Review article (meta-analysis)| Volume 100, ISSUE 2, P336-349.e15, February 2019

Comparative Effectiveness of Injection Therapies in Rotator Cuff Tendinopathy: A Systematic Review, Pairwise and Network Meta-analysis of Randomized Controlled Trials

Published:August 01, 2018DOI:



      To compare the effectiveness of diverse injections in patients with rotator cuff tendinopathy using pairwise and network meta-analysis.

      Data Sources

      PubMed, EMBASE, Scopus, and Cochrane Library were searched for studies published up to September 31, 2017.

      Study Selection

      We included all published or unpublished randomized controlled trials (RCTs) comparing diverse injections including corticosteroid, nonsteroidal anti-inflammatory drugs, hyaluronic acid, botulinum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 Extraction

      The 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 Synthesis

      Standardized 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).


      For 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.


      List of abbreviations:

      BTX (botulinum toxin), CI (confidence interval), HA (hyaluronic acid), NSAID (nonsteroidal anti-inflammatory drug), PRP (platelet-rich plasma), RCT (randomized controlled trial), SMD (standardized mean difference)
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