Is it Important to Know Where to Place the Spherical Marker for Hip Replacement Digital Planning?

Detalhes bibliográficos
Autor(a) principal: Polesello,Giancarlo Cavalli
Data de Publicação: 2020
Outros Autores: Salerno,Thiago Tronco, Rezende,João Hélio Zucarelli, Ricioli Junior,Walter, Rabelo,Nayra Deise, Queiroz,Marcelo Cavalheiro de
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=S0102-36162020000300353
Resumo: Abstract Objective The present paper aims to evaluate the influences of individual characteristics in radiographic magnification and to identify the most accurate method for radiographic calibration. Methods During radiographical exam of 50 patients with hip prosthesis, anthropometric data was collected and 4 spherical metal markers with 25 mm diameters were positioned: at the greater trochanter level and lateral to it, over the pubic symphysis, between the thighs at the greater trochanter level, and over the exam table. Since the prosthesis head is the best internal radiographic marker for hip arthroplasty, it was our calibration parameter. Two examiners measured the markers' image for further analysis. Results The sample consisted of 50 participants, 19 of whom were male. A difference in pubic symphysis magnification was found. Other individual characteristics (weight, height and body mass index) had weak correlation. The higher accuracy of the markers was at the greater trochanter, between 68.4 and 78.9%, visualized in only19 radiographs. The marker positioned between the thighs was visualized in all radiographs, with an accuracy ranging from 30 to 46%. Conclusions Of all individual characteristics, only gender influences magnification at the pubic symphysis. We suggest the use of two spherical markers: at the greater trochanter, due the best accuracy, and between the thighs, considered the best positioning for better visibility.
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spelling Is it Important to Know Where to Place the Spherical Marker for Hip Replacement Digital Planning?arthroplasty, replacement, hiphip prosthesisradiographypelvisradiographic magnificationAbstract Objective The present paper aims to evaluate the influences of individual characteristics in radiographic magnification and to identify the most accurate method for radiographic calibration. Methods During radiographical exam of 50 patients with hip prosthesis, anthropometric data was collected and 4 spherical metal markers with 25 mm diameters were positioned: at the greater trochanter level and lateral to it, over the pubic symphysis, between the thighs at the greater trochanter level, and over the exam table. Since the prosthesis head is the best internal radiographic marker for hip arthroplasty, it was our calibration parameter. Two examiners measured the markers' image for further analysis. Results The sample consisted of 50 participants, 19 of whom were male. A difference in pubic symphysis magnification was found. Other individual characteristics (weight, height and body mass index) had weak correlation. The higher accuracy of the markers was at the greater trochanter, between 68.4 and 78.9%, visualized in only19 radiographs. The marker positioned between the thighs was visualized in all radiographs, with an accuracy ranging from 30 to 46%. Conclusions Of all individual characteristics, only gender influences magnification at the pubic symphysis. We suggest the use of two spherical markers: at the greater trochanter, due the best accuracy, and between the thighs, considered the best positioning for better visibility.Sociedade Brasileira de Ortopedia e Traumatologia2020-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-36162020000300353Revista Brasileira de Ortopedia v.55 n.3 2020reponame:Revista Brasileira de Ortopedia (Online)instname:Sociedade Brasileira de Ortopedia e Traumatologia (SBOT)instacron:SBOT10.1055/s-0039-1693052info:eu-repo/semantics/openAccessPolesello,Giancarlo CavalliSalerno,Thiago TroncoRezende,João Hélio ZucarelliRicioli Junior,WalterRabelo,Nayra DeiseQueiroz,Marcelo Cavalheiro deeng2020-09-28T00:00:00Zoai:scielo:S0102-36162020000300353Revistahttp://www.rbo.org.br/https://old.scielo.br/oai/scielo-oai.php||rbo@sbot.org.br1982-43780102-3616opendoar:2020-09-28T00:00Revista Brasileira de Ortopedia (Online) - Sociedade Brasileira de Ortopedia e Traumatologia (SBOT)false
dc.title.none.fl_str_mv Is it Important to Know Where to Place the Spherical Marker for Hip Replacement Digital Planning?
title Is it Important to Know Where to Place the Spherical Marker for Hip Replacement Digital Planning?
spellingShingle Is it Important to Know Where to Place the Spherical Marker for Hip Replacement Digital Planning?
Polesello,Giancarlo Cavalli
arthroplasty, replacement, hip
hip prosthesis
radiography
pelvis
radiographic magnification
title_short Is it Important to Know Where to Place the Spherical Marker for Hip Replacement Digital Planning?
title_full Is it Important to Know Where to Place the Spherical Marker for Hip Replacement Digital Planning?
title_fullStr Is it Important to Know Where to Place the Spherical Marker for Hip Replacement Digital Planning?
title_full_unstemmed Is it Important to Know Where to Place the Spherical Marker for Hip Replacement Digital Planning?
title_sort Is it Important to Know Where to Place the Spherical Marker for Hip Replacement Digital Planning?
author Polesello,Giancarlo Cavalli
author_facet Polesello,Giancarlo Cavalli
Salerno,Thiago Tronco
Rezende,João Hélio Zucarelli
Ricioli Junior,Walter
Rabelo,Nayra Deise
Queiroz,Marcelo Cavalheiro de
author_role author
author2 Salerno,Thiago Tronco
Rezende,João Hélio Zucarelli
Ricioli Junior,Walter
Rabelo,Nayra Deise
Queiroz,Marcelo Cavalheiro de
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Polesello,Giancarlo Cavalli
Salerno,Thiago Tronco
Rezende,João Hélio Zucarelli
Ricioli Junior,Walter
Rabelo,Nayra Deise
Queiroz,Marcelo Cavalheiro de
dc.subject.por.fl_str_mv arthroplasty, replacement, hip
hip prosthesis
radiography
pelvis
radiographic magnification
topic arthroplasty, replacement, hip
hip prosthesis
radiography
pelvis
radiographic magnification
description Abstract Objective The present paper aims to evaluate the influences of individual characteristics in radiographic magnification and to identify the most accurate method for radiographic calibration. Methods During radiographical exam of 50 patients with hip prosthesis, anthropometric data was collected and 4 spherical metal markers with 25 mm diameters were positioned: at the greater trochanter level and lateral to it, over the pubic symphysis, between the thighs at the greater trochanter level, and over the exam table. Since the prosthesis head is the best internal radiographic marker for hip arthroplasty, it was our calibration parameter. Two examiners measured the markers' image for further analysis. Results The sample consisted of 50 participants, 19 of whom were male. A difference in pubic symphysis magnification was found. Other individual characteristics (weight, height and body mass index) had weak correlation. The higher accuracy of the markers was at the greater trochanter, between 68.4 and 78.9%, visualized in only19 radiographs. The marker positioned between the thighs was visualized in all radiographs, with an accuracy ranging from 30 to 46%. Conclusions Of all individual characteristics, only gender influences magnification at the pubic symphysis. We suggest the use of two spherical markers: at the greater trochanter, due the best accuracy, and between the thighs, considered the best positioning for better visibility.
publishDate 2020
dc.date.none.fl_str_mv 2020-06-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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dc.language.iso.fl_str_mv eng
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dc.relation.none.fl_str_mv 10.1055/s-0039-1693052
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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.55 n.3 2020
reponame:Revista Brasileira de Ortopedia (Online)
instname:Sociedade Brasileira de Ortopedia e Traumatologia (SBOT)
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