Evaluation of Medial Meniscal Extrusion Using Radiography

Recently, there has been increasing interest in medial meniscal extrusion (MME), but few reports have evaluated MME via X-ray. In this study, the amount of MME and meniscal height at the medial border of the tibia were measured via X-ray with gradation processing. The extrusion length divided by the...

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Main Authors: Shohei Murata, Hiroaki Kijima, Kimio Saito, Hidetomo Saito, Takanori Miura, Manabu Akagawa, Hiroaki Tsukamoto, Kana Sasaki, Toshihito Ebina, Koji Nozaka, Naohisa Miyakoshi
Format: Article
Language:English
Published: MDPI AG 2023-08-01
Series:Journal of Clinical Medicine
Subjects:
Online Access:https://www.mdpi.com/2077-0383/12/16/5268
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author Shohei Murata
Hiroaki Kijima
Kimio Saito
Hidetomo Saito
Takanori Miura
Manabu Akagawa
Hiroaki Tsukamoto
Kana Sasaki
Toshihito Ebina
Koji Nozaka
Naohisa Miyakoshi
author_facet Shohei Murata
Hiroaki Kijima
Kimio Saito
Hidetomo Saito
Takanori Miura
Manabu Akagawa
Hiroaki Tsukamoto
Kana Sasaki
Toshihito Ebina
Koji Nozaka
Naohisa Miyakoshi
author_sort Shohei Murata
collection DOAJ
description Recently, there has been increasing interest in medial meniscal extrusion (MME), but few reports have evaluated MME via X-ray. In this study, the amount of MME and meniscal height at the medial border of the tibia were measured via X-ray with gradation processing. The extrusion length divided by the meniscal height yields the meniscal extrusion ratio, which was used as an index. In addition, the medial meniscal length of the part protruding from the medial border of the tibia on MRI was measured as an absolute value. Then, the correlation between the meniscal extrusion ratio and the amount of MME on MRI was examined, and there was a strong correlation between the meniscal extrusion ratio via X-ray and the amount of MME on MRI (correlation coefficient 0.860, <i>p</i> < 0.0001). The cut-off value of the meniscal extrusion ratio via X-ray for positive meniscal extrusion on MRI was 0.50, with an AUC of 0.9825, sensitivity of 0.9063, and specificity of 0.8663. From the present study, it was possible to measure the extrusion length and meniscal height via gradation processing, with X-ray and without MRI, and to calculate the meniscal extrusion ratio, which strongly correlates with the amount of MME on MRI.
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spelling doaj.art-5f2b1e144cd5464bb7980bec99377a762023-11-19T01:40:37ZengMDPI AGJournal of Clinical Medicine2077-03832023-08-011216526810.3390/jcm12165268Evaluation of Medial Meniscal Extrusion Using RadiographyShohei Murata0Hiroaki Kijima1Kimio Saito2Hidetomo Saito3Takanori Miura4Manabu Akagawa5Hiroaki Tsukamoto6Kana Sasaki7Toshihito Ebina8Koji Nozaka9Naohisa Miyakoshi10Akita Sports Arthroscopy Knee Group (ASAKG), 1-1-1 Hondo, Akita 010-8543, JapanAkita Sports Arthroscopy Knee Group (ASAKG), 1-1-1 Hondo, Akita 010-8543, JapanAkita Sports Arthroscopy Knee Group (ASAKG), 1-1-1 Hondo, Akita 010-8543, JapanAkita Sports Arthroscopy Knee Group (ASAKG), 1-1-1 Hondo, Akita 010-8543, JapanAkita Sports Arthroscopy Knee Group (ASAKG), 1-1-1 Hondo, Akita 010-8543, JapanAkita Sports Arthroscopy Knee Group (ASAKG), 1-1-1 Hondo, Akita 010-8543, JapanAkita Sports Arthroscopy Knee Group (ASAKG), 1-1-1 Hondo, Akita 010-8543, JapanAkita Sports Arthroscopy Knee Group (ASAKG), 1-1-1 Hondo, Akita 010-8543, JapanDepartment of Orthopedic Surgery, Kakunodate General Hospital, 3 Iwase, Senboku 014-0394, JapanDepartment of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita 010-8543, JapanDepartment of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita 010-8543, JapanRecently, there has been increasing interest in medial meniscal extrusion (MME), but few reports have evaluated MME via X-ray. In this study, the amount of MME and meniscal height at the medial border of the tibia were measured via X-ray with gradation processing. The extrusion length divided by the meniscal height yields the meniscal extrusion ratio, which was used as an index. In addition, the medial meniscal length of the part protruding from the medial border of the tibia on MRI was measured as an absolute value. Then, the correlation between the meniscal extrusion ratio and the amount of MME on MRI was examined, and there was a strong correlation between the meniscal extrusion ratio via X-ray and the amount of MME on MRI (correlation coefficient 0.860, <i>p</i> < 0.0001). The cut-off value of the meniscal extrusion ratio via X-ray for positive meniscal extrusion on MRI was 0.50, with an AUC of 0.9825, sensitivity of 0.9063, and specificity of 0.8663. From the present study, it was possible to measure the extrusion length and meniscal height via gradation processing, with X-ray and without MRI, and to calculate the meniscal extrusion ratio, which strongly correlates with the amount of MME on MRI.https://www.mdpi.com/2077-0383/12/16/5268diagnostic imagingkneemedial meniscal extrusionradiographymagnetic resonance imaging
spellingShingle Shohei Murata
Hiroaki Kijima
Kimio Saito
Hidetomo Saito
Takanori Miura
Manabu Akagawa
Hiroaki Tsukamoto
Kana Sasaki
Toshihito Ebina
Koji Nozaka
Naohisa Miyakoshi
Evaluation of Medial Meniscal Extrusion Using Radiography
Journal of Clinical Medicine
diagnostic imaging
knee
medial meniscal extrusion
radiography
magnetic resonance imaging
title Evaluation of Medial Meniscal Extrusion Using Radiography
title_full Evaluation of Medial Meniscal Extrusion Using Radiography
title_fullStr Evaluation of Medial Meniscal Extrusion Using Radiography
title_full_unstemmed Evaluation of Medial Meniscal Extrusion Using Radiography
title_short Evaluation of Medial Meniscal Extrusion Using Radiography
title_sort evaluation of medial meniscal extrusion using radiography
topic diagnostic imaging
knee
medial meniscal extrusion
radiography
magnetic resonance imaging
url https://www.mdpi.com/2077-0383/12/16/5268
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