ArticleJournal of orthopaedic surgery and research2023
Biomechanical insights into ankle instability: a finite element analysis of posterior malleolus fractures.
Article in Journal of orthopaedic surgery and research, 2023. 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, 4 citations in OpenAlex.
- Investigation of acute and chronic injury mechanisms of the deltoid ligament: insights from finite element analysis and animal study.Journal of orthopaedic surgery and research · 2026Article
- Effects of graded talar external rotation on distal tibial articular surface stress and contact pressure: a finite element study.Frontiers in sports and active living · 2026Article
- Clinical efficacy analysis of elastic fixation for isolated ligamentous Lisfranc injuries.BMC surgery · 2025Article
- Biomechanical stability and stress distribution before talus prosthesis design: effects of ligament removal and cartilage overlay thickness using finite element analysis.European journal of medical research · 2025Article
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Authors and funding
7 authors at 1 institution in 1 country.
Funding
Abstract
backgroundPosterior malleolus fractures are known to be associated with ankle instability. The complexities involved in obtaining precise laboratory-based spatial pressure measurements of the ankle highlight the significance of exploring the biomechanical implications of these fractures.
methodsFinite element analysis was utilized to examine the stress distribution across the contact surface of the ankle joint, both in its natural state and under varied sagittal fracture line angles. The study aimed to identify stress concentration zones and understand the influence of sagittal angles on stress distribution.
resultsThree distinct stress concentration zones were identified on the ankle's contact surface: the anterolateral tibia, the anteromedial tibia, and the fracture line. The most significant stress was observed at the fracture line when a fracture occurs. Stress at the fracture line notably spikes as the sagittal angle decreases, which can potentially compromise ankle stability. Larger sagittal angles exhibited only minor stress variations at the contact surface's three vertices. It was inferred that sagittal angles below 60° might pose risks to ankle stability.
conclusionsThe research underscores the potential implications of fractures on the stress profile of the ankle joint, emphasizing the role of the contact surface in ensuring stability. The identification of three zones of stress concentration and the influence of sagittal angles on stress distribution offers a valuable reference for therapeutic decision-making. Further, the study reinforces the importance of evaluating sagittal fracture angles, suggesting that angles below 60° may compromise ankle stability.
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