Progression of Fatty Muscle Degeneration in Atraumatic Rotator Cuff Tears

The Journal of Bone and Joint Surgery. American Volume
Jonah Hebert-DaviesJay D Keener

Abstract

The purpose of this prospective study was to examine the progression of fatty muscle degeneration over time in asymptomatic shoulders with degenerative rotator cuff tears. Subjects with an asymptomatic rotator cuff tear in 1 shoulder and pain due to rotator cuff disease in the contralateral shoulder were enrolled in a prospective cohort. Subjects were followed annually with shoulder ultrasonography, which evaluated tear size, location, and fatty muscle degeneration. Tears that were either full-thickness at enrollment or progressed to a full-thickness defect during follow-up were examined. A minimum follow-up of 2 years was necessary for eligibility. One hundred and fifty-six shoulders with full-thickness rotator cuff tears were potentially eligible. Seventy shoulders had measurable fatty muscle degeneration of at least 1 rotator cuff muscle at some time point. Patients with fatty muscle degeneration in the shoulder were older than those without degeneration (mean, 65.8 years [95% confidence interval (CI), 64.0 to 67.6 years] compared with 61.0 years [95% CI, 59.1 to 62.9 years]; p < 0.05), and the median size of the tears at baseline was larger in shoulders with degeneration than in shoulders that did not develop degeneration (...Continue Reading

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Jul 13, 2018·Clinical Orthopaedics and Related Research·Edward G McFarlandJoaquin Sanchez-Sotelo
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May 22, 2021·Journal of Shoulder and Elbow Surgery·Fabrizio BrindisinoTiziano Innocenti

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