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Biomechanical Analysis of Reducing Sacroiliac Joint Shear Load by Optimization of Pelvic Muscle and Ligament Forces

Effective stabilization of the sacroiliac joints (SIJ) is essential, since spinal loading is transferred via the SIJ to the coxal bones, and further to the legs. We performed a biomechanical analysis of SIJ stability in terms of reduced SIJ shear force in standing posture using a validated static 3-...

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Autores principales: Pel, J. J. M., Spoor, C. W., Pool-Goudzwaard, A. L., Hoek van Dijke, G. A., Snijders, C. J.
Formato: Texto
Lenguaje:English
Publicado: Springer US 2008
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2239251/
https://www.ncbi.nlm.nih.gov/pubmed/18204902
http://dx.doi.org/10.1007/s10439-007-9385-8
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author Pel, J. J. M.
Spoor, C. W.
Pool-Goudzwaard, A. L.
Hoek van Dijke, G. A.
Snijders, C. J.
author_facet Pel, J. J. M.
Spoor, C. W.
Pool-Goudzwaard, A. L.
Hoek van Dijke, G. A.
Snijders, C. J.
author_sort Pel, J. J. M.
collection PubMed
description Effective stabilization of the sacroiliac joints (SIJ) is essential, since spinal loading is transferred via the SIJ to the coxal bones, and further to the legs. We performed a biomechanical analysis of SIJ stability in terms of reduced SIJ shear force in standing posture using a validated static 3-D simulation model. This model contained 100 muscle elements, 8 ligaments, and 8 joints in trunk, pelvis, and upper legs. Initially, the model was set up to minimize the maximum muscle stress. In this situation, the trunk load was mainly balanced between the coxal bones by vertical SIJ shear force. An imposed reduction of the vertical SIJ shear by 20% resulted in 70% increase of SIJ compression force due to activation of hip flexors and counteracting hip extensors. Another 20% reduction of the vertical SIJ shear force resulted in further increase of SIJ compression force by 400%, due to activation of the transversely oriented M. transversus abdominis and pelvic floor muscles. The M. transversus abdominis crosses the SIJ and clamps the sacrum between the coxal bones. Moreover, the pelvic floor muscles oppose lateral movement of the coxal bones, which stabilizes the position of the sacrum between the coxal bones (the pelvic arc). Our results suggest that training of the M. transversus abdominis and the pelvic floor muscles could help to relieve SI-joint related pelvic pain.
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spelling pubmed-22392512008-02-12 Biomechanical Analysis of Reducing Sacroiliac Joint Shear Load by Optimization of Pelvic Muscle and Ligament Forces Pel, J. J. M. Spoor, C. W. Pool-Goudzwaard, A. L. Hoek van Dijke, G. A. Snijders, C. J. Ann Biomed Eng Article Effective stabilization of the sacroiliac joints (SIJ) is essential, since spinal loading is transferred via the SIJ to the coxal bones, and further to the legs. We performed a biomechanical analysis of SIJ stability in terms of reduced SIJ shear force in standing posture using a validated static 3-D simulation model. This model contained 100 muscle elements, 8 ligaments, and 8 joints in trunk, pelvis, and upper legs. Initially, the model was set up to minimize the maximum muscle stress. In this situation, the trunk load was mainly balanced between the coxal bones by vertical SIJ shear force. An imposed reduction of the vertical SIJ shear by 20% resulted in 70% increase of SIJ compression force due to activation of hip flexors and counteracting hip extensors. Another 20% reduction of the vertical SIJ shear force resulted in further increase of SIJ compression force by 400%, due to activation of the transversely oriented M. transversus abdominis and pelvic floor muscles. The M. transversus abdominis crosses the SIJ and clamps the sacrum between the coxal bones. Moreover, the pelvic floor muscles oppose lateral movement of the coxal bones, which stabilizes the position of the sacrum between the coxal bones (the pelvic arc). Our results suggest that training of the M. transversus abdominis and the pelvic floor muscles could help to relieve SI-joint related pelvic pain. Springer US 2008-01-18 2008-03 /pmc/articles/PMC2239251/ /pubmed/18204902 http://dx.doi.org/10.1007/s10439-007-9385-8 Text en © The Author(s) 2008
spellingShingle Article
Pel, J. J. M.
Spoor, C. W.
Pool-Goudzwaard, A. L.
Hoek van Dijke, G. A.
Snijders, C. J.
Biomechanical Analysis of Reducing Sacroiliac Joint Shear Load by Optimization of Pelvic Muscle and Ligament Forces
title Biomechanical Analysis of Reducing Sacroiliac Joint Shear Load by Optimization of Pelvic Muscle and Ligament Forces
title_full Biomechanical Analysis of Reducing Sacroiliac Joint Shear Load by Optimization of Pelvic Muscle and Ligament Forces
title_fullStr Biomechanical Analysis of Reducing Sacroiliac Joint Shear Load by Optimization of Pelvic Muscle and Ligament Forces
title_full_unstemmed Biomechanical Analysis of Reducing Sacroiliac Joint Shear Load by Optimization of Pelvic Muscle and Ligament Forces
title_short Biomechanical Analysis of Reducing Sacroiliac Joint Shear Load by Optimization of Pelvic Muscle and Ligament Forces
title_sort biomechanical analysis of reducing sacroiliac joint shear load by optimization of pelvic muscle and ligament forces
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2239251/
https://www.ncbi.nlm.nih.gov/pubmed/18204902
http://dx.doi.org/10.1007/s10439-007-9385-8
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