Patent ID: 8548559
Filing Date: 2013-10-01
Classification: A61B,A61F

Abstract:
1. A method for locating a guide wire axis on a femoral neck, comprising: tracking a femur; registering a frame of reference with respect to the tracking of the femur from a first registration tool mounted onto the femur in a predetermined configuration; obtaining preoperative planned data pertaining to the femoral neck; digitizing femoral neck data with respect to the tracking of the femur by applying a second registration tool is against an unaltered exterior bone surface of the femoral neck at desired orientations while tracking the second registration tool, wherein said digitizing further comprises applying a first planar surface of the second registration tool against superior aspects of both the greater trochanter and the femoral head and applying a second planar surface of the second registration tool against posterior or anterior aspects of both the greater trochanter and the femoral head; calculating at least an orientation of the guide wire axis with respect to the tracking of the femur by associating the preoperative planned data and the femoral neck data; and outputting data for the orientation of the guide wire axis to guide an operator in aligning a tool with the guide wire axis.