Prospective Study to Determine the Safety and Effectiveness of a Connective Tissue Allograft Active Matrix (AM) vs. Standard of Care in Arthroscopic Rotator Cuff Repair

Inclusion Criteria: * Provision of signed and dated informed consent form * Stated willingness to comply with all study procedures and availability for the duration of the study * 1-2 tendon full thickness reparable rotator cuff tendon tear(s) Reparable tear defined as: a tear of the rotator cuff where it is possible to bring the retracted tendon edge back to the greater tuberosity of the humerus under minimal tension. Full-thickness tear defined as: a tear that involves the majority of supraspinatus and less than half of the infraspinatus under minimal tension, with no subscapularis involvement beyond the upper border * Failed conservative medical management of the rotator cuff tendon tear defined as: 4-6 weeks of formal physical therapy or guided home exercises and activity modification * Have no contraindications or allergies to the treatment administered * Have current imaging studies (plain radiographs and MRI exams) of the shoulder to rule out other etiologic diagnoses * Able and willing to comply with the post-operative physical therapy and study follow-up schedule Exclusion Criteria: * Prior surgery on the index shoulder within 12 months of enrollment, including Latarjet procedures, superior labral treat from anterior to posterior (SLAP), and (failed) primary rotator cuff surgery, * Prior surgery for bone defects requiring bone implantation in the index shoulder, * Steroid injection into the index shoulder within 6 weeks of enrollment. * Subscapularis tear gre…