One-Year Outcome of Subacromial Corticosteroid Injection Compared With Manual Physical Therapy for the Management of the Unilateral Shoulder Impingement Syndrome: A Pragmatic Randomized Trial

This small single-centre study of patients with shoulder impingement syndrome found that both corticosteroid injections (40mg triamcinolone acetonide) and manual physical therapy were associated with an approximate 50% improvement in Shoulder Pain and Disability Index scores.