Biomechanical comparative evaluation of percutaneous fixations with vertebral expansion for vertebral compression fractures: an experimental and finite element study
| Autor: | Nérot Agathe, Skalli Wafa, Simon Laurie, Rousseau Marc-Antoine, Persohn Sylvain, Le Gallo Lucas, V. P. C. Lima Lucas |
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| Rok vydání: | 2021 |
| Předmět: |
Lumbar Vertebrae
Materials science Percutaneous Finite Element Analysis Bone Cements Biomedical Engineering Bioengineering General Medicine Compression (physics) Spine Finite element study Finite element method Biomechanical Phenomena Computer Science Applications Comparative evaluation Human-Computer Interaction Posterior fixation Fractures Compression Humans Spinal Fractures Biomedical engineering |
| Zdroj: | Computer Methods in Biomechanics and Biomedical Engineering. 25:487-498 |
| ISSN: | 1476-8259 1025-5842 |
| DOI: | 10.1080/10255842.2021.1959919 |
| Popis: | This study uses in vitro experiments and validated finite element models (FEM) to analyze the effect of posterior fixation, alone or associated with expandable device (ED) and/or cement. 3-dimensional FEMs of intact, fractured and instrumented spine were built and compared with experimental load-displacement curves. FEM ranges of motion were within the experimental corridors. Stresses appeared sensitive to both implant configuration and fracture severity with a stress reduction up to 84%. The FEM highlighted that for a same instrumental strategy, different biomechanical performances were observed according to fracture severity. When bone continuity is altered, both ED and cement may be needed. |
| Databáze: | OpenAIRE |
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