Is it Important to Know Where to Place the Spherical Marker for Hip Replacement Digital Planning?
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 col...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Ortopedia e Traumatologia
2020-07-01
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| Series: | Revista Brasileira de Ortopedia |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-36162020000300353&tlng=pt |
| _version_ | 1797331684079697920 |
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| author | Giancarlo Cavalli Polesello Thiago Tronco Salerno João Hélio Zucarelli Rezende Walter Ricioli Junior Nayra Deise Rabelo Marcelo Cavalheiro de Queiroz |
| author_facet | Giancarlo Cavalli Polesello Thiago Tronco Salerno João Hélio Zucarelli Rezende Walter Ricioli Junior Nayra Deise Rabelo Marcelo Cavalheiro de Queiroz |
| author_sort | Giancarlo Cavalli Polesello |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-03-08T07:39:01Z |
| format | Article |
| id | doaj.art-554d2aceaa714417864c8c2fdec7808b |
| institution | Directory Open Access Journal |
| issn | 1982-4378 |
| language | English |
| last_indexed | 2024-03-08T07:39:01Z |
| publishDate | 2020-07-01 |
| publisher | Sociedade Brasileira de Ortopedia e Traumatologia |
| record_format | Article |
| series | Revista Brasileira de Ortopedia |
| spelling | doaj.art-554d2aceaa714417864c8c2fdec7808b2024-02-02T17:54:27ZengSociedade Brasileira de Ortopedia e TraumatologiaRevista Brasileira de Ortopedia1982-43782020-07-0155335335910.1055/s-0039-1693052Is it Important to Know Where to Place the Spherical Marker for Hip Replacement Digital Planning?Giancarlo Cavalli Polesellohttps://orcid.org/0000-0002-9524-8871Thiago Tronco SalernoJoão Hélio Zucarelli RezendeWalter Ricioli JuniorNayra Deise RabeloMarcelo Cavalheiro de QueirozAbstract 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.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-36162020000300353&tlng=ptarthroplasty, replacement, hiphip prosthesisradiographypelvisradiographic magnification |
| spellingShingle | Giancarlo Cavalli Polesello Thiago Tronco Salerno João Hélio Zucarelli Rezende Walter Ricioli Junior Nayra Deise Rabelo Marcelo Cavalheiro de Queiroz Is it Important to Know Where to Place the Spherical Marker for Hip Replacement Digital Planning? Revista Brasileira de Ortopedia arthroplasty, replacement, hip hip prosthesis radiography pelvis radiographic magnification |
| title | 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_short | 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 |
| topic | arthroplasty, replacement, hip hip prosthesis radiography pelvis radiographic magnification |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-36162020000300353&tlng=pt |
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