Evidence map›Paper›PMID 34989876›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 Society2022

Variation of cervical sagittal alignment parameters according to gender, pelvic incidence and age.

Yann Philippe Charles, Solène Prost, Sébastien Pesenti, Brice Ilharreborde, Eloïse Bauduin, Féthi Laouissat, Guillaume Riouallon, Stéphane Wolff, Vincent Challier, Ibrahim Obeid and 16 more

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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, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
4.4field-weighted citation impact, top 5% 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, 24 citations in OpenAlex.

  1. Article
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  3. Comparison of cervical sagittal alignment in normal subjects and adolescents and young adults with idiopathic scoliosis.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 · 2026
    Article
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  5. Sex-dependent evolution of whole-body postural alignment with age.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 · 2026
    Article
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  12. C4 constant vertebra: a novel benchmark of physiological cervical sagittal alignment.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 · 2024
    Article
  13. Article
  14. Age-related changes in cervical sagittal alignment: based on 625 Chinese asymptomatic subjects.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 · 2023
    Article
  15. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

26 authors at 11 institutions in 1 country.

Yann Philippe CharlesService de Chirurgie du Rachis, Hôpitaux Universitaires de Strasbourg, Université de Strasbourg, 1 Avenue Molière, 67200, Strasbourg, France. YannPhilippe.CHARLES@chru-strasbourg.fr.ORCID 0000-0002-0606-211X
Solène ProstUnité de Chirurgie Rachidienne, CHU Timone, Aix-Marseille Université, Marseille, France.ORCID 0000-0002-3500-0655
Sébastien PesentiService d'Orthopédie Pédiatrique, CHU Timone, Aix-Marseille Université, Marseille, France.ORCID 0000-0003-2230-2811
Brice IlharrebordeService de Chirurgie Orthopédique Pédiatrique, AP-HP, CHU Robert Debré, Université de Paris, Paris, France.ORCID 0000-0002-7245-8366
Eloïse BauduinService de Chirurgie Orthopédique et Traumatologie, Hôpital Maison Blanche, CHU de Reims, Reims, France.
Féthi LaouissatHôpital Privé de L'Est Lyonnais, Saint-Priest, France.ORCID 0000-0001-8151-7340
Guillaume RiouallonService de Chirurgie Orthopédique et Traumatolgique, Groupe Hospitalier Paris Saint Joseph, Paris, France.ORCID 0000-0003-4499-621X
Stéphane WolffService de Chirurgie Orthopédique et Traumatolgique, Groupe Hospitalier Paris Saint Joseph, Paris, France.ORCID 0000-0002-0152-5816
Vincent ChallierHôpital Privé du Dos Francheville, Périgueux, France.ORCID 0000-0002-0074-9244
Ibrahim ObeidClinique du Dos Jean Villar, Bruges, France.ORCID 0000-0002-5602-0508
Louis BoissièreClinique du Dos Jean Villar, Bruges, France.
Emmanuelle FerreroService de Chirurgie Orthopédique de la Colonne Vertébrale, AP-HP, Hôpital Européen Georges-Pompidou, Université de Paris, Paris, France.ORCID 0000-0003-3357-306X
Federico SollaService d'Orthopédie Pédiatrique, Fondation Lenval, Nice, France.ORCID 0000-0003-2735-5330
Jean-Charles Le HuecPolyclinique Bordeaux Nord Aquitaine, Université de Bordeaux, Bordeaux, France.ORCID 0000-0002-0463-6706
Stéphane BourretPolyclinique Bordeaux Nord Aquitaine, Université de Bordeaux, Bordeaux, France.ORCID 0000-0002-4385-3172
Joe FaddoulInstitut de la Colonne Vertébrale et des Neurosciences, Centre Médico-Chirurgical Bizet, Paris, France.ORCID 0000-0002-8660-4029
Georges Naïm Abi LahoudInstitut de la Colonne Vertébrale et des Neurosciences, Centre Médico-Chirurgical Bizet, Paris, France.ORCID 0000-0002-5229-0463
Vincent FièreCentre Orthopédique Santy, Unité du Rachis, Lyon, France.ORCID 0000-0002-3989-799X
Michiel Vande KerckhoveCentre Orthopédique Santy, Unité du Rachis, Lyon, France.ORCID 0000-0002-5810-094X
Matthieu CampanaService de Chirurgie Orthopédique Pédiatrique, AP-HP, CHU Robert Debré, Université de Paris, Paris, France.
Jonathan LebharInstitut Locomoteur de L'Ouest Rachis, Centre Hospitalier Privé Saint-Grégoire, Saint-Grégoire, France.ORCID 0000-0001-7606-210X
Hadrien GiorgiInstitut Méditerranéen du Dos, Marseille, France.ORCID 0000-0002-3580-846X
Aymeric FaureInstitut Méditerranéen du Dos, Marseille, France.ORCID 0000-0002-6484-2122
Erik André SauleauPôle Santé Publique, Hôpitaux Universitaires de Strasbourg, Strasbourg, France.ORCID 0000-0003-1178-1060
Benjamin BlondelUnité de Chirurgie Rachidienne, CHU Timone, Aix-Marseille Université, Marseille, France.ORCID 0000-0001-8896-5277
French Spine Surgery Society (SFCR)
Aix-Marseille Université · FRUniversité Paris Cité · FRCentre Orthopédique Santy · FRHôpital Paris Saint-Joseph · FRHôpitaux Universitaires de Strasbourg · FRInstitut de Neurobiologie de la Méditerranée · FRUniversité de Bordeaux · FRCentre Hospitalier privé Saint Grégoire · FRCentre Hospitalier Universitaire de Reims · FRFondation Lenval · FRHôpital Privé Jean Mermo · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThe aim was to describe radiographic cervical sagittal alignment variations according to age, gender and pelvic incidence (PI) and to investigate relationships with thoracic alignment.

