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Biomechanical and anatomical considerations for dual plating of distal femur fractures: a systematic literature review

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

Introduction

Distal femur fractures are challenging injuries historically associated with high rates of nonunion and varus collapse with operative management. As a result, clinical and research interest in dual plating (DP) of distal femur fractures has seen a dramatic increase in recent years. The purpose of this study was to systematically review the literature regarding vascular anatomy and biomechanics of distal femur fractures treated with DP constructs.

Materials and methods

A systematic literature review of two medical databases (PubMed & Scopus) was performed to identify peer-reviewed studies on the anatomy and biomechanics regarding DP of distal femur fractures. A total of 1,001 papers were evaluated and 14 papers met inclusion criteria (6 anatomy and 8 biomechanics). Methodological quality scores were used to assess quality and potential bias in the included studies.

Results

In the biomechanical studies, DP constructs demonstrated greater axial and rotational stiffness, as well as less displacement and fewer incidences of failure compared to all other constructs. Vascular studies showed that the femoral artery crosses the mid-shaft femur approximately 16.0–18.8 cm proximal to the adductor tubercle and it is located on average 16.6–31.1 mm from the femoral shaft at this location, suggesting that medial plate application can be achieved safely in the distal femur. The methodological quality of the included studies was good for biomechanical studies (Traa score 79.1; range 53–92.5) and excellent for anatomical studies (QUACs score 81.9; range 69.0–88.5).

Conclusions

Existing biomechanics literature suggests that DP constructs are mechanically stronger than other constructs commonly used in the treatment of distal femur fractures. Furthermore, medial distal femoral anatomy allows for safe application of DP constructs, even in a minimally invasive fashion. Dual plating should be considered for patients with distal femur fractures that have risk factors for instability, varus collapse, or nonunion.

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Acknowledgements

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Authors and Affiliations

  1. Department of Orthopaedic Surgery, University of Utah, 590 Wakara Way, Salt Lake City, UT, 84108, USA

    Graham J. DeKeyser, Anne J. Hakim, Dillon C. O’Neill, Lucas S. Marchand & Justin M. Haller

  2. Department of Trauma and Orthopaedic Surgery, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20251, Hamburg, Germany

    Carsten W. Schlickewei

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  1. Graham J. DeKeyser
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Correspondence to Graham J. DeKeyser.

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DeKeyser, G.J., Hakim, A.J., O’Neill, D.C. et al. Biomechanical and anatomical considerations for dual plating of distal femur fractures: a systematic literature review. Arch Orthop Trauma Surg 142, 2597–2609 (2022). https://doi.org/10.1007/s00402-021-03988-9

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