Musculoskeletal conditions are a leading cause of disability in the United States accounting for more than 130 million patient visits to healthcare providers annually. Rotator cuff tears are one of the most common causes of pain and disability of the upper extremity. Impaired motor control of the shoulder girdle muscles with concomitant instability often exists prior to any surgical procedure. Re-tears and/or attenuation after rotator cuff repairs occur relatively frequently and may compromise the functional result. Loading of the UE during rehabilitation, thus the repair site, following the surgical procedure has been implicated in these complications Conventional shoulder rehabilitation protocols with the human-human interface do not possess the ability to systematically quantify dosing and progression for patients in the subacute stages thus, potentially overloading the repair site. No evidence-based research exists comparing outcomes of specific rehabilitative training protocols in these post-surgical patients. Consensus statements conclude, �a need for clinical trials, and validated outcome measures is essential�.