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ORIGINAL ARTICLES
Published online: 2019-04-03
Submitted: 2018-12-31
Accepted: 2019-03-06
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The applied anatomy and clinical significance of the proximal, V1 segment of vertebral artery

Xiaozhi Li, Lizhi Guan, Prince Last Mudenda Zilundu, Jing Chen, Zhuokai Chen, Mingjian Ma, Hongjie Zhuang, Zhuokai Zhuang, Yumin Qiu, Feng Ye, Xiaoxin Wu, Hanyi Sang, Yuyang Ye, Yueyin Han, Huosheng Yao, Haozhong Li, Guangming Zhong, Huiqin Wu, Zhen Jiang, Guoliang Chu, Dazheng Xu, Lihua Zhou
DOI: 10.5603/FM.a2019.0039
·
Pubmed: 30949997

open access

Ahead of Print
ORIGINAL ARTICLES
Published online: 2019-04-03
Submitted: 2018-12-31
Accepted: 2019-03-06

Abstract

Background: The aim of the study was to probe the morphological features of the proximal segment (V1) of vertebral artery (VA) in a sample of Chinese cadavers. Materials and methods: The origin, course and outer diameter at origin of the pre-vertebral part of the VAs were evaluated in 119 adult cadavers.   Results: 94.12% of the VAs originated from the subclavian arteries, bilaterally. The variant origins were present in 5.88% of the cadavers and all originated directly from the arch of the aorta. All the variations were observed on the left side of male cadavers. The average outer diameters at origin of the normal and variation groups were 4.35 ±1.00 mm and 4.82 ±1.42 mm, respectively P=0.035). In the normal group, no variation group, the average diameter in the males was significantly larger than that in the females (4.50 ±0.99mm, 3.92 ±0.92mm), respectively, P=0.000. In addition, only 5 cadavers in the normal had hypoplastic VAs (4.20%, 4 males, 3 right sided). VAD was present in 91 (69 males) out of 112 cadavers and more common on the left (n=48). In addition, 3 cadavers satisfied conditions for coexistence of VAD and VAH. All 7 cadavers in the variations group exhibited VAD that was more common on the right side (n=5). Conclusions: The morphologic variations and frequencies described above have implications for the early prevention, abnormal anatomy detection, accurate diagnosis, safe surgery and endovascular treatment on cardiovascular and neurological disease.

Abstract

Background: The aim of the study was to probe the morphological features of the proximal segment (V1) of vertebral artery (VA) in a sample of Chinese cadavers. Materials and methods: The origin, course and outer diameter at origin of the pre-vertebral part of the VAs were evaluated in 119 adult cadavers.   Results: 94.12% of the VAs originated from the subclavian arteries, bilaterally. The variant origins were present in 5.88% of the cadavers and all originated directly from the arch of the aorta. All the variations were observed on the left side of male cadavers. The average outer diameters at origin of the normal and variation groups were 4.35 ±1.00 mm and 4.82 ±1.42 mm, respectively P=0.035). In the normal group, no variation group, the average diameter in the males was significantly larger than that in the females (4.50 ±0.99mm, 3.92 ±0.92mm), respectively, P=0.000. In addition, only 5 cadavers in the normal had hypoplastic VAs (4.20%, 4 males, 3 right sided). VAD was present in 91 (69 males) out of 112 cadavers and more common on the left (n=48). In addition, 3 cadavers satisfied conditions for coexistence of VAD and VAH. All 7 cadavers in the variations group exhibited VAD that was more common on the right side (n=5). Conclusions: The morphologic variations and frequencies described above have implications for the early prevention, abnormal anatomy detection, accurate diagnosis, safe surgery and endovascular treatment on cardiovascular and neurological disease.

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Keywords

vertebral artery, anatomy, vertebral artery hypoplasia, vertebral artery dominance

About this article
Title

The applied anatomy and clinical significance of the proximal, V1 segment of vertebral artery

Journal

Folia Morphologica

Issue

Ahead of Print

Published online

2019-04-03

DOI

10.5603/FM.a2019.0039

Pubmed

30949997

Keywords

vertebral artery
anatomy
vertebral artery hypoplasia
vertebral artery dominance

Authors

Xiaozhi Li
Lizhi Guan
Prince Last Mudenda Zilundu
Jing Chen
Zhuokai Chen
Mingjian Ma
Hongjie Zhuang
Zhuokai Zhuang
Yumin Qiu
Feng Ye
Xiaoxin Wu
Hanyi Sang
Yuyang Ye
Yueyin Han
Huosheng Yao
Haozhong Li
Guangming Zhong
Huiqin Wu
Zhen Jiang
Guoliang Chu
Dazheng Xu
Lihua Zhou

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