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What Are the Patterns of Injury and Displacement Seen in Lateral Compression Pelvic Fractures?

  • Symposium: Disruptions of the Pelvic Ring: An Update
  • Published:
Clinical Orthopaedics and Related Research®

Abstract

Background

Lateral compression (LC)-type pelvic fractures encompass a wide spectrum of injuries. Current classification systems are poorly suited to help guide treatment and do not adequately describe the wide range of injuries seen in clinical practice.

Questions/purposes

We therefore (1) defined the spectrum of injuries that compose LC fractures with respect to both anterior and posterior ring injuries, with particular focus on the morphology of sacral fractures, and (2) identified fracture patterns associated with displacement at presentation.

Methods

We retrospectively reviewed 318 LC pelvic fractures. Displacement of the anterior pelvic ring was identified and measured on plain radiographs and posterior displacement was identified by CT.

Results

All 318 patients had an anterior injury and all but 13 (4%) had a posterior injury; 263 of the 318 fractures (87%) included a sacral fracture, with 162 of 318 (51%) having an anterior incomplete sacral fracture, 53 (17%) a complete simple fracture, and 48 (15%) a complete comminuted fracture. Forty-two of 318 (13%) had a crescent fracture. One hundred six of 318 (33%) were displaced at presentation. There was a higher incidence of initial displacement observed in fractures including bilateral rami fractures, a comminuted sacral fracture, or a crescent fracture.

Conclusions

LC pelvic fractures represent a heterogeneous group of injuries with a wide range of associated fracture patterns. In particular, there is a wide range of fracture types represented by injuries classified as LC1 (involving any sacral fracture). Fractures with more complex sacral fractures, crescent fractures, or bilateral pubic rami fractures tend to have higher degrees of initial displacement.

Level of Evidence

Level IV, diagnostic study. See Instructions for Authors for a complete description of levels of evidence.

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Acknowledgments

We thank our research coordinator Jordan Morgan and our research interns Philip Johnson and Katrina Hacker for gathering and organizing the radiographic data for our review.

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Authors and Affiliations

  1. Department of Orthopaedic Surgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA

    Michael J. Weaver MD & Eugene Toney MD

  2. Department of Orthopaedic Surgery, Massachusetts General Hospital, Harvard Medical School, 55 Fruit Street, YAW 3, Boston, MA, 02114, USA

    Wendy Bruinsma MD, Erica Dafford MD & Mark S. Vrahas MD

Authors
  1. Michael J. Weaver MD
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  2. Wendy Bruinsma MD
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  3. Eugene Toney MD
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  4. Erica Dafford MD
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  5. Mark S. Vrahas MD
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Corresponding author

Correspondence to Mark S. Vrahas MD.

Additional information

Each author certifies that he or she, or a member of their immediate family, has no commercial associations (eg, consultancies, stock ownership, equity interest, patent/licensing arrangements, etc) that might pose a conflict of interest in connection with the submitted article.

All ICMJE Conflict of Interest Forms for authors and Clinical Orthopaedics and Related Research editors and board members are on file with the publication and can be viewed on request.

Each author certifies that his or her institution approved the human protocol for this investigation, that all investigations were conducted in conformity with ethical principles of research, and that informed consent for participation in the study was obtained.

This work was performed at Brigham and Women’s Hospital and Massachusetts General Hospital, affiliated with Harvard Medical School, in Boston, MA, USA.

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Weaver, M.J., Bruinsma, W., Toney, E. et al. What Are the Patterns of Injury and Displacement Seen in Lateral Compression Pelvic Fractures?. Clin Orthop Relat Res 470, 2104–2110 (2012). https://doi.org/10.1007/s11999-012-2364-x

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  • DOI: https://doi.org/10.1007/s11999-012-2364-x

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