Validation study of novel grading system for ulnar collateral ligament injury of the elbow with high-resolution magnetic resonance imaging

Background: Recently, magnetic resonance imaging (MRI) classification of medial ulnar collateral ligament (UCL) tears has been introduced, but little is known about the relationship between MRI grading and medial joint laxity. It has been reported that microscopy coils could make it possible to achi...

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Main Authors: Shota Hoshika, MD, PhD, Keisuke Matsuki, MD, PhD, Toshihiko Izumi, MD, PhD, Yasutaka Takeuchi, MD, Norimasa Takahashi, MD, PhD, Hiroyuki Sugaya, MD, PhD
Format: Article
Language:English
Published: Elsevier 2021-09-01
Series:JSES International
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2666638321001602
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author Shota Hoshika, MD, PhD
Keisuke Matsuki, MD, PhD
Toshihiko Izumi, MD, PhD
Yasutaka Takeuchi, MD
Norimasa Takahashi, MD, PhD
Hiroyuki Sugaya, MD, PhD
author_facet Shota Hoshika, MD, PhD
Keisuke Matsuki, MD, PhD
Toshihiko Izumi, MD, PhD
Yasutaka Takeuchi, MD
Norimasa Takahashi, MD, PhD
Hiroyuki Sugaya, MD, PhD
author_sort Shota Hoshika, MD, PhD
collection DOAJ
description Background: Recently, magnetic resonance imaging (MRI) classification of medial ulnar collateral ligament (UCL) tears has been introduced, but little is known about the relationship between MRI grading and medial joint laxity. It has been reported that microscopy coils could make it possible to achieve high-resolution images of upper extremities with a superior diagnostic ability to conventional MRI. However, there is no report that has compared the diagnostic reliability between microscopic and conventional MRI. The purpose of this study was to assess the relationship between MRI findings and medial joint laxity evaluated with stress ultrasound (US). Secondary objective was to compare the reliabilities of UCL evaluation between microscopic and conventional MRI. Methods: One-hundred thirty baseball players who underwent MRI of the elbow for the diagnosis of UCL injury using both conventional and microscopy MRI were included in this study. They also underwent stress US for assessment of medial joint laxity against valgus stress. Our MRI grading system for UCL injuries was compared to medial joint laxity evaluated with stress US. The intrarater and interrater reliabilities of our grading system were assessed with both microscopic and conventional MRI. Results: Our grading system was related to valgus stability, especially with microscopic MRI. The reliabilities were fair when combined with microscopic MRI, which exhibited better intrarater and interrater reliabilities than conventional MRI. Conclusion: High-resolution microscopic MRI may contribute to the accurate diagnosis of UCL injuries.
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spelling doaj.art-55c844aeb5254a5dbadff216f2c0ae382022-12-21T22:37:44ZengElsevierJSES International2666-63832021-09-0155936941Validation study of novel grading system for ulnar collateral ligament injury of the elbow with high-resolution magnetic resonance imagingShota Hoshika, MD, PhD0Keisuke Matsuki, MD, PhD1Toshihiko Izumi, MD, PhD2Yasutaka Takeuchi, MD3Norimasa Takahashi, MD, PhD4Hiroyuki Sugaya, MD, PhD5Shoulder & Elbow Service, Funabashi Orthopaedic Sports Medicine & Joint Center, Funabashi, Chiba, Japan; Corresponding author: Shota Hoshika, MD, PhD, Shoulder & Elbow Service, Funabashi Orthopaedic Sports Medicine & Joint Center, 1-833 Hasama, Funabashi, Chiba 274-0822, JAPAN.Shoulder & Elbow Service, Funabashi Orthopaedic Sports Medicine & Joint Center, Funabashi, Chiba, JapanDepartment of Orthopaedic Surgery, Izumi Regional Medical Center, Kagoshima, JapanShoulder & Elbow Service, Funabashi Orthopaedic Sports Medicine & Joint Center, Funabashi, Chiba, JapanShoulder & Elbow Service, Funabashi Orthopaedic Sports Medicine & Joint Center, Funabashi, Chiba, JapanShoulder & Elbow Service, Funabashi Orthopaedic Sports Medicine & Joint Center, Funabashi, Chiba, JapanBackground: Recently, magnetic resonance imaging (MRI) classification of medial ulnar collateral ligament (UCL) tears has been introduced, but little is known about the relationship between MRI grading and medial joint laxity. It has been reported that microscopy coils could make it possible to achieve high-resolution images of upper extremities with a superior diagnostic ability to conventional MRI. However, there is no report that has compared the diagnostic reliability between microscopic and conventional MRI. The purpose of this study was to assess the relationship between MRI findings and medial joint laxity evaluated with stress ultrasound (US). Secondary objective was to compare the reliabilities of UCL evaluation between microscopic and conventional MRI. Methods: One-hundred thirty baseball players who underwent MRI of the elbow for the diagnosis of UCL injury using both conventional and microscopy MRI were included in this study. They also underwent stress US for assessment of medial joint laxity against valgus stress. Our MRI grading system for UCL injuries was compared to medial joint laxity evaluated with stress US. The intrarater and interrater reliabilities of our grading system were assessed with both microscopic and conventional MRI. Results: Our grading system was related to valgus stability, especially with microscopic MRI. The reliabilities were fair when combined with microscopic MRI, which exhibited better intrarater and interrater reliabilities than conventional MRI. Conclusion: High-resolution microscopic MRI may contribute to the accurate diagnosis of UCL injuries.http://www.sciencedirect.com/science/article/pii/S2666638321001602Reliabilitygrading systemelbowulnar collateral ligamentmicroscopic MRIultrasound
spellingShingle Shota Hoshika, MD, PhD
Keisuke Matsuki, MD, PhD
Toshihiko Izumi, MD, PhD
Yasutaka Takeuchi, MD
Norimasa Takahashi, MD, PhD
Hiroyuki Sugaya, MD, PhD
Validation study of novel grading system for ulnar collateral ligament injury of the elbow with high-resolution magnetic resonance imaging
JSES International
Reliability
grading system
elbow
ulnar collateral ligament
microscopic MRI
ultrasound
title Validation study of novel grading system for ulnar collateral ligament injury of the elbow with high-resolution magnetic resonance imaging
title_full Validation study of novel grading system for ulnar collateral ligament injury of the elbow with high-resolution magnetic resonance imaging
title_fullStr Validation study of novel grading system for ulnar collateral ligament injury of the elbow with high-resolution magnetic resonance imaging
title_full_unstemmed Validation study of novel grading system for ulnar collateral ligament injury of the elbow with high-resolution magnetic resonance imaging
title_short Validation study of novel grading system for ulnar collateral ligament injury of the elbow with high-resolution magnetic resonance imaging
title_sort validation study of novel grading system for ulnar collateral ligament injury of the elbow with high resolution magnetic resonance imaging
topic Reliability
grading system
elbow
ulnar collateral ligament
microscopic MRI
ultrasound
url http://www.sciencedirect.com/science/article/pii/S2666638321001602
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