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The Use of Magnetic Resonance Arthrography to Detect Partial-Thickness Rotator Cuff Tears
William B. Stetson, MD; Thomas Phillips, MD; Andrew Deutsch, MD
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The authors did not receive grants or outside funding in support of their research or preparation of this manuscript. They did not receive payments or other benefits or a commitment or agreement to provide such benefits from a commercial entity. No commercial entity paid or directed, or agreed to pay or direct, any benefits to any research fund, foundation, educational institution, or other charitable or nonprofit organization with which the authors are affiliated or associated.

The Journal of Bone and Joint Surgery, Incorporated
J Bone Joint Surg Am, 2005 Dec 01;87(suppl 2):81-88. doi: 10.2106/JBJS.E.00509
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Extract

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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    These activities have been planned and implemented in accordance with the Essential Areas and policies of the Accreditation Council for Continuing Medical Education (ACCME) through the joint sponsorship of the American Academy of Orthopaedic Surgeons and The Journal of Bone and Joint Surgery, Inc. The American Academy of Orthopaedic Surgeons is accredited by the ACCME to provide continuing medical education for physicians.
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