Cargando…

Medial Subluxation or Dislocation of the Biceps on Magnetic Resonance Arthrography Is Reliably Correlated with Concurrent Subscapularis Full-Thickness Tears Confirmed Arthroscopically

BACKGROUND: The purpose of this study was to investigate the relationship between biceps medial subluxation/dislocation on the magnetic resonance arthrography (MRA) imaging and subscapularis full-thickness tear confirmed arthroscopically. We hypothesized that presence of a biceps medial subluxation...

Descripción completa

Detalles Bibliográficos
Autores principales: Yoon, Ji-Sang, Kim, Sung-Jae, Choi, Yun-Rak, Lee, Wonyong, Kim, Sang Ho, Chun, Yong-Min
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Hindawi 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6151251/
https://www.ncbi.nlm.nih.gov/pubmed/30271779
http://dx.doi.org/10.1155/2018/2674061
_version_ 1783357125795250176
author Yoon, Ji-Sang
Kim, Sung-Jae
Choi, Yun-Rak
Lee, Wonyong
Kim, Sang Ho
Chun, Yong-Min
author_facet Yoon, Ji-Sang
Kim, Sung-Jae
Choi, Yun-Rak
Lee, Wonyong
Kim, Sang Ho
Chun, Yong-Min
author_sort Yoon, Ji-Sang
collection PubMed
description BACKGROUND: The purpose of this study was to investigate the relationship between biceps medial subluxation/dislocation on the magnetic resonance arthrography (MRA) imaging and subscapularis full-thickness tear confirmed arthroscopically. We hypothesized that presence of a biceps medial subluxation or dislocation would strongly indicate a subscapularis full-thickness tear. METHODS: A total of 432 consecutive patients who underwent arthroscopic repair for rotator cuff tears with/without subscapularis tears at our institute were retrospectively reviewed. The inclusion criterion of this study was preoperative MRA images taken within 6 months of arthroscopic repair. The presence of medial subluxation/dislocation was evaluated on the preoperative MRA images, and subscapularis tear was confirmed on arthroscopic examination. RESULTS: Biceps subluxation/dislocation was identified in 46 of the 432 patients on MRA. Forty-five of these 46 patients also had a subscapularis full-thickness tear identified in arthroscopic examination. Among the 386 patients who did not have biceps subluxation or dislocation, 54 patients had a subscapularis full-thickness tear diagnosed arthroscopically. The presence of a biceps subluxation/dislocation could predict a subscapularis full-thickness tear with sensitivity of 45% (45/99), specificity of 99% (332/333), positive predictive value of 98% (45/46), negative predictive value of 86% (332/386), and accuracy of 87% (377(45 +332)/432). CONCLUSION: Medial subluxation/dislocation of the biceps on MRA images was highly associated with a concurrent subscapularis full-thickness tear which was confirmed arthroscopically. This association had 99% specificity and 98% positive predictive value. Therefore, if a biceps subluxation/dislocation is identified on MRA images, there is a high chance that a concurrent subscapularis full-thickness tear exists.
format Online
Article
Text
id pubmed-6151251
institution National Center for Biotechnology Information
language English
publishDate 2018
publisher Hindawi
record_format MEDLINE/PubMed
spelling pubmed-61512512018-09-30 Medial Subluxation or Dislocation of the Biceps on Magnetic Resonance Arthrography Is Reliably Correlated with Concurrent Subscapularis Full-Thickness Tears Confirmed Arthroscopically Yoon, Ji-Sang Kim, Sung-Jae Choi, Yun-Rak Lee, Wonyong Kim, Sang Ho Chun, Yong-Min Biomed Res Int Clinical Study BACKGROUND: The purpose of this study was to investigate the relationship between biceps medial subluxation/dislocation on the magnetic resonance arthrography (MRA) imaging and subscapularis full-thickness tear confirmed arthroscopically. We hypothesized that presence of a biceps medial subluxation or dislocation would strongly indicate a subscapularis full-thickness tear. METHODS: A total of 432 consecutive patients who underwent arthroscopic repair for rotator cuff tears with/without subscapularis tears at our institute were retrospectively reviewed. The inclusion criterion of this study was preoperative MRA images taken