Is local platelet-rich plasma injection clinically superior to hyaluronic acid for treatment of knee osteoarthritis? A systematic review of randomized controlled trials.

Arthritis Res Ther · 2018 · PMC6008940 · PMID 29921309

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did not reach statistical significanceno p-value reported

Regarding the secondary outcome measures, the rate of response to PRGF-Endoret® was higher than that to HA in all cases, although the difference did not reach statistical significance [ 24 ].

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