The purpose of this study is to better understand the influence of post-operative rehabilitation on the rate of tendon healing and clinical outcomes following arthroscopic repair of the rotator cuff. There are two schools of thought on what type of therapy program is most beneficial following surgical cuff repair. However there has been little data available to compare them. Therefore, the investigators would like to compare these two standard plans of care so that the investigators may better define the safety and efficacy of early mobilization of the shoulder versus keeping the shoulder immobilized following surgical management.