2017 AAOS Annual Meeting: No Difference in Long-term Development of Rotator Cuff Rupture and Muscle Volumes in Impingement Patients With or Without Decompression: A Randomized MRI Study of 140 Patients

140 patients with grade II shoulder impingement syndrome were randomized to either arthroscopic acromioplasty followed by a structured exercise therapy program or to a structured exercise therapy program alone. Patients underwent an MRI follow-up at 5 years to assess muscle volume change, the incidence of supraspinatus tendon rupture, and grade muscle fatty degeneration. Results demonstrated no significant differences between groups in any MRI outcome measure.