Anatomical Location of the Common Iliac Veins at the Level of the Sacrum: Relationship between Perforation Risk and the Trajectory Angle of the Screw

Table 1

Demographic characteristics of patients and cadavers.

Characteristics	CT images	Cadavers
Age
Mean	67.3	83.8
SD	±13.7	±9.1
Minimum	16	68
Maximum	90	103
Sex
Female	24 (48%)	11 (55%)
Male	26 (52%)	9 (45%)