The Effect of External Fixator Configurations on the Dynamic Compression Load: An Experimental and Numerical Study
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10316/105774 https://doi.org/10.3390/app10010003 |
Resumo: | (1) Objective: External fixation systems are commonly used by surgeons to ensure stabilization and consolidation of bone fractures, especially in patients who are at high risk for systematic complications. Both rigid and elastic external fixations are important in the fracture healing process. This study aims to evaluate the behavior of the Orthofix Limb Reconstruction System (LRS)® in the dynamic compression mode. (2) Methods: Experimental and numerical setups were developed using a simplified model of a human tibia which consisted of a nylon bar with a diameter of 30 mm. The bone callus was included in both setups by means of a load cell-based system, which consisted of two carbon epoxy laminated composite plates with a final sti ness of 220 N/mm. The system was evaluated experimentally and numerically, considering di erent numbers of pins and comparing distances between the external fixator frame and the bone, achieving a good correlation between experimental and numerical results. (3) Results: The results identified and quantified the percental load transferred to the fracture and its sensibility to the distance between the external fixator and bone. Additionally, LRS locking sti ness was evaluated which resulted from the clamp-rail clearances. The results show that the blocking e ects of the free clamp movement are directly related to the fixator configuration and are responsible for changes in the amount of load that crosses the bone callus. (4) Conclusions: From the biomechanical point of view, the results suggest that the average bending span of Schanz pins and the weights of the patients should be included into clinical studies of external fixators comparisons purpose. |
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The Effect of External Fixator Configurations on the Dynamic Compression Load: An Experimental and Numerical StudyboneOrthofix Limb Reconstruction System (LRS) external fixatorbone load transferfinite element analysis(1) Objective: External fixation systems are commonly used by surgeons to ensure stabilization and consolidation of bone fractures, especially in patients who are at high risk for systematic complications. Both rigid and elastic external fixations are important in the fracture healing process. This study aims to evaluate the behavior of the Orthofix Limb Reconstruction System (LRS)® in the dynamic compression mode. (2) Methods: Experimental and numerical setups were developed using a simplified model of a human tibia which consisted of a nylon bar with a diameter of 30 mm. The bone callus was included in both setups by means of a load cell-based system, which consisted of two carbon epoxy laminated composite plates with a final sti ness of 220 N/mm. The system was evaluated experimentally and numerically, considering di erent numbers of pins and comparing distances between the external fixator frame and the bone, achieving a good correlation between experimental and numerical results. (3) Results: The results identified and quantified the percental load transferred to the fracture and its sensibility to the distance between the external fixator and bone. Additionally, LRS locking sti ness was evaluated which resulted from the clamp-rail clearances. The results show that the blocking e ects of the free clamp movement are directly related to the fixator configuration and are responsible for changes in the amount of load that crosses the bone callus. (4) Conclusions: From the biomechanical point of view, the results suggest that the average bending span of Schanz pins and the weights of the patients should be included into clinical studies of external fixators comparisons purpose.MDPI2019info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10316/105774http://hdl.handle.net/10316/105774https://doi.org/10.3390/app10010003eng2076-3417Amaro, Ana MartinsPaulino, Maria FátimaRoseiro, Luís ManuelNeto, Maria Augustainfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-03-07T21:34:42Zoai:estudogeral.uc.pt:10316/105774Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T21:22:16.877319Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
The Effect of External Fixator Configurations on the Dynamic Compression Load: An Experimental and Numerical Study |
title |
The Effect of External Fixator Configurations on the Dynamic Compression Load: An Experimental and Numerical Study |
spellingShingle |
The Effect of External Fixator Configurations on the Dynamic Compression Load: An Experimental and Numerical Study Amaro, Ana Martins bone Orthofix Limb Reconstruction System (LRS) external fixator bone load transfer finite element analysis |
title_short |
The Effect of External Fixator Configurations on the Dynamic Compression Load: An Experimental and Numerical Study |
title_full |
The Effect of External Fixator Configurations on the Dynamic Compression Load: An Experimental and Numerical Study |
title_fullStr |
The Effect of External Fixator Configurations on the Dynamic Compression Load: An Experimental and Numerical Study |
title_full_unstemmed |
The Effect of External Fixator Configurations on the Dynamic Compression Load: An Experimental and Numerical Study |
title_sort |
The Effect of External Fixator Configurations on the Dynamic Compression Load: An Experimental and Numerical Study |
author |
Amaro, Ana Martins |
author_facet |
Amaro, Ana Martins Paulino, Maria Fátima Roseiro, Luís Manuel Neto, Maria Augusta |
author_role |
author |
author2 |
Paulino, Maria Fátima Roseiro, Luís Manuel Neto, Maria Augusta |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Amaro, Ana Martins Paulino, Maria Fátima Roseiro, Luís Manuel Neto, Maria Augusta |
dc.subject.por.fl_str_mv |
bone Orthofix Limb Reconstruction System (LRS) external fixator bone load transfer finite element analysis |
topic |
bone Orthofix Limb Reconstruction System (LRS) external fixator bone load transfer finite element analysis |
description |
(1) Objective: External fixation systems are commonly used by surgeons to ensure stabilization and consolidation of bone fractures, especially in patients who are at high risk for systematic complications. Both rigid and elastic external fixations are important in the fracture healing process. This study aims to evaluate the behavior of the Orthofix Limb Reconstruction System (LRS)® in the dynamic compression mode. (2) Methods: Experimental and numerical setups were developed using a simplified model of a human tibia which consisted of a nylon bar with a diameter of 30 mm. The bone callus was included in both setups by means of a load cell-based system, which consisted of two carbon epoxy laminated composite plates with a final sti ness of 220 N/mm. The system was evaluated experimentally and numerically, considering di erent numbers of pins and comparing distances between the external fixator frame and the bone, achieving a good correlation between experimental and numerical results. (3) Results: The results identified and quantified the percental load transferred to the fracture and its sensibility to the distance between the external fixator and bone. Additionally, LRS locking sti ness was evaluated which resulted from the clamp-rail clearances. The results show that the blocking e ects of the free clamp movement are directly related to the fixator configuration and are responsible for changes in the amount of load that crosses the bone callus. (4) Conclusions: From the biomechanical point of view, the results suggest that the average bending span of Schanz pins and the weights of the patients should be included into clinical studies of external fixators comparisons purpose. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10316/105774 http://hdl.handle.net/10316/105774 https://doi.org/10.3390/app10010003 |
url |
http://hdl.handle.net/10316/105774 https://doi.org/10.3390/app10010003 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
2076-3417 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
MDPI |
publisher.none.fl_str_mv |
MDPI |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799134112305381376 |