The role of stereoradiography in the evaluation of lower limb deformities
Abstract Deformities of the lower limbs are a common condition and can lead to changes in gait, as well as affecting the function and longevity of the hips, knees, and spine. A systematic approach is essential to achieve the desired therapeutic result with the lowest rate of complications. Panoramic radiography is a widely available, low-cost method that is commonly used in order to assess the length and angular deformities of the lower limbs, by measuring the length and angular deviations of the axes. However, because the combination of lower limb deformities in two or three orthogonal planes is common, conventional radiography lacks accuracy because it is a two-dimensional imaging method. Therefore, the measurements of valgus/varus deformities on X-rays restricted to the coronal plane will present increasing variations in measurements depending on the degree of flexion/recurvatum alignment, anomalous bone torsions, or, last but not least, inappropriate patient positioning. Low-dose biplanar stereoradiography using three-dimensional models increases the accuracy of the measurement of several parameters used in the evaluation of lower limb alignment, including lengths, axes, and tibial/femoral torsions, parameters that could previously be evaluated only by computed tomography. Stereoradiography also makes it possible to perform a head-to-toe evaluation, as well as to evaluate the interactions among the lower limbs, pelvis, and spine.
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Publicação do Colégio Brasileiro de Radiologia e Diagnóstico por Imagem
2022
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oai:scielo:S0100-398420220002001042022-05-20The role of stereoradiography in the evaluation of lower limb deformitiesSilva,Flávio DuarteChemin,Renan NogueiraOrmond Filho,Alípio GomesGuimarães,Júlio BrandãoZorzenoni,Fernando OmettoNico,Marcelo Astolfi Caetano Radiography Lower limb Lower extremity deformities Diagnostic imaging Abstract Deformities of the lower limbs are a common condition and can lead to changes in gait, as well as affecting the function and longevity of the hips, knees, and spine. A systematic approach is essential to achieve the desired therapeutic result with the lowest rate of complications. Panoramic radiography is a widely available, low-cost method that is commonly used in order to assess the length and angular deformities of the lower limbs, by measuring the length and angular deviations of the axes. However, because the combination of lower limb deformities in two or three orthogonal planes is common, conventional radiography lacks accuracy because it is a two-dimensional imaging method. Therefore, the measurements of valgus/varus deformities on X-rays restricted to the coronal plane will present increasing variations in measurements depending on the degree of flexion/recurvatum alignment, anomalous bone torsions, or, last but not least, inappropriate patient positioning. Low-dose biplanar stereoradiography using three-dimensional models increases the accuracy of the measurement of several parameters used in the evaluation of lower limb alignment, including lengths, axes, and tibial/femoral torsions, parameters that could previously be evaluated only by computed tomography. Stereoradiography also makes it possible to perform a head-to-toe evaluation, as well as to evaluate the interactions among the lower limbs, pelvis, and spine.info:eu-repo/semantics/openAccessPublicação do Colégio Brasileiro de Radiologia e Diagnóstico por ImagemRadiologia Brasileira v.55 n.2 20222022-03-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-39842022000200104en10.1590/0100-3984.2021.0104 |
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Silva,Flávio Duarte Chemin,Renan Nogueira Ormond Filho,Alípio Gomes Guimarães,Júlio Brandão Zorzenoni,Fernando Ometto Nico,Marcelo Astolfi Caetano |
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Silva,Flávio Duarte Chemin,Renan Nogueira Ormond Filho,Alípio Gomes Guimarães,Júlio Brandão Zorzenoni,Fernando Ometto Nico,Marcelo Astolfi Caetano The role of stereoradiography in the evaluation of lower limb deformities |
author_facet |
Silva,Flávio Duarte Chemin,Renan Nogueira Ormond Filho,Alípio Gomes Guimarães,Júlio Brandão Zorzenoni,Fernando Ometto Nico,Marcelo Astolfi Caetano |
author_sort |
Silva,Flávio Duarte |
title |
The role of stereoradiography in the evaluation of lower limb deformities |
title_short |
The role of stereoradiography in the evaluation of lower limb deformities |
title_full |
The role of stereoradiography in the evaluation of lower limb deformities |
title_fullStr |
The role of stereoradiography in the evaluation of lower limb deformities |
title_full_unstemmed |
The role of stereoradiography in the evaluation of lower limb deformities |
title_sort |
role of stereoradiography in the evaluation of lower limb deformities |
description |
Abstract Deformities of the lower limbs are a common condition and can lead to changes in gait, as well as affecting the function and longevity of the hips, knees, and spine. A systematic approach is essential to achieve the desired therapeutic result with the lowest rate of complications. Panoramic radiography is a widely available, low-cost method that is commonly used in order to assess the length and angular deformities of the lower limbs, by measuring the length and angular deviations of the axes. However, because the combination of lower limb deformities in two or three orthogonal planes is common, conventional radiography lacks accuracy because it is a two-dimensional imaging method. Therefore, the measurements of valgus/varus deformities on X-rays restricted to the coronal plane will present increasing variations in measurements depending on the degree of flexion/recurvatum alignment, anomalous bone torsions, or, last but not least, inappropriate patient positioning. Low-dose biplanar stereoradiography using three-dimensional models increases the accuracy of the measurement of several parameters used in the evaluation of lower limb alignment, including lengths, axes, and tibial/femoral torsions, parameters that could previously be evaluated only by computed tomography. Stereoradiography also makes it possible to perform a head-to-toe evaluation, as well as to evaluate the interactions among the lower limbs, pelvis, and spine. |
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Publicação do Colégio Brasileiro de Radiologia e Diagnóstico por Imagem |
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2022 |
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http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-39842022000200104 |
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