Unravelling the hip-spine dilemma from the CHECK-cohort: Is sagittal pelvic morphology linked to radiographic signs of femoroacetabular impingement?

Joost H.J. van Erp*, Willem Paul Gielis, Vahid Arbabi, Arthur de Gast, Harrie Weinans, Laurens Kaas, René M. Castelein, Tom P.C. Schlösser

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

Introduction: To date the aetiology of femoroacetabular impingement (FAI) is still not completely understood. There are mechanical theories that suggest symptomatic FAI is linked to sagittal pelvic morphology and spinopelvic-femoral dynamics. The aim of this study is to evaluate the relation of sagittal pelvic morphology and orientation to radiographic signs of FAI. Additionally, we test whether the relation between FAI and spinopelvic parameters differs in osteoarthritic hips. Methods: From a prospective, observational cohort study, 1002 patients between 45 and 65 years old with a first episode of knee or hip pain were followed for 8 years. All patients who had lateral lumbar radiographs and clinical and radiographic follow-up of the hips were included in the present study. Range of internal rotation of the hip as well as radiographic signs of FAI (alpha and Wiberg angle) and presence of hip osteoarthritis (Kellgren and Lawrence) were systematically measured at baseline. Pelvic incidence (PI), pelvic tilt (PT), sacral slope (SS)) were measured at 8-year follow-up. Associations between PI, PT, SS and FAI parameters were tested using generalised estimating equations. Results: 421 subjects, 842 hips, were included. No significant relations between PI, PT or SS and alpha or Wiberg angle were found. Comparison of hips with and without radiological sign(s) of FAI showed no differences in PI, PT or SS. There was no relation between range of internal rotation of the hip and spinopelvic parameters. Conclusion: Sagittal pelvic morphology and orientation are not related to the presence of radiological signs of FAI in this study population.

Original languageEnglish
Pages (from-to)1079-1085
Number of pages7
JournalHIP International
Volume33
Issue number6
DOIs
Publication statusPublished - 2023

Bibliographical note

Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care
Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Keywords

  • FAI
  • femoroacetabular impingement
  • pelvic incidence
  • pelvic morphology

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