Double Transverse Foramina—An Anatomical Basis for Possible Vertebrobasilar Insufficiency Risk and Vertebral Artery Injury

Cervical vertebrae may exhibit the anomalous presence of a double transverse foramen (DTF) that impact anatomy related structures traverse cervical region, such as vertebral artery (VA). This retrospective anatomical study utilized CT angiography scans to examine prevalence DTF, VA, and TF areas. The subjects were separated into two groups: normal (NTF group; 26 males 21 females) (DTF 24 females). presented significantly higher area values (30.31 ± 4.52 mm2) than females (27.48 1.69 in NTF group (p = 0.006). sex differences disappeared when DTF was present 0.662). There no VA between sexes both groups 0.184). No significant 0.485) noted. an increased VA/TF ratio < 0.001). showed reduced area. In contrast, did not change despite decreasing might be risk for transient vertebrobasilar insufficiency with especially females, because space is less subjects. lead easy compression following neck trauma.