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Skeletal Radiology
Published in: Skeletal Radiology 11/2012

01-11-2012 | Scientific Article

MR imaging of subscapularis tendon injury in the setting of anterior shoulder dislocation

Authors: Soterios Gyftopoulos, Elizabeth Carpenter, Jonathan Kazam, James Babb, Jenny Bencardino

Published in: Skeletal Radiology | Issue 11/2012

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Abstract

Objective

To evaluate the degree and location patterns of subscapularis tendon injury in patients with prior anterior shoulder dislocation (ASD).

Material and methods

Forty-five consecutive MR shoulder examinations in patients with a history of ASD and 20 consecutive MR examinations in patients without prior dislocation were reviewed. Two readers assessed for the presence and location of tendinosis and tearing in the subscapularis tendon, which was divided into three segments: superior, middle, and inferior. The readers also documented the presence of anterior labral tears, osseous Bankart defects and Hill–Sachs lesions. Fisher’s exact tests were performed to analyze the different types of pathology and their locations.

Results

Subscapularis tendinosis, and partial thickness and full thickness tears were more common in patients with a history of ASD. Tendinosis was found in 60-64.4% of the dislocation patients compared with 40% of the non-dislocation group. When stratified by location, the middle and inferior thirds were the most commonly affected with statistical significance (p < 0.05) found in tearing of the inferior third. Anterior labral tears, osseous Bankart defects, and Hill–Sachs lesions were more common in the dislocation group with statistically significant associations with tendinosis in the middle and inferior thirds and tearing of the middle third (p < 0.05).

Conclusion

Our study suggests an association between middle and inferior subscapularis tendon pathology and prior anterior shoulder dislocation. Based on our results, careful MR assessment of the subscapularis tendon by the radiologist is indicated in the setting of ASD as injury of this structure can be symptomatic and may be amenable to treatment.
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Metadata
Title
MR imaging of subscapularis tendon injury in the setting of anterior shoulder dislocation
Authors
Soterios Gyftopoulos
Elizabeth Carpenter
Jonathan Kazam
James Babb
Jenny Bencardino
Publication date
01-11-2012
Publisher
Springer-Verlag
Published in
Skeletal Radiology / Issue 11/2012
Print ISSN: 0364-2348
Electronic ISSN: 1432-2161
DOI
https://doi.org/10.1007/s00256-012-1369-6

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