Abstract
Purpose
This retrospective study aimed to assess the impact of distal nail placement on misalignment and healing rates in distal tibial fractures.
Methods
We reviewed all patients with distal tibial fracture treated with intramedullary nailing between 2015 and 2021, and a minimum follow-up of 12 months. Distal nail positioning was determined according to the Triantafillou zones. We related these positioning zones to misalignments (alignment ≥ 3°) and too bony union disorders (delayed union, non-union).
Results
Out of the 62 patients included, 56 (90.3%) show bone union without additional procedure, 3 (4.8%) with dynamization, and 3 (4.8%) showed non-union. Twenty-one (33.8%) presented misalignment, with valgus in the coronal plane being the most frequent (76.19%). In patients with and without misalignment, the most frequent distal nail position was 2–2 in 47.6% and 80.5%, respectively (p = 0.01). In multivariate analysis, distal nail positioning in the 2–2 zone showed a significant protective effect against misalignment (OR 0.18; p = 0.018), while nail positioning in the 3–2 zone generated a significant risk of misalignment (OR 18.55; p = 0.009).
Conclusion
In intramedullary nailing of distal tibial fractures, distal positioning of the nail slightly lateral to the center of the talus in the coronal plane and slightly posterior in the sagittal plane (zone 2–2) allows high alignment percentages to be obtained. Positioning medial to this point in the coronal plane (zone 3) is associated with more significant misalignment and should be avoided.
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Availability of data and material
All data generated and analyzed during this study are included in this published article and are available from the corresponding author on reasonable request.
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All authors contributed to the study´s conception and design. Material preparation, data collection, and analysis were performed by German Garabano, Adrian Jaime, and Leonel Perez Alamino. The first draft of the manuscript was written by German Garabano and Adrian Jaime. All authors read and approved the final manuscript.
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Garabano, G., Jaime, A., Alamino, L.P. et al. Does the distal nail position impact the rates of misalignment and bone union in distal tibial fractures?. Eur J Orthop Surg Traumatol 33, 3365–3371 (2023). https://doi.org/10.1007/s00590-023-03566-2
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DOI: https://doi.org/10.1007/s00590-023-03566-2