PRP was miraculous for my long-suffering daughter, both for SI joint and knee. After years of PT (and one surgery years back), relief in 24 hours as I remember. Her joints are loose and PRP tightens things up, I was told.

It works really well for some conditions.

This past week I mentioned it to an orthopedist and boy was he hostile about it! PRP was suggested by a rehab affiliated with a top hospital so for us, despite the fact that insurance thinks it is experimental, if felt mainstream.