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A novel sideways fall simulator to study hip fractures ex vivo
Falls to the side are the leading cause of hip fractures in the elderly. The load that a person experiences during a fall cannot be measured with volunteers for ethical reasons. To evaluate injurious loads, while considering relevant energy input and body posture for a sideways fall, a subject-speci...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6057661/ https://www.ncbi.nlm.nih.gov/pubmed/30040858 http://dx.doi.org/10.1371/journal.pone.0201096 |
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author | Fleps, Ingmar Vuille, Muriel Melnyk, Angela Ferguson, Stephen J. Guy, Pierre Helgason, Benedikt Cripton, Peter A. |
author_facet | Fleps, Ingmar Vuille, Muriel Melnyk, Angela Ferguson, Stephen J. Guy, Pierre Helgason, Benedikt Cripton, Peter A. |
author_sort | Fleps, Ingmar |
collection | PubMed |
description | Falls to the side are the leading cause of hip fractures in the elderly. The load that a person experiences during a fall cannot be measured with volunteers for ethical reasons. To evaluate injurious loads, while considering relevant energy input and body posture for a sideways fall, a subject-specific cadaveric impact experiment was developed. Full cadaveric femur-pelvis constructs (N = 2) were embedded in surrogate soft tissue material and attached to metallic surrogate lower limbs. The specimens were then subjected to an inverted pendulum motion, simulating a fall to the side with an impact to the greater trochanter. The load at the ground and the deformation of the pelvis were evaluated using a 6-axis force transducer and two high-speed cameras. Post-test, a trauma surgeon (PG) evaluated specimen injuries. Peak ground contact forces were 7132 N and 5641 N for the fractured and non-fractured specimen, respectively. We observed a cervical fracture of the femur in one specimen and no injuries in a second specimen, showing that the developed protocol can be used to differentiate between specimens at high and low fracture risk. |
format | Online Article Text |
id | pubmed-6057661 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-60576612018-08-06 A novel sideways fall simulator to study hip fractures ex vivo Fleps, Ingmar Vuille, Muriel Melnyk, Angela Ferguson, Stephen J. Guy, Pierre Helgason, Benedikt Cripton, Peter A. PLoS One Research Article Falls to the side are the leading cause of hip fractures in the elderly. The load that a person experiences during a fall cannot be measured with volunteers for ethical reasons. To evaluate injurious loads, while considering relevant energy input and body posture for a sideways fall, a subject-specific cadaveric impact experiment was developed. Full cadaveric femur-pelvis constructs (N = 2) were embedded in surrogate soft tissue material and attached to metallic surrogate lower limbs. The specimens were then subjected to an inverted pendulum motion, simulating a fall to the side with an impact to the greater trochanter. The load at the ground and the deformation of the pelvis were evaluated using a 6-axis force transducer and two high-speed cameras. Post-test, a trauma surgeon (PG) evaluated specimen injuries. Peak ground contact forces were 7132 N and 5641 N for the fractured and non-fractured specimen, respectively. We observed a cervical fracture of the femur in one specimen and no injuries in a second specimen, showing that the developed protocol can be used to differentiate between specimens at high and low fracture risk. Public Library of Science 2018-07-24 /pmc/articles/PMC6057661/ /pubmed/30040858 http://dx.doi.org/10.1371/journal.pone.0201096 Text en © 2018 Fleps et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
spellingShingle | Research Article Fleps, Ingmar Vuille, Muriel Melnyk, Angela Ferguson, Stephen J. Guy, Pierre Helgason, Benedikt Cripton, Peter A. A novel sideways fall simulator to study hip fractures ex vivo |
title | A novel sideways fall simulator to study hip fractures ex vivo |
title_full | A novel sideways fall simulator to study hip fractures ex vivo |
title_fullStr | A novel sideways fall simulator to study hip fractures ex vivo |
title_full_unstemmed | A novel sideways fall simulator to study hip fractures ex vivo |
title_short | A novel sideways fall simulator to study hip fractures ex vivo |
title_sort | novel sideways fall simulator to study hip fractures ex vivo |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6057661/ https://www.ncbi.nlm.nih.gov/pubmed/30040858 http://dx.doi.org/10.1371/journal.pone.0201096 |
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