Article
  Comparison of Anterior and Posterior Corticosteroid Injections for Pain Relief and Functional Improvement in Shoulder Impingement Syndrome
- Author:
 - Arun Ramappa, MD
 - Kempland C. Walley, BSc
 - Lindsay M. Herder, BA
 - Sravisht Iyer, MD
 - David Zurakowski, PhD
 - Amber Hall, MPH
 - Joseph P. DeAngelis, MD
 
Subacromial impingement syndrome (SIS) is the most common cause of shoulder pain....