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MRI-based static and functional assessment of complex hip deformities in comparison with CT: a validation study

OBJECTIVE: This study aimed at investigating the agreement between predefined quantitative parameters of hip morphology derived from magnetic resonance imaging (MRI) and virtual range of motion (ROM) analysis using computed tomography (CT) as standard of reference. METHODS: Twenty patients (13 femal...

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Autores principales: Blum, Sophia, Franken, Lea, Hartmann, Albrecht, Thielemann, Falk, Plodeck, Verena, Danowski, Dirk, Kühn, Jens-Peter, Hoffmann, Ralf-Thorsten, Günther, Klaus-Peter, Goronzy, Jens
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer International Publishing 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7669781/
https://www.ncbi.nlm.nih.gov/pubmed/32323031
http://dx.doi.org/10.1007/s10334-020-00845-5
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author Blum, Sophia
Franken, Lea
Hartmann, Albrecht
Thielemann, Falk
Plodeck, Verena
Danowski, Dirk
Kühn, Jens-Peter
Hoffmann, Ralf-Thorsten
Günther, Klaus-Peter
Goronzy, Jens
author_facet Blum, Sophia
Franken, Lea
Hartmann, Albrecht
Thielemann, Falk
Plodeck, Verena
Danowski, Dirk
Kühn, Jens-Peter
Hoffmann, Ralf-Thorsten
Günther, Klaus-Peter
Goronzy, Jens
author_sort Blum, Sophia
collection PubMed
description OBJECTIVE: This study aimed at investigating the agreement between predefined quantitative parameters of hip morphology derived from magnetic resonance imaging (MRI) and virtual range of motion (ROM) analysis using computed tomography (CT) as standard of reference. METHODS: Twenty patients (13 females, 7 males, 16–59 years) with hip deformities underwent MRI prior to surgery. Clockwise alpha angle, femoral head and neck diameter, collum caput diaphysis angle, femoral torsion, center-edge angles, acetabular coverage of the femoral head, sourcil angle, and acetabular anteversion were measured. Additionally, tern single and combined movements were simulated using a motion analysis program. The MRI findings were compared with the corresponding results obtained by CT. Correlation of MRI with CT was assessed using different statistical methods (intraclass correlation coefficient, Bland–Altmann plot, two one-sided t test), and linear regression analysis was performed. RESULTS: The results showed near-perfect intraclass correlation coefficients (ICCs) for anteversion (0.95), acetabular sector angles (0.98–0.99), sourcil angle (0.95), and acetabular coverage (anterior 0.96, posterior 0.99). Intermethod correlation for femoral parameters showed almost perfect agreement except for the alpha angle (0.73–0.97). No significant proportional bias was detected for traditional acetabular and femoral parameters. ROM analysis was performed for 370 movements in 37 hips. For 78.4% (290/370) of the movements analysed, neither CT nor MRI detected impingement across the physiological ROM. For 18.6% (69/370) of the movements, impingement was detected by both CT and MRI, while 2.2% (8/370) of the movements with impingement in CT showed no impingement in MRI, and 0.8% (3/370) of the movements with impingement in MRI had no corresponding result in CT. CONCLUSION: Finally, it was concluded that MRI-based assessment of hip morphology and virtual ROM analysis is feasible and can be performed with good intermethod agreement in comparison to the gold standard (CT). Therefore, MRI appears to be substantially equivalent to CT for use in virtual ROM analysis and so may reasonably be used in place of CT for this purpose.
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spelling pubmed-76697812020-11-17 MRI-based static and functional assessment of complex hip deformities in comparison with CT: a validation study Blum, Sophia Franken, Lea Hartmann, Albrecht Thielemann, Falk Plodeck, Verena Danowski, Dirk Kühn, Jens-Peter Hoffmann, Ralf-Thorsten Günther, Klaus-Peter Goronzy, Jens MAGMA Research Article OBJECTIVE: This study aimed at investigating the agreement between predefined quantitative parameters of hip morphology derived from magnetic resonance imaging (MRI) and virtual range of motion (ROM) analysis using computed tomography (CT) as standard of reference. METHODS: Twenty patients (13 females, 7 males, 16–59 years) with hip deformities underwent MRI prior to surgery. Clockwise alpha angle, femoral head and neck diameter, collum caput diaphysis angle, femoral torsion, center-edge angles, acetabular coverage of the femoral head, sourcil angle, and acetabular anteversion were measured. Additionally, tern single and combined movements were simulated using a motion analysis program. The MRI findings were compared with the corresponding results obtained by CT. Correlation of MRI with CT was assessed using different statistical methods (intraclass correlation coefficient, Bland–Altmann plot, two one-sided t test), and linear regression analysis was performed. RESULTS: The results showed near-perfect intraclass correlation coefficients (ICCs) for anteversion (0.95), acetabular sector angles (0.98–0.99), sourcil angle (0.95), and acetabular coverage (anterior 0.96, posterior 0.99). Intermethod correlation for femoral parameters showed almost perfect agreement except for the alpha angle (0.73–0.97). No significant proportional bias was detected for traditional acetabular and femoral parameters. ROM analysis was performed for 370 movements in 37 hips. For 78.4% (290/370) of the movements analysed, neither CT nor MRI detected impingement across the physiological ROM. For 18.6% (69/370) of the movements, impingement was detected by both CT and MRI, while 2.2% (8/370) of the movements with impingement in CT showed no impingement in MRI, and 0.8% (3/370) of the movements with impingement in MRI had no corresponding result in CT. CONCLUSION: Finally, it was concluded that MRI-based assessment of hip morphology and virtual ROM analysis is feasible and can be performed with good intermethod agreement in comparison to the gold standard (CT). Therefore, MRI appears to be substantially equivalent to CT for use in virtual ROM analysis and so may reasonably be used in place of CT for this purpose. Springer International Publishing 2020-04-22 2020 /pmc/articles/PMC7669781/ /pubmed/32323031 http://dx.doi.org/10.1007/s10334-020-00845-5 Text en © The Author(s) 2020 Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Research Article
Blum, Sophia
Franken, Lea
Hartmann, Albrecht
Thielemann, Falk
Plodeck, Verena
Danowski, Dirk
Kühn, Jens-Peter
Hoffmann, Ralf-Thorsten
Günther, Klaus-Peter
Goronzy, Jens
MRI-based static and functional assessment of complex hip deformities in comparison with CT: a validation study
title MRI-based static and functional assessment of complex hip deformities in comparison with CT: a validation study
title_full MRI-based static and functional assessment of complex hip deformities in comparison with CT: a validation study
title_fullStr MRI-based static and functional assessment of complex hip deformities in comparison with CT: a validation study
title_full_unstemmed MRI-based static and functional assessment of complex hip deformities in comparison with CT: a validation study
title_short MRI-based static and functional assessment of complex hip deformities in comparison with CT: a validation study
title_sort mri-based static and functional assessment of complex hip deformities in comparison with ct: a validation study
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7669781/
https://www.ncbi.nlm.nih.gov/pubmed/32323031
http://dx.doi.org/10.1007/s10334-020-00845-5
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