ArticleBMC musculoskeletal disorders2025
Biomechanical effects of six internal fixation methods for distal femoral AO/OTA 33C1 fractures: finite element analysis.
Article in BMC musculoskeletal disorders, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed.
- Comparison of stress shielding between endobutton and screw fixation in the latarjet procedure using three-dimensional finite element analysis.Journal of orthopaedic surgery and research · 2026Article
- Optimizing plate working length and screw configuration for femoral shaft plate fixation: a finite element analysis under different bone quality scenarios.BMC musculoskeletal disorders · 2026Article
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Abstract
purposeUsing finite element analysis, to compare the stress and deformation of six different internal fixation methods for distal femoral fractures to obtain the optimal internal fixation method.
methodsCreate six groups based on different placement methods and fixation methods: 5-hole lateral plate (SP); 5-hole lateral plate + two medial screws (SP + D); 5-hole lateral plate + one trans-plate screw (SP + O); 5-hole lateral plate + one cross screw (SP + C); 5-hole lateral plate + elastic nail (SP + S); 5-hole lateral plate + medial T-shaped plate (SP + T). Observe the displacement distribution and maximum displacement at the fracture site, and stress distribution on the medial fracture fragment and internal fixation.
resultsAfter applying the load, mechanical indicators for internal fixation and bone blocks were obtained for all six models by finite element method. The model with a lateral single plate showed max internal fixation stress of 221.75 MPa, which was greater than other models. On the other hand, the model with a 5-hole lateral plate and medial T-shaped plate showed the smallest internal fixation stress (125.74 MPa) and the smallest total femoral deformation (0.99416 mm).
conclusionThe combination of a 5-hole lateral plate and a medial T-shaped plate demonstrated significant biomechanical advantage compared to the other five groups. Although the 5-hole lateral plate model is slightly inferior compared to the 5-hole lateral plate and medial T-shaped plate, it remains an effective and safe fixation solution for AO/OTA 33C1 type fractures.
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