So, this would seem to open up possibilities for transplants and/or gene therapy?
My neighbor was a naturopath, I helped him photograph some before/after xrays of a 70 year old woman's knee (before was bone on bone; she regrew her meniscus and bone spurs disappeared)
I did three prolotherapy sessions (they're painful) with him over a few months and I have been pain free for over fifteen years now. I actually started playing rugby after my first session.