Three-Dimensional Analysis of the Characteristics of the Femoral Canal Isthmus: An Anatomical Study

Figure 1

Using Mimics software, a 3D model of the femoral medullary canal was created between the lesser trochanter and the flare of the condyles. An arc centerline was fitted to the canal model using the centerline fit function. The diameters of all the inscribed circles along the arc centerlines were created with 1 mm intervals and exported to determine the isthmus location. In this case, the isthmus diameter was 10.50 mm.