Evaluation of the Southwick Angle in Two Hundred Hips of Asymptomatic Children and Adolescents
Objectives To measure the mean value of the Southwick angle using two different methods, the manual (1) and digital (2) methods, and to establish a normality value. Methods A primarily descriptive study with 100 children and adolescents. Individuals with orthopedic complaints regarding the hips an...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Sociedade Brasileira de Ortopedia e Traumatologia. Published by Thieme Revinter Publicações Ltda
2020
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7316541/ https://www.ncbi.nlm.nih.gov/pubmed/32616983 http://dx.doi.org/10.1055/s-0040-1701289 |
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author | Monte, Felipe Alves Melo, Paulo Sergio Alves, Amaro Oliveira Junior, José Venâncio Alencar, George Soares, Fabio Couto |
author_facet | Monte, Felipe Alves Melo, Paulo Sergio Alves, Amaro Oliveira Junior, José Venâncio Alencar, George Soares, Fabio Couto |
author_sort | Monte, Felipe Alves |
collection | PubMed |
description | Objectives To measure the mean value of the Southwick angle using two different methods, the manual (1) and digital (2) methods, and to establish a normality value. Methods A primarily descriptive study with 100 children and adolescents. Individuals with orthopedic complaints regarding the hips and/or knees or gait alterations were excluded. For each patient, an X-ray was performed on the lateral incidence of Lowenstein, totaling 100 radiographs and 200 hips. The Southwick angle was measured in two different ways by the same researcher: the conventional method (1), tracing the lines with pencils and measuring the angle with the use of a goniometer and negatoscope, and through the GNU Image Manipulation Program (GIMP) image editor (open source), version 2.7.0 (2), in which the lines were plotted and the angles of both hips were gauged on each radiograph. Later, we sought to evaluate the correlation between the two methods and to verify the mean Southwick angle by categorically correlating it by gender, age group and body mass index (BMI) in asymptomatic children and adolescents. All radiographs were authorized by the children and adolescents' parents/legal guardians. The study was approved by the ethics committee of the institutions in which the research was conducted. Results The mean of the Southwick angles obtained by the conventional method was of 8.7° (±2.0°), and, by the digital method, it was of 9.9° (±1.8°). The angle obtained by the two methods was statistically significant ( p < 0.001). The majority of the studied population (95%) had a body mass index (BMI) > 18.5, and the mean of the angles was within the previously established value (∼ 10°). Conclusion For the first time, using a substantial sample size, a normal value for the Southwick angle measured in asymptomatic individuals was demonstrated. In addition, the image editor proved to be a reliable method to measuring the Southwick angle. |
format | Online Article Text |
id | pubmed-7316541 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Sociedade Brasileira de Ortopedia e Traumatologia. Published by Thieme Revinter Publicações Ltda |
record_format | MEDLINE/PubMed |
spelling | pubmed-73165412020-07-01 Evaluation of the Southwick Angle in Two Hundred Hips of Asymptomatic Children and Adolescents Monte, Felipe Alves Melo, Paulo Sergio Alves, Amaro Oliveira Junior, José Venâncio Alencar, George Soares, Fabio Couto Rev Bras Ortop (Sao Paulo) Objectives To measure the mean value of the Southwick angle using two different methods, the manual (1) and digital (2) methods, and to establish a normality value. Methods A primarily descriptive study with 100 children and adolescents. Individuals with orthopedic complaints regarding the hips and/or knees or gait alterations were excluded. For each patient, an X-ray was performed on the lateral incidence of Lowenstein, totaling 100 radiographs and 200 hips. The Southwick angle was measured in two different ways by the same researcher: the conventional method (1), tracing the lines with pencils and measuring the angle with the use of a goniometer and negatoscope, and through the GNU Image Manipulation Program (GIMP) image editor (open source), version 2.7.0 (2), in which the lines were plotted and the angles of both hips were gauged on each radiograph. Later, we sought to evaluate the correlation between the two methods and to verify the mean Southwick angle by categorically correlating it by gender, age group and body mass index (BMI) in asymptomatic children and adolescents. All radiographs were authorized by the children and adolescents' parents/legal guardians. The study was approved by the ethics committee of the institutions in which the research was conducted. Results The mean of the Southwick angles obtained by the conventional method was of 8.7° (±2.0°), and, by the digital method, it was of 9.9° (±1.8°). The angle obtained by the two methods was statistically significant ( p < 0.001). The majority of the studied population (95%) had a body mass index (BMI) > 18.5, and the mean of the angles was within the previously established value (∼ 10°). Conclusion For the first time, using a substantial sample size, a normal value for the Southwick angle measured in asymptomatic individuals was demonstrated. In addition, the image editor proved to be a reliable method to measuring the Southwick angle. Sociedade Brasileira de Ortopedia e Traumatologia. Published by Thieme Revinter Publicações Ltda 2020-06 2020-03-23 /pmc/articles/PMC7316541/ /pubmed/32616983 http://dx.doi.org/10.1055/s-0040-1701289 Text en https://creativecommons.org/licenses/by-nc-nd/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives License, which permits unrestricted reproduction and distribution, for non-commercial purposes only; and use and reproduction, but not distribution, of adapted material for non-commercial purposes only, provided the original work is properly cited. |
spellingShingle | Monte, Felipe Alves Melo, Paulo Sergio Alves, Amaro Oliveira Junior, José Venâncio Alencar, George Soares, Fabio Couto Evaluation of the Southwick Angle in Two Hundred Hips of Asymptomatic Children and Adolescents |
title |
Evaluation of the Southwick Angle in Two Hundred Hips of Asymptomatic Children and Adolescents
|
title_full |
Evaluation of the Southwick Angle in Two Hundred Hips of Asymptomatic Children and Adolescents
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title_fullStr |
Evaluation of the Southwick Angle in Two Hundred Hips of Asymptomatic Children and Adolescents
|
title_full_unstemmed |
Evaluation of the Southwick Angle in Two Hundred Hips of Asymptomatic Children and Adolescents
|
title_short |
Evaluation of the Southwick Angle in Two Hundred Hips of Asymptomatic Children and Adolescents
|
title_sort | evaluation of the southwick angle in two hundred hips of asymptomatic children and adolescents |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7316541/ https://www.ncbi.nlm.nih.gov/pubmed/32616983 http://dx.doi.org/10.1055/s-0040-1701289 |
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