within 6 months of arthroscopic repair. The presence of medial subluxation/dislocation was evaluated on the preoperative MRA images, and subscapularis tear was confirmed on arthroscopic examination. RESULTS: Biceps subluxation/dislocation was identified in 46 of the 432 patients on MRA. Forty-five of these 46 patients also had a subscapularis full-thickness tear identified in arthroscopic examination. Among the 386 patients who did not have biceps subluxation or dislocation, 54 patients had a subscapularis full-thickness tear diagnosed arthroscopically. The presence of a biceps subluxation/dislocation could predict a subscapularis full-thickness tear with sensitivity of 45% (45/99), specificity of 99% (332/333), positive predictive value of 98% (45/46), negative predictive value of 86% (332/386), and accuracy of 87% (377(45 +332)/432). CONCLUSION: Medial subluxation/dislocation of the biceps on MRA images was highly associated with a concurrent subscapularis full-thickness tear which was confirmed arthroscopically. This association had 99% specificity and 98% positive predictive value. Therefore, if a biceps subluxation/dislocation is identified on MRA images, there is a high chance that a concurrent subscapularis full-thickness tear exists. Hindawi 2018-09-09 /pmc/articles/PMC6151251/ /pubmed/30271779 http://dx.doi.org/10.1155/2018/2674061 Text en Copyright © 2018 Ji-Sang Yoon et al. https://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Clinical Study
Yoon, Ji-Sang
Kim, Sung-Jae
Choi, Yun-Rak
Lee, Wonyong
Kim, Sang Ho
Chun, Yong-Min
Medial Subluxation or Dislocation of the Biceps on Magnetic Resonance Arthrography Is Reliably Correlated with Concurrent Subscapularis Full-Thickness Tears Confirmed Arthroscopically
title Medial Subluxation or Dislocation of the Biceps on Magnetic Resonance Arthrography Is Reliably Correlated with Concurrent Subscapularis Full-Thickness Tears Confirmed Arthroscopically
title_full Medial Subluxation or Dislocation of the Biceps on Magnetic Resonance Arthrography Is Reliably Correlated with Concurrent Subscapularis Full-Thickness Tears Confirmed Arthroscopically
title_fullStr Medial Subluxation or Dislocation of the Biceps on Magnetic Resonance Arthrography Is Reliably Correlated with Concurrent Subscapularis Full-Thickness Tears Confirmed Arthroscopically
title_full_unstemmed Medial Subluxation or Dislocation of the Biceps on Magnetic Resonance Arthrography Is Reliably Correlated with Concurrent Subscapularis Full-Thickness Tears Confirmed Arthroscopically
title_short Medial Subluxation or Dislocation of the Biceps on Magnetic Resonance Arthrography Is Reliably Correlated with Concurrent Subscapularis Full-Thickness Tears Confirmed Arthroscopically
title_sort medial subluxation or dislocation of the biceps on magnetic resonance arthrography is reliably correlated with concurrent subscapularis full-thickness tears confirmed arthroscopically
topic Clinical Study
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6151251/
https://www.ncbi.nlm.nih.gov/pubmed/30271779
http://dx.doi.org/10.1155/2018/2674061
work_keys_str_mv AT yoonjisang medialsubluxationordislocationofthebicepsonmagneticresonancearthrographyisreliablycorrelatedwithconcurrentsubscapularisfullthicknesstearsconfirmedarthroscopically
AT kimsungjae medialsubluxationordislocationofthebicepsonmagneticresonancearthrographyisreliablycorrelatedwithconcurrentsubscapularisfullthicknesstearsconfirmedarthroscopically
AT choiyunrak medialsubluxationordislocationofthebicepsonmagneticresonancearthrographyisreliablycorrelatedwithconcurrentsubscapularisfullthicknesstearsconfirmedarthroscopically
AT leewonyong medialsubluxationordislocationofthebicepsonmagneticresonancearthrographyisreliablycorrelatedwithconcurrentsubscapularisfullthicknesstearsconfirmedarthroscopically
AT kimsangho medialsubluxationordislocationofthebicepsonmagneticresonancearthrographyisreliablycorrelatedwithconcurrentsubscapularisfullthicknesstearsconfirmedarthroscopically
AT chunyongmin medialsubluxationordislocationofthebicepsonmagneticresonancearthrographyisreliablycorrelatedwithconcurrentsubscapularisfullthicknesstearsconfirmedarthroscopically