Arterial Vascular Structures Running Through Retrotransverse Foramen and Retrotransverse Groove of the Atlas Vertebrae
| Autor: | Xi-hong Xing, Man-hua Huang, Isaac Kumi Adu, Cui Gang, Ai-ming Zhang |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Adult
Male Adolescent Computed Tomography Angiography Vertebral artery Anastomosis Posterior approach Young Adult Imaging Three-Dimensional Atlas (anatomy) medicine.artery Foramen Medicine Humans Foramen Magnum Cervical Atlas Vein Vertebral Artery Computed tomography angiography Aged Aged 80 and over medicine.diagnostic_test business.industry Incidence Anatomic Variation Anatomy Arteries Middle Aged medicine.anatomical_structure Cervical Vertebrae Surgery Female Neurology (clinical) business Artery |
| Zdroj: | World neurosurgery. 154 |
| ISSN: | 1878-8769 |
| Popis: | Objective Retrotransverse foramen (RTF) and retrotransverse groove (RTG) are anatomic variations of the atlas (C1) vertebrae. RTF contains an anastomotic vein connecting atlanto-occipital and atlanto-axodian venous sinuses. The purpose of this study was to analyze the arterial vascular structures running though the RTF and RTG. Methods Three-dimensional volume rendered computed tomography angiography (3D VR CTA) images of 427 patients (264 men, 163 women; age 17–87 years) were reviewed and evaluated using the RadiAnt DICOM Viewer (version 5.0.2; Medixant, Poznan, Poland). The incidence of RTF or RTG, the incidence of the V3 segment of vertebral artery variants, and the artery vascular structures inside the RTF and RTG anatomic variation of C1 were analyzed. Results Fifty (11.7%) atlases presented RTF anatomical variant; 113 (26.5%) atlases presented RTG anatomical variants. The incidence of the V3 segment of vertebral artery variants was 0.94% (4 of 427). Three (0.7%) were persistent first intersegmental artery and 1 (0.2%) was the fenestration of the vertebral artery on left side. In 4 cases of C1 vertebral artery V3 segmental variants, there were no RTF and RTG. No artery vascular structure was found in RTF or RTG. Conclusions The RTF or RTG of C1 was a common anatomical variant. No arterial vascular structure runs though the RTF or RTG. The presence of C1 RTF and RTG variants had no effect on the V3 segmental course of the vertebral artery. Preoperative understanding of these variations using 3D CTA are helpful for the safe execution of the upper cervical posterior approach surgeries. |
| Databáze: | OpenAIRE |
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