This systematic review, conducted under the auspices of the Agency for Healthcare Research and Quality's comparative effectiveness
initiative, identified 137 studies providing evidence about operative and nonoperative therapies for rotator cuff injury.
Evidence suggests that patients with rotator cuff tears experience improvements in function after undergoing any of several
operative procedures or nonoperative therapy, but the amount and strength of available evidence was low for many therapies.
Furthermore, sparse comparative data preclude identification of a superior treatment approach.