Mechanical metric for skeletal biomechanics derived from spectral analysis of stiffness matrix

Abstract A new metric for the quantitative and qualitative evaluation of bone stiffness is introduced. It is based on the spectral decomposition of stiffness matrix computed with finite element method. The here proposed metric is defined as an amplitude rescaled eigenvalues of stiffness matrix. The...

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Autores principales:	Petr Henyš, Michal Kuchař, Petr Hájek, Niels Hammer
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/a65b99269c3744e69289eb0848483545
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spelling	oai:doaj.org-article:a65b99269c3744e69289eb08484835452021-12-02T14:53:34ZMechanical metric for skeletal biomechanics derived from spectral analysis of stiffness matrix10.1038/s41598-021-94998-52045-2322https://doaj.org/article/a65b99269c3744e69289eb08484835452021-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-94998-5https://doaj.org/toc/2045-2322Abstract A new metric for the quantitative and qualitative evaluation of bone stiffness is introduced. It is based on the spectral decomposition of stiffness matrix computed with finite element method. The here proposed metric is defined as an amplitude rescaled eigenvalues of stiffness matrix. The metric contains unique information on the principal stiffness of bone and reflects both bone shape and material properties. The metric was compared with anthropometrical measures and was tested for sex sensitivity on pelvis bone. Further, the smallest stiffness of pelvis was computed under a certain loading condition and analyzed with respect to sex and direction. The metric complements anthropometrical measures and provides a unique information about the smallest bone stiffness independent from the loading configuration and can be easily computed by state-of-the-art subject specified finite element algorithms.Petr HenyšMichal KuchařPetr HájekNiels HammerNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Petr Henyš Michal Kuchař Petr Hájek Niels Hammer Mechanical metric for skeletal biomechanics derived from spectral analysis of stiffness matrix
description	Abstract A new metric for the quantitative and qualitative evaluation of bone stiffness is introduced. It is based on the spectral decomposition of stiffness matrix computed with finite element method. The here proposed metric is defined as an amplitude rescaled eigenvalues of stiffness matrix. The metric contains unique information on the principal stiffness of bone and reflects both bone shape and material properties. The metric was compared with anthropometrical measures and was tested for sex sensitivity on pelvis bone. Further, the smallest stiffness of pelvis was computed under a certain loading condition and analyzed with respect to sex and direction. The metric complements anthropometrical measures and provides a unique information about the smallest bone stiffness independent from the loading configuration and can be easily computed by state-of-the-art subject specified finite element algorithms.
format	article
author	Petr Henyš Michal Kuchař Petr Hájek Niels Hammer
author_facet	Petr Henyš Michal Kuchař Petr Hájek Niels Hammer
author_sort	Petr Henyš
title	Mechanical metric for skeletal biomechanics derived from spectral analysis of stiffness matrix
title_short	Mechanical metric for skeletal biomechanics derived from spectral analysis of stiffness matrix
title_full	Mechanical metric for skeletal biomechanics derived from spectral analysis of stiffness matrix
title_fullStr	Mechanical metric for skeletal biomechanics derived from spectral analysis of stiffness matrix
title_full_unstemmed	Mechanical metric for skeletal biomechanics derived from spectral analysis of stiffness matrix
title_sort	mechanical metric for skeletal biomechanics derived from spectral analysis of stiffness matrix
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/a65b99269c3744e69289eb0848483545
work_keys_str_mv	AT petrhenys mechanicalmetricforskeletalbiomechanicsderivedfromspectralanalysisofstiffnessmatrix AT michalkuchar mechanicalmetricforskeletalbiomechanicsderivedfromspectralanalysisofstiffnessmatrix AT petrhajek mechanicalmetricforskeletalbiomechanicsderivedfromspectralanalysisofstiffnessmatrix AT nielshammer mechanicalmetricforskeletalbiomechanicsderivedfromspectralanalysisofstiffnessmatrix
_version_	1718389465533120512

Mechanical metric for skeletal biomechanics derived from spectral analysis of stiffness matrix

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