Background: Subacromial impingement syndrome is the most frequent cause of shoulder problems which themselves affect 1 in 3 adults. Management commonly includes exercise and corticosteroid injection.

Correspondence to Dr Adam Witten, Department of Orthopedic Surgery, Sports Orthopedic Research Center – Copenhagen (SORC-C), Copenhagen University Hospital Amager-Hvidovre, 2650 Hvidovre, Denmark; ...

Objective: This prospective investigation is designed to determine the prognostic factors associated with the response to conservative therapy of subacromial impingement syndrome. Materials and ...