Hi Chris.  Wondered where you've been lately.  Maybe this post explains that.  I'm pretty sure one would need a medical degree to know what you're talking about.  Anything that involves injections sounds painful.  I have a friend who had turkey fat, no joking, injected into this knee.  He said it was majorly painful, but did the trick to help whatever was the issue.  By the way, my daughter is doing fabulous after her surgery.  Back to doing flips and everything!  Still appreciate what you did.  Hope you bounce back from what's ailing you.