| Autor: |
Lucas, Le Gallo, Lucas, V. P. C. Lima, Sylvain, Persohn, Agathe, Nérot, Marc-Antoine, Rousseau, Laurie, Simon, Wafa, Skalli |
| Předmět: |
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| Zdroj: |
Computer Methods in Biomechanics & Biomedical Engineering; Apr2022, Vol. 25 Issue 5, p487-498, 12p |
| Abstrakt: |
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. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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