Experimental determination of bone cortex holding power of orthopedic screw

Detalhes bibliográficos
Autor(a) principal: Bolliger Neto,Raul
Data de Publicação: 1999
Outros Autores: Rossi,João D. M. B. Alvarenga, Leivas,Tomaz Puga
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Revista do Hospital das Clínicas
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0041-87811999000600003
Resumo: Cylindrical specimens of bone measuring 15 mm in diameter were obtained from the lateral cortical layer of 10 pairs of femurs and tibias. A central hole 3.2 mm in diameter was drilled in each specimen. The hole was tapped, and a 4.5 mm cortical bone screw was inserted from the outer surface. The montage was submitted to push-out testing up to a complete strip of the bone threads. The cortical thickness and rupture load were measured, and the shear stress was calculated. The results were grouped according to the bone segment from which the specimen was obtained. The results showed that bone cortex screw holding power is dependent on the bone site. Additionally, the diaphyseal cortical bone tissue is both quantitatively and qualitatively more resistant to screw extraction than the metaphyseal tissue.
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spelling Experimental determination of bone cortex holding power of orthopedic screwBone and bonesBiomechanicsBone screwTension resistanceCylindrical specimens of bone measuring 15 mm in diameter were obtained from the lateral cortical layer of 10 pairs of femurs and tibias. A central hole 3.2 mm in diameter was drilled in each specimen. The hole was tapped, and a 4.5 mm cortical bone screw was inserted from the outer surface. The montage was submitted to push-out testing up to a complete strip of the bone threads. The cortical thickness and rupture load were measured, and the shear stress was calculated. The results were grouped according to the bone segment from which the specimen was obtained. The results showed that bone cortex screw holding power is dependent on the bone site. Additionally, the diaphyseal cortical bone tissue is both quantitatively and qualitatively more resistant to screw extraction than the metaphyseal tissue.Faculdade de Medicina / Universidade de São Paulo - FM/USP1999-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0041-87811999000600003Revista do Hospital das Clínicas v.54 n.6 1999reponame:Revista do Hospital das Clínicasinstname:Universidade de São Paulo (USP)instacron:USP10.1590/S0041-87811999000600003info:eu-repo/semantics/openAccessBolliger Neto,RaulRossi,João D. M. B. AlvarengaLeivas,Tomaz Pugaeng2000-07-20T00:00:00Zoai:scielo:S0041-87811999000600003Revistahttp://www.scielo.br/rhcPUBhttps://old.scielo.br/oai/scielo-oai.php||revista.hc@hcnet.usp.br1678-99030041-8781opendoar:2000-07-20T00:00Revista do Hospital das Clínicas - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv Experimental determination of bone cortex holding power of orthopedic screw
title Experimental determination of bone cortex holding power of orthopedic screw
spellingShingle Experimental determination of bone cortex holding power of orthopedic screw
Bolliger Neto,Raul
Bone and bones
Biomechanics
Bone screw
Tension resistance
title_short Experimental determination of bone cortex holding power of orthopedic screw
title_full Experimental determination of bone cortex holding power of orthopedic screw
title_fullStr Experimental determination of bone cortex holding power of orthopedic screw
title_full_unstemmed Experimental determination of bone cortex holding power of orthopedic screw
title_sort Experimental determination of bone cortex holding power of orthopedic screw
author Bolliger Neto,Raul
author_facet Bolliger Neto,Raul
Rossi,João D. M. B. Alvarenga
Leivas,Tomaz Puga
author_role author
author2 Rossi,João D. M. B. Alvarenga
Leivas,Tomaz Puga
author2_role author
author
dc.contributor.author.fl_str_mv Bolliger Neto,Raul
Rossi,João D. M. B. Alvarenga
Leivas,Tomaz Puga
dc.subject.por.fl_str_mv Bone and bones
Biomechanics
Bone screw
Tension resistance
topic Bone and bones
Biomechanics
Bone screw
Tension resistance
description Cylindrical specimens of bone measuring 15 mm in diameter were obtained from the lateral cortical layer of 10 pairs of femurs and tibias. A central hole 3.2 mm in diameter was drilled in each specimen. The hole was tapped, and a 4.5 mm cortical bone screw was inserted from the outer surface. The montage was submitted to push-out testing up to a complete strip of the bone threads. The cortical thickness and rupture load were measured, and the shear stress was calculated. The results were grouped according to the bone segment from which the specimen was obtained. The results showed that bone cortex screw holding power is dependent on the bone site. Additionally, the diaphyseal cortical bone tissue is both quantitatively and qualitatively more resistant to screw extraction than the metaphyseal tissue.
publishDate 1999
dc.date.none.fl_str_mv 1999-12-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0041-87811999000600003
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0041-87811999000600003
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0041-87811999000600003
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Faculdade de Medicina / Universidade de São Paulo - FM/USP
publisher.none.fl_str_mv Faculdade de Medicina / Universidade de São Paulo - FM/USP
dc.source.none.fl_str_mv Revista do Hospital das Clínicas v.54 n.6 1999
reponame:Revista do Hospital das Clínicas
instname:Universidade de São Paulo (USP)
instacron:USP
instname_str Universidade de São Paulo (USP)
instacron_str USP
institution USP
reponame_str Revista do Hospital das Clínicas
collection Revista do Hospital das Clínicas
repository.name.fl_str_mv Revista do Hospital das Clínicas - Universidade de São Paulo (USP)
repository.mail.fl_str_mv ||revista.hc@hcnet.usp.br
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