Importance of the different posterolateral knee static stabilizers: biomechanical study
Autor(a) principal: | |
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Data de Publicação: | 2010 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Clinics |
Texto Completo: | https://www.revistas.usp.br/clinics/article/view/18446 |
Resumo: | PURPOSE: The purpose of this study was to evaluate the relative importance of the different static stabilizers of the posterolateral corner of the knee in cadavers. METHODS: Tests were performed with the application of a varus and external rotation force to the knee in extension at 30 and 60 degrees of flexion using 10 cadaver knees. The forces were applied initially to an intact knee and then repeated after a selective sectioning of the ligaments into the following: section of the lateral collateral ligament; section of the lateral collateral ligament and the popliteofibular complex; and section of the lateral collateral ligament, the popliteofibular complex and the posterolateral capsule. The parameters studied were the angular deformity and stiffness when the knees were submitted to a 15 Newton-meter varus torque and a 6 Newton-meter external tibial torque. Statistical analysis was performed using the ANOVA (Analysis of Variance) and Tukey's tests. RESULTS AND CONCLUSION: Our findings showed that the lateral collateral ligament was important in varus stability at 0, 30 and 60 degrees. The popliteofibular complex was the most important structure for external rotation stability at all angles of flexion and was also important for varus stability at 30 and 60 degrees. The posterolateral capsule was important for varus stability at 0 and 30 degrees and for external rotation stability in extension. Level of evidence: Level IV (cadaver study). |
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Importance of the different posterolateral knee static stabilizers: biomechanical study KneeLigamentsJoint instabilityBiomechanicsCadaver PURPOSE: The purpose of this study was to evaluate the relative importance of the different static stabilizers of the posterolateral corner of the knee in cadavers. METHODS: Tests were performed with the application of a varus and external rotation force to the knee in extension at 30 and 60 degrees of flexion using 10 cadaver knees. The forces were applied initially to an intact knee and then repeated after a selective sectioning of the ligaments into the following: section of the lateral collateral ligament; section of the lateral collateral ligament and the popliteofibular complex; and section of the lateral collateral ligament, the popliteofibular complex and the posterolateral capsule. The parameters studied were the angular deformity and stiffness when the knees were submitted to a 15 Newton-meter varus torque and a 6 Newton-meter external tibial torque. Statistical analysis was performed using the ANOVA (Analysis of Variance) and Tukey's tests. RESULTS AND CONCLUSION: Our findings showed that the lateral collateral ligament was important in varus stability at 0, 30 and 60 degrees. The popliteofibular complex was the most important structure for external rotation stability at all angles of flexion and was also important for varus stability at 30 and 60 degrees. The posterolateral capsule was important for varus stability at 0 and 30 degrees and for external rotation stability in extension. Level of evidence: Level IV (cadaver study). Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo2010-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://www.revistas.usp.br/clinics/article/view/1844610.1590/S1807-59322010000400013Clinics; Vol. 65 No. 4 (2010); 433-440 Clinics; v. 65 n. 4 (2010); 433-440 Clinics; Vol. 65 Núm. 4 (2010); 433-440 1980-53221807-5932reponame:Clinicsinstname:Universidade de São Paulo (USP)instacron:USPenghttps://www.revistas.usp.br/clinics/article/view/18446/20509Lasmar, Rodrigo Campos PaceAlmeida, Adriano Marques deSerbino Jr., José WilsonAlbuquerque, Roberto Freire da MotaHernandez, Arnaldo Joséinfo:eu-repo/semantics/openAccess2012-05-23T11:24:29Zoai:revistas.usp.br:article/18446Revistahttps://www.revistas.usp.br/clinicsPUBhttps://www.revistas.usp.br/clinics/oai||clinics@hc.fm.usp.br1980-53221807-5932opendoar:2012-05-23T11:24:29Clinics - Universidade de São Paulo (USP)false |
