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European Spine Journal

Erschienen in:

29.12.2017 | Original Article

Evaluation of vertebral artery anomaly in basilar invagination and prevention of vascular injury during surgical intervention: CTA features and analysis

verfasst von: Shuaishuai Xu, Shidong Ruan, Xiaoyu Song, Jinyu Yu, Jianrong Xu, Ruozhen Gong

Erschienen in: European Spine Journal | Ausgabe 6/2018

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Abstract

Objective

To evaluate vertebral artery anomaly at the craniovertebral junction (CVJ) in patients with basilar invagination (BI) by computed tomographic angiography (CTA), and to discuss the prevention strategy of vascular injury.

Methods

The primary axial, multiple planar reconstruction and volume-rendering cervicocranial CTA images of 39 BI patients were analysed to evaluate vertebral artery anomaly at the CVJ: persistent first intersegmental artery (PFIA), fenestrated vertebral artery (FEN), and extracranial C1/2 origin of posterior inferior cerebellar artery (PICA), high-riding vertebral artery, side-to-side asymmetry and irregular midline carotid artery loop was determined by subjective vision. 100 patients who underwent CTA for reasons other than CVJ deformity were enrolled as normal controls to evaluate the prevalence of vertebral artery anomaly in a normal population. Chi-square test was utilized for comparing the prevalence of vertebral artery anomaly between these two groups.

Results

The incidence of PFIA was 25.6% (10/39), FEN was 7.7% (3/39), PICA was 5.1% (2/39), and the total incidence of extraosseous anomalous course of vertebral artery was 38.5% (15/39), significantly higher than that of control group, 7.0% (7/100) (P < 0.01). The incidence of high-riding vertebral artery and side-to-side asymmetry were 61.5% (24/39) and 30.8% (12/39), respectively. An irregular midline carotid artery loop was observed in five patients (12.8%).

Conclusion

Vertebral artery anomaly, which can be clearly depicted by CTA, is more frequent in BI patients. Preoperative CTA should be performed for this patient population to prevent vascular injury.

Graphical abstract

These slides can be retrieved under Electronic Supplementary Material.

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Titel: Evaluation of vertebral artery anomaly in basilar invagination and prevention of vascular injury during surgical intervention: CTA features and analysis
verfasst von: Shuaishuai Xu
Shidong Ruan
Xiaoyu Song
Jinyu Yu
Jianrong Xu
Ruozhen Gong
Publikationsdatum: 29.12.2017
Verlag: Springer Berlin Heidelberg
Erschienen in: European Spine Journal / Ausgabe 6/2018
Print ISSN: 0940-6719
Elektronische ISSN: 1432-0932
DOI: https://doi.org/10.1007/s00586-017-5445-4

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