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The prevalence of a prominent anterior inferior iliac spine

  • Orthopaedic Surgery
  • Published:
Archives of Orthopaedic and Trauma Surgery Aims and scope Submit manuscript

Abstract

Introduction

Impingement of the prominent anterior inferior iliac spine (AIIS) against the femoral neck has recently been described as another type of impingement. The purpose of this study is to provide a distribution of AIIS types using the classification proposed by Hetsroni and thus report on the prevalence of prominent types.

Materials and methods

A total of 400 patients were included in the study with an average age 27.3 ± 6.9 years (range 18–40). All patients received a whole-body polytrauma computer tomography (CT) scan in the emergency room (ER) upon arrival. The classification of AIIS proposed by Hetsroni et al., which describes three morphological types, was used. Type II and III were grouped as prominent types. The measurements were performed in all three planes by two examiners.

Results

Male to female ratio was 71:29. Type I was observed in 367 (91.7%) patients. Type II was observed in 31 (7.8%) patients and type III was observed in 2 (0.5%) patients, unilaterally. Prominent types were much more prevalent in men (10.5%) than in women (2.6%). The CT assessment demonstrated excellent intra- and interreliability (overall: 0.926, I/II: 0.906, III: 1.000).

Conclusion

A young population demonstrates a prevalence of a prominent AIIS of 11.5%. Prominent AIIS is more common in men than in women.

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Acknowledgements

We would like to thank Charlotte Sommer for her help with the measurements and data collection.

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Authors and Affiliations

  1. Center for Orthopedics and Traumatology, University Hospital Marburg, Baldingerstrasse, 35043, Marburg, Germany

    Antonio Klasan, Philipp Dworschak, Karl Friedrich Schüttler & Susanne Fuchs-Winkelmann

  2. Department of Orthopaedic Surgery, University Hospital St Etienne, Avenue Albert Raimond, 42270, Saint-Priest-en-Jarez, France

    Thomas Neri

  3. The Gallery, Sydney Orthopaedic Research Institute, Level 1, 445 Victoria Avenue, Chatswood, NSW, 2067, Australia

    Sven Edward Putnis

  4. Orthomedic Frankfurt Offenbach, Herrnstraße 57, 63065, Offenbach, Germany

    Markus D. Schofer & Thomas J. Heyse

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  1. Antonio Klasan
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Corresponding author

Correspondence to Antonio Klasan.

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Conflict of interest

Antonio Klasan has received research support from Implantcast, unrelated to this study. Thomas Neri has no conflicts of interest. Susanne Fuchs Winkelmann has no conflicts of interest. Swen Putnis has no conflicts of interest. Philipp Dworschak has no conflicts of interest. Karl Friedrich Schüttler has no conflicts of interest. Markus Schofer has been paid for presentations for Depuy and Smith & Nephew. Thomas Heyse has been paid for presentations for Smith & Nephew, Zimmer Biomet and Implantcast. He has received research support from Smith & Nephew, Zimmer Biomet and Implantcast. He is a consultant to Smith & Nephew.

Ethical approval

The authors’ university board of ethics reviewed the study and approved the study (0711/2017). The study was performed at the University Hospital Marburg, Center for Orthopedics and Traumatology, Baldingerstrasse, 35043 Marburg, Germany.

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Klasan, A., Neri, T., Putnis, S.E. et al. The prevalence of a prominent anterior inferior iliac spine. Arch Orthop Trauma Surg 139, 1045–1049 (2019). https://doi.org/10.1007/s00402-019-03146-2

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