Fig. 2From: Comparison of CT values in traditional trajectory, traditional cortical bone trajectory, and modified cortical bone trajectoryModel of the L5 vertebra and diagrams illustrating the trajectory from the axial and sagittal views. (A 1–3) TT screws at the L5; (B 1–3) CBT screws at the L5; (C 1–3) MCBT screws at the L5Back to article page