Evidence map›Paper›PMID 41711917›Full record

ArticleEuropean journal of orthopaedic surgery & traumatology : orthopedie traumatologie2026

Sacroiliac joint variants are common and gender-specific but do not predict fracture pattern in pelvic ring injuries.

Marie Le Baron, Guillaume David, Byron A Ward, Cyril Mauffrey

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Article in European journal of orthopaedic surgery & traumatology : orthopedie traumatologie, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Not yet cited in PubMed.

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5 · Who and what money

Authors and funding

4 authors.

Marie Le BaronInstitute for Locomotion, Department of Orthopedics and Traumatology, Marseille Public University Hospital System, Marseille, France.
Guillaume DavidDepartment of Orthopedics and Traumatology, Centre Hospitalier Universitaire d'Angers, Angers, France.
Byron A WardDepartment of Orthopedics, Denver Health Medical Center, Denver, USA.
Cyril MauffreyDepartment of Orthopedics, Denver Health Medical Center, Denver, USA. mauffreyc@gmail.com.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesTo investigate the prevalence of sacroiliac joint (SIJ) anatomical variants in a North American pelvic fracture population and assess associations with fracture patterns and patient demographics.

methodsDesign Retrospective cohort study.

settingLevel I academic trauma center in North America. PATIENTS/

participants270 adult patients who sustained unilateral pelvic ring injury and underwent operative fixation from March 2016 to April 2025.

interventionPostoperative CT scans were used to classify SIJ morphology into eight anatomical variants and assess for sacral dysmorphism. MAIN OUTCOME MEASUREMENTS: Prevalence and distribution of SIJ variants, and their correlation with gender, age, and fracture patterns (Young-Burgess and OTA/AO classifications).

resultsAn SIJ variant was present in 74.1% of patients, with semi-circular defect (24.4%) and ilio-sacral complex (21.5%) being the most common. Women more frequently exhibited variant types. Older patients had a higher prevalence of accessory SIJ variants. No significant correlation was found between SIJ anatomy and fracture classification.

conclusionSIJ anatomical variants are highly prevalent in pelvic trauma patients and differ by gender and age. Although these variants did not correlate directly with fracture patterns, they may influence joint biomechanics and should be considered in trauma evaluation and surgical planning. LEVEL OF EVIDENCE: level III, retrospective cohort study.

Indexed as

Anatomic VariationFractures, BonePelvic BonesSacroiliac JointAdolescentAdultAgedAge FactorsFemaleHumansMaleMiddle AgedPrevalenceRetrospective StudiesSex FactorsTomography, X-Ray ComputedAnatomical variantFracture patternPelvic ring injurieSacroiliac joint

Identifiers

PMID41711917

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