Fig. 4From: Postoperative 320 multi-slice computed tomography in assessment of pedicle screw insertion in thoraco-lumbar fixationa, b Axial cuts are showing penetration of the left screw to the anterior aspect of L4 vertebra and lateral violation of the screw in the left pedicle (grade I). c 3D sagittal reconstruction cut is showing anterior penetration of the L4 vertebra. d Coronal reconstruction is showing penetration of the lower vertebral end plate of S1 vertebra by the left-sided screwBack to article page