Evidence map›Paper›PMID 29876707›Full record

ArticleEuropean radiology2018

Sacroiliac joints: anatomical variations on MR images.

Mazen El Rafei, Sammy Badr, Guillaume Lefebvre, Francois Machuron, Benoist Capon, Rene-Marc Flipo, Anne Cotten

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In one paragraph

Article in European radiology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed
4.2field-weighted citation impact, top 6% 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

34 citing papers in PubMed, 56 citations in OpenAlex.

  1. Trial
  2. The Canine Sacroiliac Joint: 2. Common Surface Variants.Anatomia, histologia, embryologia · 2026
    Article
  3. Article
  4. Observational
  5. Article
  6. Article
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  8. Sacroiliac joint variants are common and gender-specific but do not predict fracture pattern in pelvic ring injuries.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2026
    Article
  9. When it is not sacroiliitis.Skeletal radiology · 2025
    Review
  10. Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. The sacroiliac joint across ages - what is normal?Therapeutic advances in musculoskeletal disease · 2024
    Review
  16. Article
  17. Article
  18. Article
  19. Article
  20. Review
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

7 authors at 1 institution in 1 country.

Mazen El RafeiMusculoskeletal Radiology Department, Lille University Hospital, 59037, Lille, France.
Sammy BadrMusculoskeletal Radiology Department, Lille University Hospital, 59037, Lille, France.
Guillaume LefebvreMusculoskeletal Radiology Department, Lille University Hospital, 59037, Lille, France.
Francois MachuronUnite de methodologie biostatistique et data management Maison regionale de la recherche clinique CHRU Lille, Lille, France.
Benoist CaponMusculoskeletal Radiology Department, Lille University Hospital, 59037, Lille, France.
Rene-Marc FlipoDepartment of Rheumatology, Lille University Hospital, 59037, Lille, France.
Anne CottenMusculoskeletal Radiology Department, Lille University Hospital, 59037, Lille, France. anne.cotten@chru-lille.fr.
Université de Lille · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo describe the appearance of the anatomical variations of the sacroiliac joints (SIJ) on MR images and to highlight the potential MR features that might be misleading.

methodsConsecutive MRI examinations of SIJs performed at our department from January 2015 to December 2016 were retrospectively analyzed. As one of our goals was to describe potential misleading edematous or structural changes associated with SIJ anatomical variations, patients fulfilling the ASAS criteria were excluded from this study to ensure that signal intensity changes would not be related to sacroiliitis. Five anatomical variations and a dysmorphic appearance of the SIJ were detected.

resultsThe final group consisted of 157 patients. Unilateral or bilateral anatomical variations of the SIJ were found in 50 patients (accessory SIJ, iliosacral complex and sacral defect in 17, 18 and 21 patients, respectively, and synostosis in one patient). A dysmorphic appearance of the SIJ was found in 26 patients. No case of an unfused ossification centers was depicted. Structural and/or edematous changes of the facing bones were quite frequently observed in accessory and dysmorphic SIJ. Iliosacral complex and sacral defects could be associated with prominent vessels running along their bony surfaces.

conclusionSeveral anatomical variations of the SIJs are relatively commonly seen on MR images, particularly in females. These variations may be associated with signal intensity changes, which may be mechanical and not necessarily inflammatory in nature. KEY POINTS: • Anatomical variations of SIJ may involve the cartilaginous or ligamentous part of the joint • Anatomical variations of SIJ are sometimes associated with edematous and/or structural changes of the adjacent bone • Anatomical variations of the SIJ can be misleading on MR imaging.

Indexed as

AdolescentAdultAgedFemaleHumansMagnetic Resonance ImagingMaleMiddle AgedRetrospective StudiesSacroiliac JointSacroiliitisYoung AdultAnatomyBone marrow edemaMagnetic resonance imagingSacroiliac jointsSacroiliitis

Identifiers

PMID29876707
OpenAlexW2805349669

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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.