Evidence map›Paper›PMID 33881642›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 Society2021

Correlation of supine MRI and standing radiographs for cervical sagittal balance in myelopathy patients: a cross-sectional study.

Catherine Boudreau, Sylvine Carrondo Cottin, Jessica Ruel-Laliberté, David Mercier, Nicholas Gélinas-Phaneuf, Jérôme Paquet

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In one paragraph

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, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT07541586 (Position- and Measurement-Dependent Differences in Cervical Lordosis), which is not on this map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
–field-weighted citation impact
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.

NCT07541586 active not recruitingnot on this mapstarted 2025, after this paper: background citation

Position- and Measurement-Dependent Differences in Cervical Lordosis: A Comparative Analysis of Standing Radiographs and Supine MRI

TypeobservationalSponsorMedipol UniversityRan2025 to 2026Enrolled58ConditionsCervical Lordosis, Lordosis, Postural, Radiographic StudyArmsNo intervention
3 · Its place in the literature

Who cites it

12 citing papers in PubMed.

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  6. Observational
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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.

Catherine BoudreauDepartment of Neurosciences, CHU de Québec - Université Laval Research center, Quebec, QC, Canada.
Sylvine Carrondo CottinDepartment of Neurosciences, CHU de Québec - Université Laval Research center, Quebec, QC, Canada.ORCID 0000-0002-4554-7099
Jessica Ruel-LalibertéDepartment of Neurosciences, CHU de Québec - Université Laval Research center, Quebec, QC, Canada.
David MercierHôpital de L'Enfant-Jésus, Neurosurgery, CHU de Québec - Université Laval, 1401 18e rue, Quebec, QC, G1J1Z4, Canada.
Nicholas Gélinas-PhaneufHôpital de L'Enfant-Jésus, Neurosurgery, CHU de Québec - Université Laval, 1401 18e rue, Quebec, QC, G1J1Z4, Canada.
Jérôme PaquetDepartment of Neurosciences, CHU de Québec - Université Laval Research center, Quebec, QC, Canada. jerome_paquet@yahoo.ca.ORCID 0000-0003-1390-2428

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeCervical sagittal alignment is correlated with myelopathy severity and used by spinal surgeons for surgical planification. Magnetic resonance imaging (MRI) is the gold standard for the evaluation of cervical myelopathy but may not be for the assessment of cervical sagittal balance compared to X-rays. The objective of this study was to assess the correlation of cervical alignment between supine MRI and standing radiographs in patients with cervical spondylotic myelopathy (CSM).

methodsCobb, Jackson and Harrison methods were used to measure cervical sagittal alignment on supine MRI and standing radiographs of CSM adults. Cervical alignment was divided based on Cobb angle values on lordotic (> 4°), kyphotic (< - 4°) and rectitude (- 4° to 4°). Correlations between radiographic and MRI measurements were determined. Intra- and interobserver reliability were assessed and MRI and X-Ray-measured angles were compared.

resultsOne hundred and thirty patients with CSM were reviewed. Correlations of cervical lordosis measures between radiographs and MRI were strong using the Cobb (0.65) and Jackson (0.63) methods, and moderate using the Harrison (0.37) method. Mean cervical lordosis angle was significantly lower on supine MRI compared to standing radiographs for all methods (Cobb 11.6 Rx vs. 9.2 MRI, Jackson 14.6 vs. 11.6, Harrison 23.5 vs. 19.9). Eighteen patients (15.4%) without lordosis on supine MRI presented lordosis on standing radiographs.

conclusionA substantial proportion of patients has sagittal alignment discrepancies between supine MRI and standing radiographs. Therefore, standing radiographs of the cervical spine should always be included in surgical planning of CSM patients.

Indexed as

LordosisSpinal Cord DiseasesAdultCervical VertebraeCross-Sectional StudiesHumansMagnetic Resonance ImagingReproducibility of ResultsCervical spine alignmentCervical spondylotic myelopathy (CSM)Cobb angleStanding radiographsSupine MRI

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Registered trials

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.