Regenexx™ SD Versus Exercise Therapy for Rotator Cuff Tears

Inclusion Criteria: * Physical examination consistent with Rotator Cuff tear * Unremitting pain in the affected shoulder for at least 3 months * Significant functional disability related to pain, lack of strength, or other shoulder symptoms * Positive diagnostic imaging, which may include arthrogram, ultrasound and/or MR, on the affected shoulder indicating a non-retracted supraspinatus tendon tear comprising at least one half the tendon thickness in the anterior-posterior and/or superior-inferior planes * Reasonable movement of the non-treated arm, defined as a shoulder elevation of equal or more than 90°, and able to perform (post-injection) exercises * Is independent, ambulatory, and can comply with all post-operative evaluations and visits Exclusion Criteria: * A massive rotator cuff tear as demonstrated by Grade 3 or less muscle strength on testing internal and external rotation of the affected shoulder * Previous surgery to the affected shoulder * Concomitant tears of biceps tendons * Grade 2 or greater SLAP tear * Type 3 acromion * Significant bone spur in subacromial space * Inflammatory or auto-immune based joint diseases or other upper extremity pathology (e.g., rheumatoid arthritis, systemic lupus erythematosus, psoriatic arthritis, polymyalgia, polymyositis, gout pseudogout) * Quinolone or Statin induced myopathy/ tendinopathy * Kellgren-Lawrence grade 2 or greater glenohumeral osteoarthritis * Adhesive capsulitis (mild or severe) * Symptomatic cervical spine p…