Figure 9.

Assessment of vertebral translation and interspinous widening in CT. (A) Midsagittal CT image shows the method of measurement of vertebral translation by the distance between the most cephalad, posterior corner of the caudal vertebral body (black line), and a tangent line to the posterior vertebral body of the cranial vertebra (yellow line);(B) Coronal CT image shows the method of measurement of vertebral translation by the distance between the most cephalad, lateral corner of the caudal vertebral body (black line), and a tangent line to the lateral vertebral body of the cranial vertebra (yellow line). ³⁹ ; (C) midsagittal CT shows various methods of measurement of interspinous widening ⁴² (1) Supraspinous distance; the distance between the inferior edge spinous process of the upper adjacent vertebra and the superior edge spinous process of the fractured vertebra (solid yellow line) minus the average interspinous distance of the upper and lower adjacent vertebra or the lower vertebrae (2 dashed yellow lines), (2) Interspinous distance measured at the middle of the spinous process (blue lines), (2) interlaminar distance measured between the lamina (white lines).