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Biomechanical analysis of a transiliac internal fixator

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Abstract

Purpose

We evaluated the biomechanical characteristics of the transiliac internal fixator (TIFI) as compared to two well-established methods of internal posterior pelvic ring fixation.

Methods

Six freshly frozen human pelves were used for simulated single-leg stance loading of an AO type C injury model (pubic symphysis diastasis and unilateral sacroiliac joint disruption). The symphysis rupture was stabilized with a dynamic compression plate. Afterwards the three internal stabilization systems (TIFI, iliosacral screws and ventral plate osteosynthesis) were analysed. Fragment movement was measured in a contact-free manner with a stereophotometric infrared system.

Results

No significant differences in the three-dimensional deformation tolerated by the TIFI as compared to the other internal fixation systems were found.

Conclusions

The transiliac internal fixator provides the same biomechanical stability as the other reference implants tested. We suggest the use of this device as a suitable alternative to the other implants.

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Conflict of interest

The authors declare that they have no conflict of interest.

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Authors and Affiliations

  1. Department of Trauma Surgery, University Hospital Regensburg, Franz-Josef-Strauss-Allee 11, 93053, Regensburg, Germany

    Thomas Dienstknecht, Arne Berner, Johannes Zellner, Michael Mueller & Michael Nerlich

  2. Department of Trauma Surgery, Orthopaedics and Sports Medicine, Hospital Barmherzige Brueder Regensburg, Pruefeninger Strasse 86, 93049, Regensburg, Germany

    Bernd Fuechtmeier

  3. Department of Trauma Surgery, University Hospital Rechts der Isar, Ismaninger Strasse 22, 81675, Muenchen, Germany

    Andreas Lenich

Authors
  1. Thomas Dienstknecht
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  2. Arne Berner
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  3. Andreas Lenich
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  4. Johannes Zellner
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  5. Michael Mueller
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  6. Michael Nerlich
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  7. Bernd Fuechtmeier
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Correspondence to Thomas Dienstknecht.

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Dienstknecht, T., Berner, A., Lenich, A. et al. Biomechanical analysis of a transiliac internal fixator. International Orthopaedics (SICOT) 35, 1863–1868 (2011). https://doi.org/10.1007/s00264-011-1251-5

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  • DOI: https://doi.org/10.1007/s00264-011-1251-5

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