PMC9659752_01
Morphometric measurement of the trajectory of the CBT screw. (A) The height (mm) of the lumbar pedicle (A), the width (mm) of the lumbar pedicle (B); (B) the distance (mm) of the inferior margin of the pedicle to the starting point (C); (C) the distance (mm) of the medial margin of the pedicle to the starting point (D), the distance (mm) from the starting point to the lateral margin of the pars interarticularis (E); (D) the maximum diameter (mm) in the transverse plane (F); (E) the maximum length (mm) in the sagittal plane (G); (F): the lateral angle ( ) (H); (G): the cephalad angle ( ) (I).
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F1
All the methods of measurement are shown in Figure 1.