methodsA total of 2599 individuals (5-93 years) without spinal deformity were studied. Cranial cervical parameters were: McGregor slope, occipita-C2 angle, McGregor-C2 lordosis and C1-C2 lordosis. Caudal cervical parameters were: C2-C7, cranial arch and caudal arch lordosis and C7- and T1-slope. A Bayesian inference compared parameter distributions. Correlations with spinopelvic and global alignment parameters were investigated.

resultsAmong cranial cervical parameters, variations of McGregor slope were non-significant. McGregor-C2 lordosis and C1-C2 lordosis were smaller in males and increased significantly during growth, whereas the occipito-C2 angle decreased (Pr > 0.95). The occipito-C2 angle was larger and McGregor-C2 lordosis was smaller in low PI (Pr > 0.95). Among caudal cervical parameters, C2-C7 lordosis and C7- and T1-slope were larger in males and increased after 50 years (Pr > 0.95). Lordosis changes were non-significant in the cranial arch, whereas values increased in the caudal arch after 35 years (Pr > 0.95). Caudal parameter differences were non-significant between PI groups. Strong correlations existed between C2-C7, caudal arch lordosis, C7-slope, T1-slope and thoracic kyphosis. The sagittal vertical axis C2 correlated with caudal arch lordosis and T1-slope (ρ > 0.5; Pr > 0.95).

conclusionCervical alignment parameters vary according to age, gender and PI. In the cranial cervical spine, changes occur mainly during growth. In the caudal cervical spine, lordosis increases in the caudal arch, which is related to thoracic kyphosis increase with age. The caudal cervical arch acts as a compensatory segment by progressive extension, allowing horizontal gaze.

Indexed as

KyphosisLordosisBayes TheoremCervical VertebraeHumansMaleThoracic VertebraeAgeCervical spineGenderPelvic incidenceRadiographic parametersSagittal alignment

Identifiers

PMID34989876
OpenAlexW4205725101

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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.