Fig. 2From: The largest secure corridor of the infra-acetabular screw—a 3-D axial perspective analysisThe position of the virtual screw was verified in the 3D model. A, B Observed from the interior and exterior of the opaque 3D model, respectively. The screw has the largest diameter without penetrating the cortical bone. C, D Adjusted to the optimal length of the screw from the translucent 3D modelBack to article page