Dermal Allograft Augmentation of Large and Massive Rotator Cuff Tears

Inclusion Criteria: * The subject is between the ages of 30 and 75 years. * Subject is planning to undergo arthroscopic surgery for full-thickness rotator cuff tear (RCT) * Two complete RCTs or tear size equal to or greater than 3 cm in either the anterior-posterior or medial-lateral dimension * Primary rotator cuff repair * Stage II fatty infiltration or higher of the supraspinatus or infraspinatus muscle based on preoperative MRI6. Subject has a dual x-ray absorptiometry (DXA) or anterior posterior x-ray view of the target shoulder Exclusion Criteria: * The Subject is unable or unwilling to sign the patient informed consent, approved by the Institutional Review Board. * The subject objects to the use of allograft * Stage I or lower fatty infiltration of the supraspinatus AND infraspinatus muscle * Complete full-thickness subscapularis tears of greater than the superior one third of the tendon (Lafosse grade 3 and above) * Less than 2 mm joint space of the glenohumeral joint on either an anteroposterior or axillary radiograph * Recurrent shoulder instability * Corticosteroid injection in the operative shoulder within one month of surgery * Revision rotator cuff repair * Subject preoperative MRI obtained more than 12 months prior to surgery * Pregnant or planning to become pregnant during the study period * Workman's compensation case * Subject has conditions or circumstances that would interfere with study requirements. Intraoperative exclusion criteria: Partial rotator cuff repairs Lafosse grade 3 or higher subscapularis tears