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  4. Stresses and deformations of an osteosynthesis plate in a lateral tibia plateau fracture
 
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Stresses and deformations of an osteosynthesis plate in a lateral tibia plateau fracture

Publikationstyp
Journal Article
Date Issued
2022-01-01
Sprache
German
Author(s)
Münch, Matthias  
Barth, Tobias  
Studt, Annika  
Dehoust, Julius  
Seide, Klaus  
Hartel, Maximilian  
Frosch, Karl-Heinz  
Institut
Integrierte Schaltungen E-9  
TORE-URI
http://hdl.handle.net/11420/11722
Journal
Biomedizinische Technik  
Volume
67
Issue
1
Start Page
43
End Page
57
Citation
Biomedizinische Technik 67 (1): 43-52 (2022-02-01)
Publisher DOI
10.1515/bmt-2021-0166
Scopus ID
2-s2.0-85122621622
PubMed ID
34995435
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.
Subjects
biomechanics
FEM simulation
lateral tibia plateau fracture
osteosynthesis
plate deformation
testing machine
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