Figure 5

Measurement of the posterior tibial slope. In a true lateral position, the image of the 3D tibial model was captured and the posterior tibial slope was measured. The medial tibial plateau line and the line perpendicular to the line bisecting the tibial shaft were drawn. Posterior tibial slope was defined by the angle formed by these two lines. (A) Posterior tibial slope of the preoperative original tibia. (B) Posterior tibial slope of the virtually osteotomized tibia. PTS = posterior tibial slope. These figures were created using the Mimics software (version 17; Materialise, Leuven, Belgium).