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Two Helpful MRI Signs for Evaluation of Posterolateral Bundle Tears of the Anterior Cruciate Ligament: A Pilot Study

BACKGROUND: Diagnosis of partial anterior cruciate ligament (ACL) tears is difficult on magnetic resonance imaging (MRI), particularly the isolated tears of the posterolateral bundle. PURPOSE: To describe 2 MRI signs of partial ACL tear involving the posterolateral bundle on conventional knee MRI se...

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Autores principales: Volokhina, Yulia V., Syed, Hasan M., Pham, Peter H., Blackburn, Allie K.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: SAGE Publications 2015
Materias:
25
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4622304/
https://www.ncbi.nlm.nih.gov/pubmed/26535387
http://dx.doi.org/10.1177/2325967115597641
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author Volokhina, Yulia V.
Syed, Hasan M.
Pham, Peter H.
Blackburn, Allie K.
author_facet Volokhina, Yulia V.
Syed, Hasan M.
Pham, Peter H.
Blackburn, Allie K.
author_sort Volokhina, Yulia V.
collection PubMed
description BACKGROUND: Diagnosis of partial anterior cruciate ligament (ACL) tears is difficult on magnetic resonance imaging (MRI), particularly the isolated tears of the posterolateral bundle. PURPOSE: To describe 2 MRI signs of partial ACL tear involving the posterolateral bundle on conventional knee MRI sequences, specifically, the “gap” and “footprint” signs. STUDY DESIGN: Case-control study. METHODS: We retrospectively reviewed the MRI appearance of the ACL in 11 patients with arthroscopically proven partial ACL tears isolated to the posterolateral bundle, as well as in 10 patients with arthroscopically proven intact ACLs, and evaluated for the presence of gap and/or footprint signs. RESULTS: There was high degree of sensitivity and specificity associated with the MRI findings of “gap” and “footprint” signs with arthroscopically proven isolated posterolateral bundle tears. CONCLUSION: Gap and footprint signs are suggestive of posterolateral bundle tear of the ACL, and the presence of 1 or both of these imaging findings should alert the radiologist to the possibility of a posterolateral bundle tear.
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spelling pubmed-46223042015-11-03 Two Helpful MRI Signs for Evaluation of Posterolateral Bundle Tears of the Anterior Cruciate Ligament: A Pilot Study Volokhina, Yulia V. Syed, Hasan M. Pham, Peter H. Blackburn, Allie K. Orthop J Sports Med 25 BACKGROUND: Diagnosis of partial anterior cruciate ligament (ACL) tears is difficult on magnetic resonance imaging (MRI), particularly the isolated tears of the posterolateral bundle. PURPOSE: To describe 2 MRI signs of partial ACL tear involving the posterolateral bundle on conventional knee MRI sequences, specifically, the “gap” and “footprint” signs. STUDY DESIGN: Case-control study. METHODS: We retrospectively reviewed the MRI appearance of the ACL in 11 patients with arthroscopically proven partial ACL tears isolated to the posterolateral bundle, as well as in 10 patients with arthroscopically proven intact ACLs, and evaluated for the presence of gap and/or footprint signs. RESULTS: There was high degree of sensitivity and specificity associated with the MRI findings of “gap” and “footprint” signs with arthroscopically proven isolated posterolateral bundle tears. CONCLUSION: Gap and footprint signs are suggestive of posterolateral bundle tear of the ACL, and the presence of 1 or both of these imaging findings should alert the radiologist to the possibility of a posterolateral bundle tear. SAGE Publications 2015-08-03 /pmc/articles/PMC4622304/ /pubmed/26535387 http://dx.doi.org/10.1177/2325967115597641 Text en © The Author(s) 2015 http://creativecommons.org/licenses/by-nc-nd/3.0/ This article is distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License (http://www.creativecommons.org/licenses/by-nc-nd/3.0/) which permits non-commercial use, reproduction and distribution of the work as published without adaptation or alteration, without further permission provided the original work is attributed as specified on the SAGE and Open Access page (https://us.sagepub.com/en-us/nam/open-access-at-sage).
spellingShingle 25
Volokhina, Yulia V.
Syed, Hasan M.
Pham, Peter H.
Blackburn, Allie K.
Two Helpful MRI Signs for Evaluation of Posterolateral Bundle Tears of the Anterior Cruciate Ligament: A Pilot Study
title Two Helpful MRI Signs for Evaluation of Posterolateral Bundle Tears of the Anterior Cruciate Ligament: A Pilot Study
title_full Two Helpful MRI Signs for Evaluation of Posterolateral Bundle Tears of the Anterior Cruciate Ligament: A Pilot Study
title_fullStr Two Helpful MRI Signs for Evaluation of Posterolateral Bundle Tears of the Anterior Cruciate Ligament: A Pilot Study
title_full_unstemmed Two Helpful MRI Signs for Evaluation of Posterolateral Bundle Tears of the Anterior Cruciate Ligament: A Pilot Study
title_short Two Helpful MRI Signs for Evaluation of Posterolateral Bundle Tears of the Anterior Cruciate Ligament: A Pilot Study
title_sort two helpful mri signs for evaluation of posterolateral bundle tears of the anterior cruciate ligament: a pilot study
topic 25
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4622304/
https://www.ncbi.nlm.nih.gov/pubmed/26535387
http://dx.doi.org/10.1177/2325967115597641
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