Evaluation of the reliability of lower extremity alignment measurements using EOS imaging system while standing in an even weight-bearing posture

Abstract This study aimed to analyze the reproducibility and reliability of the alignment parameters measured using the EOS image system in both limbs while standing with an even weight-bearing posture. Overall, 104 lower extremities in 52 patients were analyzed retrospectively. The patients stood w...

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Autores principales:	Byung Woo Cho, Tae-Ho Lee, Sungjun Kim, Chong-Hyuk Choi, Min Jung, Koo Yeon Lee, Sung-Hwan Kim
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/30e55ee772cd4c31afd473de217bf6ae
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spelling	oai:doaj.org-article:30e55ee772cd4c31afd473de217bf6ae2021-11-14T12:22:06ZEvaluation of the reliability of lower extremity alignment measurements using EOS imaging system while standing in an even weight-bearing posture10.1038/s41598-021-01646-z2045-2322https://doaj.org/article/30e55ee772cd4c31afd473de217bf6ae2021-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-01646-zhttps://doaj.org/toc/2045-2322Abstract This study aimed to analyze the reproducibility and reliability of the alignment parameters measured using the EOS image system in both limbs while standing with an even weight-bearing posture. Overall, 104 lower extremities in 52 patients were analyzed retrospectively. The patients stood with an even load over both lower extremities then rotated 15° in both directions. Two EOS images were acquired and 104 pairs of lower extremities were compared according to the position of the indexed lower extremities. Then, the inter-observer reliability of the EOS system and the inter-modality reliability between EOS and computed tomography (CT) were evaluated. Femoro-tibial rotation (FTR) and tibial torsion demonstrated a significant difference between the anterior and posterior positions of the indexed lower extremity. In the inter-observer reliability analysis, all values except for FTR and tibial torsion demonstrated good or very good reliability. In the anterior position, FTR demonstrated moderate, and tibial torsion demonstrated poor reliability. In the posterior position, both FTR and tibial torsion demonstrated poor reliability. In the reliability analysis between the three-dimensional (3D) EOS model and 3D CT images, all measurements of the femur demonstrated very good reliability, but measurements of the tibia did not. For the coronal and sagittal alignment parameters measured by the EOS 3D system with rotated standing posture, except for the measurement including tibial torsion., there were no significant difference for either position of the indexed extremities with high agreement between the observers as well as with the CT 3D model.Byung Woo ChoTae-Ho LeeSungjun KimChong-Hyuk ChoiMin JungKoo Yeon LeeSung-Hwan KimNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Byung Woo Cho Tae-Ho Lee Sungjun Kim Chong-Hyuk Choi Min Jung Koo Yeon Lee Sung-Hwan Kim Evaluation of the reliability of lower extremity alignment measurements using EOS imaging system while standing in an even weight-bearing posture
description	Abstract This study aimed to analyze the reproducibility and reliability of the alignment parameters measured using the EOS image system in both limbs while standing with an even weight-bearing posture. Overall, 104 lower extremities in 52 patients were analyzed retrospectively. The patients stood with an even load over both lower extremities then rotated 15° in both directions. Two EOS images were acquired and 104 pairs of lower extremities were compared according to the position of the indexed lower extremities. Then, the inter-observer reliability of the EOS system and the inter-modality reliability between EOS and computed tomography (CT) were evaluated. Femoro-tibial rotation (FTR) and tibial torsion demonstrated a significant difference between the anterior and posterior positions of the indexed lower extremity. In the inter-observer reliability analysis, all values except for FTR and tibial torsion demonstrated good or very good reliability. In the anterior position, FTR demonstrated moderate, and tibial torsion demonstrated poor reliability. In the posterior position, both FTR and tibial torsion demonstrated poor reliability. In the reliability analysis between the three-dimensional (3D) EOS model and 3D CT images, all measurements of the femur demonstrated very good reliability, but measurements of the tibia did not. For the coronal and sagittal alignment parameters measured by the EOS 3D system with rotated standing posture, except for the measurement including tibial torsion., there were no significant difference for either position of the indexed extremities with high agreement between the observers as well as with the CT 3D model.
format	article
author	Byung Woo Cho Tae-Ho Lee Sungjun Kim Chong-Hyuk Choi Min Jung Koo Yeon Lee Sung-Hwan Kim
author_facet	Byung Woo Cho Tae-Ho Lee Sungjun Kim Chong-Hyuk Choi Min Jung Koo Yeon Lee Sung-Hwan Kim
author_sort	Byung Woo Cho
title	Evaluation of the reliability of lower extremity alignment measurements using EOS imaging system while standing in an even weight-bearing posture
title_short	Evaluation of the reliability of lower extremity alignment measurements using EOS imaging system while standing in an even weight-bearing posture
title_full	Evaluation of the reliability of lower extremity alignment measurements using EOS imaging system while standing in an even weight-bearing posture
title_fullStr	Evaluation of the reliability of lower extremity alignment measurements using EOS imaging system while standing in an even weight-bearing posture
title_full_unstemmed	Evaluation of the reliability of lower extremity alignment measurements using EOS imaging system while standing in an even weight-bearing posture
title_sort	evaluation of the reliability of lower extremity alignment measurements using eos imaging system while standing in an even weight-bearing posture
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/30e55ee772cd4c31afd473de217bf6ae
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Evaluation of the reliability of lower extremity alignment measurements using EOS imaging system while standing in an even weight-bearing posture

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