Devices and methods for knee arthroplasty

摘要

The present invention provides, in certain embodiments, a device for positioning and orienting the femoral cutting block. The present invention also provides a device for setting rotation of sagittal resection for unicompartmental knee arthroplasty. The present invention further provides methods for setting the rotation of the tibial implant by kinematic measurements.

主权项

1. A method for setting tibial implant rotation, comprising: coupling at least one inertial sensor with at least one of a tibia and a femur of a leg of a patient; positioning an implant on a resected surface of the tibia of the patient; moving the leg to position the tibia in a plurality of positions differing in flexion, axial rotation, and/or varus-valgus relative to the femur; comparing values based on output of the at least one inertial sensor indicative of tibio-femoral kinematics with tibio-femoral kinematic target values for one or more of flexion, axial rotation, and/or varus-valgus; and quantitatively comparing the varus and valgus laxity.