Soft tissue artefacts of the human back: comparison of the sagittal curvature of the spine measured using skin markers and an open upright MRI.

Soft tissue artefact affects the determination of skeletal kinematics. Thus, it is important to know the accuracy and limitations of kinematic parameters determined and modelled based on skin marker data. Here, the curvature angles, as well as the rotations of the lumbar and thoracic segments, of se...

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Autores principales: Roland Zemp, Renate List, Turgut Gülay, Jean Pierre Elsig, Jaroslav Naxera, William R Taylor, Silvio Lorenzetti
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Publicado: Public Library of Science (PLoS) 2014
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Acceso en línea:https://doaj.org/article/502e3c01de274dabba47c525e38897a7
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spelling oai:doaj.org-article:502e3c01de274dabba47c525e38897a72021-11-18T08:22:27ZSoft tissue artefacts of the human back: comparison of the sagittal curvature of the spine measured using skin markers and an open upright MRI.1932-620310.1371/journal.pone.0095426https://doaj.org/article/502e3c01de274dabba47c525e38897a72014-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24748013/?tool=EBIhttps://doaj.org/toc/1932-6203Soft tissue artefact affects the determination of skeletal kinematics. Thus, it is important to know the accuracy and limitations of kinematic parameters determined and modelled based on skin marker data. Here, the curvature angles, as well as the rotations of the lumbar and thoracic segments, of seven healthy subjects were determined in the sagittal plane using a skin marker set and compared to measurements taken in an open upright MRI scanner in order to understand the influence of soft tissue artefact at the back. The mean STA in the flexed compared to the extended positions were 10.2±6.1 mm (lumbar)/9.3±4.2 mm (thoracic) and 10.7±4.8 mm (lumbar)/9.2±4.9 mm (thoracic) respectively. A linear regression of the lumbar and thoracic curvatures between the marker-based measurements and MRI-based measurements resulted in coefficients of determination, R2, of 0.552 and 0.385 respectively. Skin marker measurements therefore allow for the assessment of changes in the lumbar and thoracic curvature angles, but the absolute values suffer from uncertainty. Nevertheless, this marker set appears to be suitable for quantifying lumbar and thoracic spinal changes between quasi-static whole body postural changes.Roland ZempRenate ListTurgut GülayJean Pierre ElsigJaroslav NaxeraWilliam R TaylorSilvio LorenzettiPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 9, Iss 4, p e95426 (2014)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Roland Zemp
Renate List
Turgut Gülay
Jean Pierre Elsig
Jaroslav Naxera
William R Taylor
Silvio Lorenzetti
Soft tissue artefacts of the human back: comparison of the sagittal curvature of the spine measured using skin markers and an open upright MRI.
description Soft tissue artefact affects the determination of skeletal kinematics. Thus, it is important to know the accuracy and limitations of kinematic parameters determined and modelled based on skin marker data. Here, the curvature angles, as well as the rotations of the lumbar and thoracic segments, of seven healthy subjects were determined in the sagittal plane using a skin marker set and compared to measurements taken in an open upright MRI scanner in order to understand the influence of soft tissue artefact at the back. The mean STA in the flexed compared to the extended positions were 10.2±6.1 mm (lumbar)/9.3±4.2 mm (thoracic) and 10.7±4.8 mm (lumbar)/9.2±4.9 mm (thoracic) respectively. A linear regression of the lumbar and thoracic curvatures between the marker-based measurements and MRI-based measurements resulted in coefficients of determination, R2, of 0.552 and 0.385 respectively. Skin marker measurements therefore allow for the assessment of changes in the lumbar and thoracic curvature angles, but the absolute values suffer from uncertainty. Nevertheless, this marker set appears to be suitable for quantifying lumbar and thoracic spinal changes between quasi-static whole body postural changes.
format article
author Roland Zemp
Renate List
Turgut Gülay
Jean Pierre Elsig
Jaroslav Naxera
William R Taylor
Silvio Lorenzetti
author_facet Roland Zemp
Renate List
Turgut Gülay
Jean Pierre Elsig
Jaroslav Naxera
William R Taylor
Silvio Lorenzetti
author_sort Roland Zemp
title Soft tissue artefacts of the human back: comparison of the sagittal curvature of the spine measured using skin markers and an open upright MRI.
title_short Soft tissue artefacts of the human back: comparison of the sagittal curvature of the spine measured using skin markers and an open upright MRI.
title_full Soft tissue artefacts of the human back: comparison of the sagittal curvature of the spine measured using skin markers and an open upright MRI.
title_fullStr Soft tissue artefacts of the human back: comparison of the sagittal curvature of the spine measured using skin markers and an open upright MRI.
title_full_unstemmed Soft tissue artefacts of the human back: comparison of the sagittal curvature of the spine measured using skin markers and an open upright MRI.
title_sort soft tissue artefacts of the human back: comparison of the sagittal curvature of the spine measured using skin markers and an open upright mri.
publisher Public Library of Science (PLoS)
publishDate 2014
url https://doaj.org/article/502e3c01de274dabba47c525e38897a7
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