The level 1 evidence for using PRP for knee arthritis symptoms is overwhelming at this point. There are over 30 level 1 studies showing that PRP is better than a steroid injection, hyaluronic acid, and placebo with benefits that last at least out to 1 year! Why insurance companies will pay for steroid injections and hyaluronic acid injections but NOT PRP that works better and comes from your own body and lasts longer is anyone’s guess!
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