Preoperative planning program and surgical support jig for hip replacement surgery

摘要

An image input step (S101) for inputting a plurality of two-dimensional tomographic images of the lower limb including the pelvis and femur, and an image reconstruction step (S102) for reconstructing a three-dimensional image including the pelvis and femur from the plurality of two-dimensional tomographic images. , S103), an artificial joint determining step (S104, S105) for determining an artificial joint to be placed on the pelvic acetabulum and a position and direction of the placement from a three-dimensional image of the pelvis and femur, and a three-dimensional image of the pelvis A base jig setting step (S107 to S109) for setting a three-dimensional image of a base jig having three struts respectively in contact with the three reference points of the pelvis, and the three-dimensional image of the base jig The computer is caused to execute a parameter acquisition step (S110 to S112) in which the direction of a line passing through the upper end of the strut closest to the acetabulum and parallel to the installation direction of the artificial joint is parameterized.