Methodological Quality Analysis of Systematic Review for the Treatment of Rotator Cuff Disease.

 To evaluate the methodological quality of systematic reviews for the surgical and nonsurgical treatment of individuals with rotator cuff syndrome; to compare, through the (AMSTAR) instrument, the quality of studies found in the Cochrane Library, PubMed (Publisher ), EMBASE andQinsightdatabases.  This is a descriptive and comparative cross-sectional study, in which two independent authors analyzed, through the AMSTAR instrument, the methodological quality of Cochrane and non-Cochrane systematic reviews on the treatment of individuals diagnosed with rotator cuff syndrome.  A total of 76 systematic reviews were evaluated by the AMSTAR instrument.