• Meng-Ting Lin, Ching-Fang Chiang, Chueh-Hung Wu, Yi-Ting Huang, Yu-Kang Tu, and Tyng-Guey Wang.
• Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan.
• Arch Phys Med Rehabil. 2019 Feb 1; 100 (2): 336-349.e15.

ObjectiveTo compare the effectiveness of diverse injections in patients with rotator cuff tendinopathy using pairwise and network meta-analysis.Data SourcesPubMed, EMBASE, Scopus, and Cochrane Library were searched for studies published up to September 31, 2017.Study SelectionWe included all published or unpublished randomized controlled trials (RCTs) comparing diverse injections including corticosteroid, nonsteroidal anti-inflammatory drugs, hyaluronic acid, botulinum toxin, platelet-rich plasma (PRP), and prolotherapy in patients with rotator cuff tendinopathy. Among the 1495 records screened, 18 studies were included in the meta-analysis.Data ExtractionThe quality of RCTs was assessed with Cochrane Risk of Bias Tool by 2 independent raters. The primary outcome was pain reduction, and the secondary outcome was functional improvement.Data SynthesisStandardized mean difference (SMD) was used for pairwise and network meta-analysis. In pairwise meta-analysis, corticosteroid was more effective only in the short term in both pain reduction and functional improvement. Network meta-analysis indicated that prolotherapy significantly reduced pain compared with placebo in the long term (over 24wk; SMD: 2.63; 95% confidence interval [CI], 1.88-3.38); meanwhile PRP significantly improved shoulder function compared with placebo in the long term (over 24wk; SMD: 0.44; 95% CI, 0.05-0.84).ConclusionsFor patients with rotator cuff tendinopathy, corticosteroid plays a role in the short term (3-6wk) but not in long-term (over 24wk) pain reduction and functional improvement. By contrast, PRP and prolotherapy may yield better outcomes in the long term (over 24wk). On account of heterogeneity, interpreting these results with caution is warranted.Copyright © 2018 American Congress of Rehabilitation Medicine. Published by Elsevier Inc. All rights reserved.

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