ArticleBMC musculoskeletal disorders2024
Biomechanical effects of FNS on femoral neck fractures based on different reduction quality: finite element analysis.
Article in BMC musculoskeletal disorders, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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5 citing papers in PubMed.
- Four different fixation strategies for ipsilateral femoral neck and shaft fractures: a finite element analysis.Journal of orthopaedic surgery and research · 2026Article
- Article
- Biomechanical properties of off-axis screw in the treatment of vertical femoral neck fractures: a finite element analysis.BMC musculoskeletal disorders · 2025Article
- Effects of different reduction patterns on stress distribution in patients with intertrochanteric fractures with intramedullary nail fixation: a finite element analysis.Frontiers in bioengineering and biotechnology · 2025Article
- Comparison of clinical efficacy between proximal femoral locking plate and cannulated compression screws for femoral neck fracture.Frontiers in surgery · 2025Article
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7 authors.
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Abstract
BACKGROUND AND
objectiveThe femoral neck system (FNS) has been extensively studied and applied for the treatment of young patients with femoral neck fractures. The purpose of this study was to explore the biomechanical impact variations in reduction qualities on femoral neck fractures, considering factors such as tip-apex distance, the positioning of the bolt in the cortical corridor of the femoral neck, and bone mineral density. MATERIALS AND
methodsA randomly selected volunteer was recruited, whose clinical data on the femur were collected to establish finite element models for positive reduction, anatomical reduction, and negative reduction respectively. Based on the constructed models, different scenarios were established by varying the tip-apex distance, bone mineral density, and positioning of the bolt in the cortical corridor of the femoral neck. Under a vertical load of 2100 N, the displacement and Von Mises stress (VMS) distribution of each group of models were evaluated through simulation testing.
resultsUnder a load of 2100 N, the maximum VMS values of the femoral neck system and femoral head was recorded during negative reduction, 968.85 MPa and 80.09 MPa respectively. In addition, factors influencing the negative reduction of FNS and the femoral head were identified to be the tip-apex distance > 10 mm, the presence of osteoporosis, and the bolt positioned in the lower-middle to the third part of the cortical corridor of the femoral neck.
conclusionThe displacement and stress of negative reduction were greater than those of positive reduction and anatomical reduction when the tip-apex distance > 10 mm, and the bolt was situated in the lower-middle to the third part of the cortical corridor of the femoral neck, and in the presence of osteoporosis. This means that we recommend positive repositioning over negative repositioning when anatomical repositioning is not clinically feasible.
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