Evidence map›Paper›PMID 29455293›Full record

ArticleEuropean spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society2018

Variations of transverse foramina in cervical vertebrae: what happens to the vertebral artery?

Aristeidis Zibis, Vasileios Mitrousias, Nikolaos Galanakis, Nikoletta Chalampalaki, Dimitrios Arvanitis, Apostolos Karantanas

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Article in European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
3.8field-weighted citation impact, top 7% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

15 citing papers in PubMed, 33 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 3 institutions in 1 country.

Aristeidis ZibisDepartment of Anatomy, School of Health Sciences, University of Thessaly, 41110, Larissa, Greece.ORCID 0000-0001-7122-4317
Vasileios MitrousiasDepartment of Anatomy, School of Health Sciences, University of Thessaly, 41110, Larissa, Greece.ORCID 0000-0002-2040-6804
Nikolaos GalanakisDepartment of Medical Imaging, University Hospital, 71003, Heraklion, Crete, Greece.ORCID 0000-0001-9878-6053
Nikoletta ChalampalakiDepartment of Medical Imaging, University Hospital, 71003, Heraklion, Crete, Greece.
Dimitrios ArvanitisDepartment of Anatomy, School of Health Sciences, University of Thessaly, 41110, Larissa, Greece.
Apostolos KarantanasDepartment of Medical Imaging, University Hospital, 71003, Heraklion, Crete, Greece. akarantanas@gmail.com.
University of Thessaly · GRUniversity Hospital of Heraklion · GRUniversity of Crete · GR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThe purpose of this study is to examine variations of the foramen transversarium and the vertebral artery in computed tomography angiographies (CTa) of the cervical spine, investigate their coexistence, and present possible considerations regarding such variations in spine surgical procedures.

methodsFifty CTa of the neck were retrospectively reviewed. Transverse and anteroposterior diameter of the foramen and diameter of the vertebral artery were measured. Variations of the foramen and the vertebral artery were detected.

resultsCervical CTa of 32 males and 18 females (mean age 66.4 ± 10.78 years), all belonging to the Indo-European race, were reviewed. Variations of the foramen transversarium were found in 17 vertebrae (4.85%) of 15 patients (30%). Duplication of the foramen was the most frequent variation, followed by the open foramen, the absence of the foramen, the triple foramen, and the hypoplastic foramen. Variations of the vertebral artery were found in 7 patients (14%) and asymmetry was found in 12 (24%) patients. Moreover, six patients presented with hypoplastic vertebral arteries (12%). When examining coexistence, 60% of patients exhibiting variations in the transverse foramen were also exhibiting variations or asymmetry in the vertebral artery, compared to 25.7% of patients with no foramen variations (p = 0.02).

conclusionsVertebral artery injury is not common but may be a disastrous complication during cervical spine surgery. Proper preoperative planning is essential for any surgeon and exact knowledge of the anatomy in each patient is essential. This study strongly recommends the preoperative use of a CTa when suspicion of a variation is present and implied by a foramen variation. These slides can be retrieved under Electronic Supplementary Material.

Indexed as

AdultAgedAged, 80 and overAnatomic VariationCervical VertebraeComputed Tomography AngiographyFemaleHumansMaleMiddle AgedNeurosurgical ProceduresRetrospective StudiesVertebral ArteryAnatomic variantsComputed tomography/angiographySpine cervical/vertebraeTransverse foraminaVertebral arteries/variants

Identifiers

PMID29455293
OpenAlexW2788427820

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.