Ultrasound-guided subacromial-subdeltoid bursa corticosteroid injections: a study of short-Â and long-term outcomes

The pattern of good short-term, but poorer long-term outcomes from SA-SD bursa injection is in line with previous studies; however, this study provides additional information on the effect of the underlying diagnosis on the potential outcome, specifically the presence or absence of a rotator cuff tendon tear.