments adjacent the knee,wherein adjusting affects the force exerted by the femoral and tibial portions against one another,wherein a stationary femoral member of the femoral portion of the knee adjustment device engages a distal femur of the knee and a mobile femoral member of the knee adjustment device is moveably coupled to the stationary femoral member, andwherein adjusting at least one of the rotational orientation or anterior/posterior orientation of the femoral portion of the knee adjustment device comprises moving the mobile femoral member relative to the stationary femoral member.

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