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Review
. 2019 Mar 14;7(3):2325967119831052.
doi: 10.1177/2325967119831052. eCollection 2019 Mar.

Treatment of Lateral Epicondylitis With Autologous Blood, Platelet-Rich Plasma, or Corticosteroid Injections: A Systematic Review of Overlapping Meta-analyses

Darby A Houck  1 , Matthew J Kraeutler  2 , Loree B Thornton  1 , Eric C McCarty  1 , Jonathan T Bravman  1
Affiliations
Review

Treatment of Lateral Epicondylitis With Autologous Blood, Platelet-Rich Plasma, or Corticosteroid Injections: A Systematic Review of Overlapping Meta-analyses

Darby A Houck et al. Orthop J Sports Med. .

Abstract

Background: Previous meta-analyses have been conducted to compare outcomes of various treatment injections for lateral epicondylitis (LE), including corticosteroid injection (CSI) and autologous blood products such as autologous blood (AB) and platelet-rich plasma (PRP).

Purpose: To conduct a systematic review of overlapping meta-analyses comparing different injection treatments (CSI, AB, PRP) for LE to determine which meta-analyses provide the best available evidence.

Study design: Systematic review; Level of evidence, 2.

Methods: A systematic review was performed by searching PubMed, Embase, and the Cochrane Library to locate meta-analyses that compared clinical outcomes of CSI, AB, and PRP for the treatment of LE. Search terms included "injection," "corticosteroid," "platelet-rich plasma," "autologous blood," "tennis elbow," "lateral epicondylitis," and "meta-analysis." Results were reviewed to determine study eligibility. Patient outcomes were extracted from these meta-analyses. Meta-analysis quality was assessed with the Oxman-Guyatt and Quality of Reporting of Meta-analyses (QUOROM) systems. The Jadad decision algorithm was then used to determine which meta-analyses provided the best level of evidence.

Results: Nine meta-analyses (two level 1 studies, seven level 2 studies) containing 8656 patients met the eligibility criteria. Seven meta-analyses found that autologous blood products such as AB and PRP significantly improved pain and elbow function in the intermediate term (12-26 weeks), while 4 studies found that CSI effectively relieved pain and improved elbow function in the short term (<12 weeks). The study by Arirachakaran et al in 2016 received the highest QUOROM and Oxman-Guyatt scores; therefore, this meta-analysis appears to have the highest level of evidence. In addition, this study was rated the highest-quality study in this systematic review according to the Jadad decision algorithm. Lower-quality meta-analyses indicated that dosage, number of injections, and differences in therapeutic duration between CSI and autologous blood products may be essential factors in determining the appropriate treatment injection protocol for LE.

Conclusion: The current best available evidence suggests that CSI improves functional outcomes and pain relief in the short term, while AB and PRP are the most effective treatments in the intermediate term.

Keywords: autologous blood; corticosteroid; injection; platelet-rich plasma; tennis elbow.

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Conflict of interest statement

One or more of the authors has declared the following potential conflict of interest or source of funding: E.C.M. has received research support from Mitek, Smith & Nephew, Stryker, and Zimmer Biomet; is a paid consultant for DePuy and Zimmer Biomet; and receives royalties from Elsevier and Zimmer Biomet. J.T.B. has received research support from Stryker; is a paid consultant for DJ Orthopaedics, Encore Medical, Smith & Nephew, and Stryker; has received educational fellowship funding from Mitek; and receives royalties from Shukla Medical. AOSSM checks author disclosures against the Open Payments Database (OPD). AOSSM has not conducted an independent investigation on the OPD and disclaims any liability or responsibility relating thereto.

Figures

Figure 1.
Figure 1.
Flow diagram of Jadad decision algorithm.
See this image and copyright information in PMC

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