dc.title.none.fl_str_mv |
Importance of the different posterolateral knee static stabilizers: biomechanical study |
title |
Importance of the different posterolateral knee static stabilizers: biomechanical study |
spellingShingle |
Importance of the different posterolateral knee static stabilizers: biomechanical study Lasmar, Rodrigo Campos Pace Knee Ligaments Joint instability Biomechanics Cadaver |
title_short |
Importance of the different posterolateral knee static stabilizers: biomechanical study |
title_full |
Importance of the different posterolateral knee static stabilizers: biomechanical study |
title_fullStr |
Importance of the different posterolateral knee static stabilizers: biomechanical study |
title_full_unstemmed |
Importance of the different posterolateral knee static stabilizers: biomechanical study |
title_sort |
Importance of the different posterolateral knee static stabilizers: biomechanical study |
author |
Lasmar, Rodrigo Campos Pace |
author_facet |
Lasmar, Rodrigo Campos Pace Almeida, Adriano Marques de Serbino Jr., José Wilson Albuquerque, Roberto Freire da Mota Hernandez, Arnaldo José |
author_role |
author |
author2 |
Almeida, Adriano Marques de Serbino Jr., José Wilson Albuquerque, Roberto Freire da Mota Hernandez, Arnaldo José |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Lasmar, Rodrigo Campos Pace Almeida, Adriano Marques de Serbino Jr., José Wilson Albuquerque, Roberto Freire da Mota Hernandez, Arnaldo José |
dc.subject.por.fl_str_mv |
Knee Ligaments Joint instability Biomechanics Cadaver |
topic |
Knee Ligaments Joint instability Biomechanics Cadaver |
description |
PURPOSE: The purpose of this study was to evaluate the relative importance of the different static stabilizers of the posterolateral corner of the knee in cadavers. METHODS: Tests were performed with the application of a varus and external rotation force to the knee in extension at 30 and 60 degrees of flexion using 10 cadaver knees. The forces were applied initially to an intact knee and then repeated after a selective sectioning of the ligaments into the following: section of the lateral collateral ligament; section of the lateral collateral ligament and the popliteofibular complex; and section of the lateral collateral ligament, the popliteofibular complex and the posterolateral capsule. The parameters studied were the angular deformity and stiffness when the knees were submitted to a 15 Newton-meter varus torque and a 6 Newton-meter external tibial torque. Statistical analysis was performed using the ANOVA (Analysis of Variance) and Tukey's tests. RESULTS AND CONCLUSION: Our findings showed that the lateral collateral ligament was important in varus stability at 0, 30 and 60 degrees. The popliteofibular complex was the most important structure for external rotation stability at all angles of flexion and was also important for varus stability at 30 and 60 degrees. The posterolateral capsule was important for varus stability at 0 and 30 degrees and for external rotation stability in extension. Level of evidence: Level IV (cadaver study). |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://www.revistas.usp.br/clinics/article/view/18446 10.1590/S1807-59322010000400013 |
url |
https://www.revistas.usp.br/clinics/article/view/18446 |
identifier_str_mv |
10.1590/S1807-59322010000400013 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://www.revistas.usp.br/clinics/article/view/18446/20509 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo |
publisher.none.fl_str_mv |
Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo |
dc.source.none.fl_str_mv |
Clinics; Vol. 65 No. 4 (2010); 433-440 Clinics; v. 65 n. 4 (2010); 433-440 Clinics; Vol. 65 Núm. 4 (2010); 433-440 1980-5322 1807-5932 reponame:Clinics instname:Universidade de São Paulo (USP) instacron:USP |
instname_str |
Universidade de São Paulo (USP) |
instacron_str |
USP |
institution |
USP |
reponame_str |
Clinics |
collection |
Clinics |
repository.name.fl_str_mv |
Clinics - Universidade de São Paulo (USP) |
repository.mail.fl_str_mv |
||clinics@hc.fm.usp.br |
_version_ |
1800222755338059776 |