ArticleBioengineering (Basel, Switzerland)2024
Comparison of Three Internal Fixation Constructs for AO/OTA 33-A3 Distal Femoral Fractures: A Biomechanical Study.
Article in Bioengineering (Basel, Switzerland), 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Intramedullary nail design for Thais with novel multi-femur shape optimization approach.Scientific reports · 2026Article
- Preliminary retrospective analysis of combined retrograde tibial intramedullary nail and lateral less invasive stabilization system for distal femoral fractures.The Journal of international medical research · 2025Article
- Intramedullary Nailing in Femoral Diaphyseal Fractures: A Retrospective Multicenter Cohort Study.Life (Basel, Switzerland) · 2025Article
- Cementless long-stem fixation in periprosthetic clamshell fracture: a biomechanical investigation.Frontiers in bioengineering and biotechnology · 2025Article
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Authors and funding
9 authors.
Funding
Abstract
backgroundTo compare the biomechanical performance of three internal fixation constructs for AO/OTA 33-A3 distal femoral fractures.
methodsThirty AO/OTA 33-A3 synthetic distal femoral fracture models were constructed and randomly divided into three groups. Group A (dual-plate construct) was fixed with a medial locking plate combined with a less invasive stabilization system (LISS). Group B was fixed with a retrograde femoral nail (RFN) combined with an LISS (RFN + LISS construct), and Group C was fixed with a retrograde tibial nail (RTN) combined with an LISS (RTN + LISS construct). The axial displacement, axial stiffness, torsional displacement, torsional stiffness and maximum failure load of different internal fixation constructs were recorded and statistically analyzed.
resultsIn the axial compression test, the average stiffness of Group C was significantly higher than that of Groups A and B, and the average displacement of Group C was significantly smaller than that of Groups A and B. In the torsion test, the torsion degree of Group C was significantly lower than that of Groups A and B, and Group C had a higher torsional stiffness than Groups A and B. In the axial compression failure test, the average ultimate load (a displacement greater than 5 mm) of Group C was significantly higher than that of Groups A and B.
conclusionThe biomechanical strength of the RTN combined with a plate is higher than that of the RFN combined with plate and dual-plate constructs, which can be used as an internal fixation option for the treatment of comminuted distal femoral fractures.
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