Fig. 2From: C2 pedicle screw placement on 3D-printed models for the performance assessment of CTA-based screw preclusion(A) Preoperative CTA multiplanar reconstruction was performed to measure MPD and evaluate the feasibility of C2 pedicle screw placement. (B) The measurement plane was shown on 3D reconstruction, which is perpendicular to the screw trajectory of both the axial and sagittal planesBack to article page