Magnetic Resonance Imaging Findings in Dogs with Confirmed Shoulder Pathology

To evaluate the diagnostic potential of magnetic resonance imaging (MRI) compared with a reference standard, arthroscopic and/or open surgery, in dogs with soft tissue shoulder pathology. Retrospective study. Dogs (n=21). Magnetic resonance (MR) images were retrospectively evaluated in 21 dogs that...

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Bibliographic Details
Published in:	Veterinary surgery Vol. 37; no. 7; pp. 631 - 638
Main Authors:	MURPHY, SEAN E, BALLEGEER, ELIZABETH A, FORREST, LISA J, SCHAEFER, SUSAN L
Format:	Journal Article
Language:	English
Published:	Malden, USA Malden, USA : Blackwell Publishing Inc 01-10-2008 Blackwell Publishing Inc Blackwell Publishing Ltd
Subjects:	accuracy animal injuries Animals arthroscopic surgery Arthroscopy - veterinary diagnostic techniques Dog Diseases - diagnosis Dog Diseases - surgery Dogs Female inflammation Injuries joint diseases ligaments Ligaments, Articular - pathology magnetic resonance imaging Magnetic Resonance Imaging - methods Magnetic Resonance Imaging - standards Magnetic Resonance Imaging - veterinary Male Medical diagnosis NMR Nuclear magnetic resonance Reproducibility of Results Retrospective Studies Sensitivity and Specificity Shoulder Shoulder - pathology Shoulder Joint - pathology shoulders skeletal muscle Soft Tissue Injuries - diagnosis Soft Tissue Injuries - surgery Soft Tissue Injuries - veterinary surgery tendons Tendons - pathology Tissues Veterinary services
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Summary:	To evaluate the diagnostic potential of magnetic resonance imaging (MRI) compared with a reference standard, arthroscopic and/or open surgery, in dogs with soft tissue shoulder pathology. Retrospective study. Dogs (n=21). Magnetic resonance (MR) images were retrospectively evaluated in 21 dogs that had surgically identified soft tissue shoulder pathology. The musculotendinous units of the biceps, infraspinatus, teres minor, supraspinatus, subscapularis, and the medial and lateral glenohumeral ligaments (MGHL and LGHL) were graded as either normal or abnormal. Abnormal structures were further classified as being either inflamed, partially torn, or fully torn. Impingement of the biceps tendon was also evaluated. Results were reported in terms of agreement and concordance between MRI findings and surgical findings. Agreement was defined as the percentage of times MRI findings concurred with surgical findings with respect to a structure being either normal or abnormal. Concordance was defined as the percentage of times MRI concurred with the exact surgically assessed pathology when abnormality was identified. The findings were biceps tendon: 90% agreement with 100% concordance; subscapularis: 95% agreement with 62% concordance; MGHL: 84% agreement with 83% concordance; LGHL: 88% agreement with 100% concordance; infraspinatus: 100% both agreement and concordance; biceps tendon impingement: 90% agreement with 100% concordance. Soft tissue abnormalities of the canine shoulder were readily identified on preoperative MR images. MRI shows great potential as a diagnostic tool in the evaluation of canine shoulder disease.
Bibliography:	http://dx.doi.org/10.1111/j.1532-950X.2008.00429.x istex:4C16B9EEF761123596DE75E194698EC6D91162B4 ark:/67375/WNG-FSFZ3LKZ-G ArticleID:VSU00429 This study was presented in part at the Advanced Canine Arthroscopy Symposium, August 2007, Naples, FL. Supported by a grant from the Companion Animal Fund, School of Veterinary Medicine, University of Wisconsin, Madison, WI. ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0161-3499 1532-950X
DOI:	10.1111/j.1532-950X.2008.00429.x