The Journal of Bone and Joint Surgery (American). 2005;87:81-88.
doi:10.2106/JBJS.E.00509
© 2005 The Journal of Bone and Joint Surgery, Inc.
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The Use of Magnetic Resonance Arthrography to Detect Partial-Thickness Rotator Cuff Tears

William B. Stetson, MD, Thomas Phillips, MD and Andrew Deutsch, MD

Corresponding author:
William B. Stetson, MD
Department of Orthopaedic Surgery, University of Southern California, 201 South Buena Vista Street, Suite 240, Burbank, CA 91505. E-mail address: wstet96263@aol.com

The first 150 words of the full text of this article appear below.


   Introduction
 
Partial-thickness rotator cuff tears can be caused by trauma or anatomic impingement, or they can be a natural consequence of aging. They may involve either the articular surface, the bursal surface, or both sides of the rotator cuff. They can be asymptomatic or a potential source of shoulder dysfunction. Recent studies have seemed to indicate that partial-thickness cuff tears can progress and do not heal on their own1. The articular side of the rotator cuff is hypovascular (Fig. 1), and the collagen bundles on the articular side are thinner and less uniform (Fig. 2), making articular-sided partial-thickness rotator cuff tears two to three times more common than bursal-sided tears2-8.


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  		Fig. 1 Coronal photomicrograph of the zone of diminished vascularity of the supraspinatus tendon. The arrow points to the critical zone of hypovascularity of the articular side of the tendon.

 

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  		Fig. 2 Coronal photomicrograph of the tendinous insertion . . . [Full Text of this Article]

 

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