MR-compatible loading device for assessment of heel pad internal tissue displacements under shearing load

Autor: Yohan Payan, Antoine Perrier, Mathieu Bailet, Alessio Trebbi
Přispěvatelé: Biomécanique des Tissus Vivants et des Matériaux – Modélisation et Caractérisation (TIMC-BIOMÉCA), Translational Innovation in Medicine and Complexity / Recherche Translationnelle et Innovation en Médecine et Complexité - UMR 5525 (TIMC ), VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)
Rok vydání: 2021
Předmět:
Heel
Finite Element Analysis
0206 medical engineering
Mr compatible
Biomedical Engineering
Biophysics
FOS: Physical sciences
02 engineering and technology
03 medical and health sciences
0302 clinical medicine
medicine
Humans
Polymeric springs
Plantar pressure
[PHYS.MECA.BIOM]Physics [physics]/Mechanics [physics]/Biomechanics [physics.med-ph]
Pressure ulcers
Shearing (manufacturing)
Pressure Ulcer
Artifact (error)
Deformation (mechanics)
business.industry
Soft tissue deformations
[SPI.MECA.BIOM]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Biomechanics [physics.med-ph]
Structural engineering
Compression (physics)
Physics - Medical Physics
Magnetic Resonance Imaging
020601 biomedical engineering
Finite element method
Biomechanical Phenomena
medicine.anatomical_structure
[SDV.IB]Life Sciences [q-bio]/Bioengineering
Medical Physics (physics.med-ph)
Mr images
business
030217 neurology & neurosurgery
Geology
Zdroj: Medical Engineering and Physics
Medical Engineering and Physics, Elsevier, 2021, 98, pp.125-132. ⟨10.1016/j.medengphy.2021.11.006⟩
ISSN: 1350-4533
DOI: 10.48550/arxiv.2111.07622
Popis: International audience; In the last decade, the role of shearing loads has been increasingly suspected to play a determinant impact in the formation of deep pressure ulcers. In vivo observations of such deformations are complex to obtain. Previous studies only provide global measurements of such deformations without getting the quantitative values of the loads that generate these deformations. To study the role that shearing loads have in the aetiology of heel pressure ulcers, an MR-compatible device for the application of shearing and normal loads was designed. Magnetic resonance imaging is a key feature that allows to monitor deformations of soft tissues after loading in a non-invasive way. Measuring applied forces in an MR-environment is challenging due to the impossibility to use magnetic materials. In our device, forces are applied through the compression of springs made in polylactide. Shearing and normal loads were applied on the plantar skin of the human heel by means of an indenting plate while acquiring MR images. The device materials did not introduce any imaging artifact and allowed for high quality MR measurements permitting to identify the deformation of the internal components of the heel. The obtained subject-specific results are an original data set that can be used in validations for Finite Element analysis and therefore contribute to a better understanding of the factors involved in pressure ulcer development.
Databáze: OpenAIRE
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