Systems and methods for guiding cuts to a femur and tibia during a knee arthroplasty

摘要

An assembly for guiding resection of a femur and tibia of a knee joint in preparation for installing a femoral and tibial knee components. For example, the assembly can include tibial and femoral IM rods to which are connected through a tensioning bolt that allows controlled adjustment of the distraction of the tibia and femur during cut positioning in a range of flexion angles. Also, the assembly is usable with relatively small, noninvasive approaches to the knee joint by way of relatively narrow, low profile components that attach to tibial and femoral IM rods. Further, the assembly includes several quick-release components to allow fast assembly and disassembly in a surgical setting. Each of these aspects, along with the ability of the assembly to accurately guide initial reference cuts to the tibia and femur, promotes an improved outcome for the patient.

主权项

1. An assembly for guiding resection of at least one of a femur and a tibia of a knee joint, the assembly comprising:
a femoral member configured to removably couple with and extend at least partially into the femur, the femoral member defining an aperture that extends into the femoral member; a tibial member configured to be removably fixed to the tibia, wherein the tibial member comprises a proximal portion and a distal portion, and wherein a recess is defined at the proximal portion of the tibial member; and a tensioning assembly configured to extend between the femoral member and the tibial member such that a first portion of the tensioning assembly extends into the aperture, such that a second portion of the tensioning assembly is received in the recess, and such that the tensioning assembly is configured to be tightened and loosened to adjust relative positioning of the femoral member and the tibial member with respect to each other.