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In Vivo Visualization of Vascular Patterns of Rotator Cuff Tears Using Contrast-Enhanced Ultrasound

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Title: In Vivo Visualization of Vascular Patterns of Rotator Cuff Tears Using Contrast-Enhanced Ultrasound
Authors: Funakoshi, Tadanao Browse this author →KAKEN DB
Iwasaki, Norimasa Browse this author
Kamishima, Tamotsu Browse this author
Nishida, Mutsumi Browse this author
Ito, Yoichi Browse this author
Kondo, Makoto Browse this author
Minami, Akio Browse this author
Keywords: rotator cuff
contrast-enhanced ultrasound
subacromial bursa
Issue Date: Dec-2010
Publisher: Sage Publications
Journal Title: American Journal of Sports Medicine
Volume: 38
Issue: 12
Start Page: 2464
End Page: 2471
Publisher DOI: 10.1177/0363546510375536
PMID: 20829415
Abstract: Background: Hypoxia and decreased blood supply have been proposed as risks for tendon rupture. Visualization of the vascularity of intact and torn rotator cuffs would be useful for improving treatments for rotator cuff tear. Purpose: To assess vascularity inside a tendon or an adjacent rotator cuff insertion point in patients differing in age and extent of damage to the tendon. Study Design: Cross-sectional study. Methods: Ten volunteers (all men) and 15 patients (10 men, 5 women) consented to participate in the study. Contrast agent for enhanced ultrasound was injected intravenously. Enhanced ultrasound images of the torn cuff and the contralateral shoulder were recorded for 1 minute. Four small regions of interest, the articular and bursal sides of the tendon and the medial and lateral sides of the bursa, were studied on all shoulders. Results: There was a significant decrease in blood flow in the intratendinous region in elderly subjects compared with young subjects but age had no effect on blood flow in bursal tissue. Blood flow in ruptured rotator cuffs did not differ from that in intact rotator cuffs. The intraclass correlation coefficient for intraobserver reproducibility was 0.82 (95% confidence interval, 0.77 to 0.86). Conclusions: The findings of this investigation were the hypovascular pattern in intratendinous tissue compared with the subacromial bursa, the age-related decrease in intratendinous vascularity, and the hypovascular pattern in the tendon, regardless of rupture of the tendon. Clinical Relevance: Clarification of vascular patterns inside or around the torn ends of a rotator cuff will assist in the development of successful treatments for torn rotator cuffs.
Rights: The final, definitive version of this paper has been published in American Journal of Sports Medicine, 38/12, Dec/2010 by SAGE Publications Ltd, All rights reserved. © American Orthopaedic Society for Sports Medicine
Type: article (author version)
Appears in Collections:北海道大学病院 (Hokkaido University Hospital) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 船越 忠直

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