Single-Site vs. Multi-Site Corticosteroid Injection for Frozen Shoulder: A Meta-Analysis .
Single-Site Corticosteroid Injection Is as Effective as Multisite Corticosteroid Injection in the Nonsurgical Treatment of Frozen Shoulder: A Systematic Review With Meta-Analysis of Randomized Controlled Trials
Arthrosc Sports Med Rehabil. 2022 Sep 8;4(5):e1821-e1842.Five randomized controlled trials were included in this meta-analysis comparing single-site and multi-site corticosteroid injections for the treatment of frozen shoulder. Pooled outcomes of interest included pain on a Visual Analog Scale (VAS), range of motion, American Shoulder and Elbow Surgeons (ASES) scores, and complications. Results revealed significantly better pooled range of motion in abduction in the first 3-4 weeks, as well as superior ASES functional scores and range of motion in internal rotation in the multisite group up to 26 weeks follow-up. However, there was significant heterogeneity affecting the results.
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