Effect of removal and reinsertion of force-closed stems on deformation of total hip arthroplasty
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista Brasileira de Ortopedia (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-36162016000100029 |
Resumo: | ABSTRACT OBJECTIVES: This study investigated removal of a force-closed stem, done in order to improve acetabular exposure during revision, with reinsertion afterwards. It is unknown how much this procedure modifies the stem/cement interface. METHODS: Three tapered stem models were implanted into composite femurs. Strain gauges were embedded in the medial aspect of the cement mantle and in several positions on the outer surface of the femurs. The deformation was measured during static loading, which was applied at two different times: after implantation and after one million loading cycles, followed by stem removal and reinsertion. The t test was performed. The differences in deformation were compared (at p ≤ 0.05) between the two static loading times and among the three stem designs. RESULTS: No significant differences in deformation were found after the two loading times for the three models. No significant differences in the initial deformations of the three models were found for most of the gauges attached to the femurs. CONCLUSIONS: Reinsertion of the force-closed stem does not alter the load transmission from the stem to the cement and to the surface of the femur, even after one million loading cycles. |
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spelling |
Effect of removal and reinsertion of force-closed stems on deformation of total hip arthroplastyArthroplasty, hipProsthesis designMechanical phenomenaABSTRACT OBJECTIVES: This study investigated removal of a force-closed stem, done in order to improve acetabular exposure during revision, with reinsertion afterwards. It is unknown how much this procedure modifies the stem/cement interface. METHODS: Three tapered stem models were implanted into composite femurs. Strain gauges were embedded in the medial aspect of the cement mantle and in several positions on the outer surface of the femurs. The deformation was measured during static loading, which was applied at two different times: after implantation and after one million loading cycles, followed by stem removal and reinsertion. The t test was performed. The differences in deformation were compared (at p ≤ 0.05) between the two static loading times and among the three stem designs. RESULTS: No significant differences in deformation were found after the two loading times for the three models. No significant differences in the initial deformations of the three models were found for most of the gauges attached to the femurs. CONCLUSIONS: Reinsertion of the force-closed stem does not alter the load transmission from the stem to the cement and to the surface of the femur, even after one million loading cycles.Sociedade Brasileira de Ortopedia e Traumatologia2016-02-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-36162016000100029Revista Brasileira de Ortopedia v.51 n.1 2016reponame:Revista Brasileira de Ortopedia (Online)instname:Sociedade Brasileira de Ortopedia e Traumatologia (SBOT)instacron:SBOT10.1016/j.rboe.2015.03.016info:eu-repo/semantics/openAccessGriza,SandroGomes,Luiz Sérgio MarcelinoCervieri,AndréStrohaecker,Telmo Robertoeng2016-03-03T00:00:00Zoai:scielo:S0102-36162016000100029Revistahttp://www.rbo.org.br/https://old.scielo.br/oai/scielo-oai.php||rbo@sbot.org.br1982-43780102-3616opendoar:2016-03-03T00:00Revista Brasileira de Ortopedia (Online) - Sociedade Brasileira de Ortopedia e Traumatologia (SBOT)false |
dc.title.none.fl_str_mv |
Effect of removal and reinsertion of force-closed stems on deformation of total hip arthroplasty |
title |
Effect of removal and reinsertion of force-closed stems on deformation of total hip arthroplasty |
spellingShingle |
Effect of removal and reinsertion of force-closed stems on deformation of total hip arthroplasty Griza,Sandro Arthroplasty, hip Prosthesis design Mechanical phenomena |
title_short |
Effect of removal and reinsertion of force-closed stems on deformation of total hip arthroplasty |
title_full |
Effect of removal and reinsertion of force-closed stems on deformation of total hip arthroplasty |
title_fullStr |
Effect of removal and reinsertion of force-closed stems on deformation of total hip arthroplasty |
title_full_unstemmed |
Effect of removal and reinsertion of force-closed stems on deformation of total hip arthroplasty |
title_sort |
Effect of removal and reinsertion of force-closed stems on deformation of total hip arthroplasty |
author |
Griza,Sandro |
author_facet |
Griza,Sandro Gomes,Luiz Sérgio Marcelino Cervieri,André Strohaecker,Telmo Roberto |
author_role |
author |
author2 |
Gomes,Luiz Sérgio Marcelino Cervieri,André Strohaecker,Telmo Roberto |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Griza,Sandro Gomes,Luiz Sérgio Marcelino Cervieri,André Strohaecker,Telmo Roberto |
dc.subject.por.fl_str_mv |
Arthroplasty, hip Prosthesis design Mechanical phenomena |
topic |
Arthroplasty, hip Prosthesis design Mechanical phenomena |
description |
ABSTRACT OBJECTIVES: This study investigated removal of a force-closed stem, done in order to improve acetabular exposure during revision, with reinsertion afterwards. It is unknown how much this procedure modifies the stem/cement interface. METHODS: Three tapered stem models were implanted into composite femurs. Strain gauges were embedded in the medial aspect of the cement mantle and in several positions on the outer surface of the femurs. The deformation was measured during static loading, which was applied at two different times: after implantation and after one million loading cycles, followed by stem removal and reinsertion. The t test was performed. The differences in deformation were compared (at p ≤ 0.05) between the two static loading times and among the three stem designs. RESULTS: No significant differences in deformation were found after the two loading times for the three models. No significant differences in the initial deformations of the three models were found for most of the gauges attached to the femurs. CONCLUSIONS: Reinsertion of the force-closed stem does not alter the load transmission from the stem to the cement and to the surface of the femur, even after one million loading cycles. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-02-01 |
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=S0102-36162016000100029 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-36162016000100029 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1016/j.rboe.2015.03.016 |
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 |
Sociedade Brasileira de Ortopedia e Traumatologia |
publisher.none.fl_str_mv |
Sociedade Brasileira de Ortopedia e Traumatologia |
dc.source.none.fl_str_mv |
Revista Brasileira de Ortopedia v.51 n.1 2016 reponame:Revista Brasileira de Ortopedia (Online) instname:Sociedade Brasileira de Ortopedia e Traumatologia (SBOT) instacron:SBOT |
instname_str |
Sociedade Brasileira de Ortopedia e Traumatologia (SBOT) |
instacron_str |
SBOT |
institution |
SBOT |
reponame_str |
Revista Brasileira de Ortopedia (Online) |
collection |
Revista Brasileira de Ortopedia (Online) |
repository.name.fl_str_mv |
Revista Brasileira de Ortopedia (Online) - Sociedade Brasileira de Ortopedia e Traumatologia (SBOT) |
repository.mail.fl_str_mv |
||rbo@sbot.org.br |
_version_ |
1752122360062803968 |