Fig. 2

The preoperative three-dimensional computed tomography image (3DCT) plan and a postoperative 3DCT image are shown. 3D computer-aided design data of femoral and tibial components were fit to the 3DCT image using six parameters, specifically the coronal, sagittal, and axial alignment of the femoral and tibial prostheses. The blue components indicate the preoperative plan image; the green and yellow components indicate the postoperative component