Abnormalities on MRI of the subscapularis tendon in the presence of a full-thickness supraspinatus tendon tear.

Abnormalities on MRI of the subscapularis tendon in the presence of a full-thickness supraspinatus tendon tear. Research Abstract Details 

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Abnormalities on MRI of the subscapularis tendon in the presence of a full-thickness supraspinatus tendon tear. Abstract Text:

Diane Bergin,Laurence Parker,Adam Zoga,William Morrison,

OBJECTIVE: Our objective was to determine the association between size and chronicity of full-thickness supraspinatus tendon tears with subscapularis tendon abnormalities on MRI. MATERIALS AND METHODS: One hundred forty-two MRI examinations with full-thickness supraspinatus tendon tears were categorized on the basis of the supraspinatus muscle (SS): normal muscle (SS(normal)), suggesting a recent or small tear; reduced muscle bulk without fatty atrophy (SS(volume loss)); and those with fatty atrophy, suggesting a large or chronic tear (SS(fatty atrophy)). Subscapularis tendon abnormalities, the subcoracoid interval, and subcortical bone marrow edema in the lesser tuberosity and coracoid process were recorded. RESULTS: The mean size of supraspinatus tendon tears in the SS(normal) (n = 45) group was 8.5 mm, 16.6 mm in SS(volume loss) (n = 53), and 29 mm in the SS(fatty atrophy) group (n = 44). Subscapularis tendon abnormality was identified in 22% of SS(normal) patients, 61% of SS(volume loss), and 86% of the SS(fatty atrophy) group (p < 0.001). There was moderate correlation between chronicity of supraspinatus tendon tears and subscapularis tendon abnormality (r = 0.47; p < 0.0001), with no correlation between the subcoracoid interval and abnormalities of the subscapularis tendon. There was moderate correlation between chronicity of supraspinatus tendon tears and bone marrow changes in the lesser tuberosity (r = 0.44; p < 0.0001). CONCLUSION: Subscapularis tendon abnormality is related to chronicity of supraspinatus tendon tears. Bone marrow edema in the lesser tuberosity with a subscapularis tendon abnormality suggests increased stress at the subscapularis tendon insertion with chronicity of full-thickness supraspinatus tendon tears. Lack of correlation with the subcoracoid interval indicates that anterior instability may be a more important contributing factor to subscapularis tendon abnormalities than static subcoracoid impingement in the setting of a full-thickness supraspinatus tendon tear.

Abnormalities on MRI of the subscapularis tendon in the presence of a full-thickness supraspinatus tendon tear. Publishing Authors By Initials

D Bergin,L Parker,A Zoga,W Morrison,

For similar disorders of environmental origin: wounds and injuries: tendon injuries research abstracts see: disorders of environmental origin: wounds and injuries: tendon injuries research

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Abnormalities on MRI of the subscapularis tendon in the presence of a full-thickness supraspinatus tendon tear. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: AJR. American journal of roentgenology

VOLUME: 186

Page Numbers: 454-9

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ISSN: 0361-803X

DAY: 15

MONTH: Feb

YEAR: 2006

Abnormalities on MRI of the subscapularis tendon in the presence of a full-thickness supraspinatus tendon tear. Information

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LANGUAGE: eng

NlmUniqueID: 7708173

Abnormalities on MRI of the subscapularis tendon in the presence of a full-thickness supraspinatus tendon tear. Keywords Mesh Terms:

KEYWORDS: Tendon Injuries

MESH TERMS: diagnosis

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AFFILIATION: Department of Radiology, Thomas Jefferson University Hospital, 396C Main Building, 111 S 10th St., Philadelphia, PA 19107.

Country: United States

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MEDLINETA: AJR Am J Roentgenol

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