Stresses and deformations of an osteosynthesis plate in a lateral tibia plateau fracture.
FEM simulation
biomechanics
lateral tibia plateau fracture
osteosynthesis
plate deformation
testing machine
Journal
Biomedizinische Technik. Biomedical engineering
ISSN: 1862-278X
Titre abrégé: Biomed Tech (Berl)
Pays: Germany
ID NLM: 1262533
Informations de publication
Date de publication:
23 Feb 2022
23 Feb 2022
Historique:
received:
27
05
2021
accepted:
26
11
2021
pubmed:
8
1
2022
medline:
8
2
2022
entrez:
7
1
2022
Statut:
epublish
Résumé
This study has the aim to investigate the strain and stress in an anterolateral locking plate applied for the fixation of a lateral split fracture. To simulate a complex fracture situation, three segments were separated. With a FEM analysis, representative places for strain and stress measurement were determined. A locked osteosynthesis plate was instrumented with strain gauges and tested on a fractured and a non-fractured Saw Bone model. To simulate different loading situations, four different points of force application, from the center of the condyles to a 15 mm posterior position, were used with a medial-lateral load distribution of 60:40. The simulations as well as the biomechanical tests demonstrated that two deformations dominate the load on the plate: a bending into posterior direction and a bulging of the plate head. Shifting the point of application to the posterior direction resulted in increasing maximum stress, from 1.16 to 6.32 MPa (FEM analysis) and from 3.04 to 7.00 MPa (biomechanical study), respectively. Furthermore, the comparison of the non-fractured and fractured models showed an increase in maximum stress by the factor 2.06-2.2 (biomechanical investigation) and 1.5-3.3 (FEM analysis), respectively.
Identifiants
pubmed: 34995435
pii: bmt-2021-0166
doi: 10.1515/bmt-2021-0166
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
43-52Informations de copyright
© 2021 Walter de Gruyter GmbH, Berlin/Boston.
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