| In vivo visualization of vascular patterns of rotator cuff tears using contrast-enhanced ultrasound. | |
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MedLine Citation:
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PMID: 20829415 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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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; Level of evidence, 3. 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 in 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: 0.77-0.86). 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. 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. |
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Authors:
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Tadanao Funakoshi; Norimasa Iwasaki; Tamotsu Kamishima; Mutsumi Nishida; Yoichi Ito; Makoto Kondo; Akio Minami |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2010-09-09 |
Journal Detail:
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Title: The American journal of sports medicine Volume: 38 ISSN: 1552-3365 ISO Abbreviation: Am J Sports Med Publication Date: 2010 Dec |
Date Detail:
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Created Date: 2010-12-02 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7609541 Medline TA: Am J Sports Med Country: United States |
Other Details:
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Languages: eng Pagination: 2464-71 Citation Subset: IM |
Affiliation:
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Department of Orthopaedic Surgery, Hokkaido University, Sapporo, Japan. tfunakoshi@gmail.com |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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