This is exciting and you may be our KA pioneer. With your background in health care and personal research, I'm sure you've considered the risks & rewards.
Recently saw on the news how they've been using stem cell transplants on old dogs with arthritis and to see them running around like a puppy afterward is impressive. There are several youtube videos on this though I'm up on the technicalities. But pehaps if this is further refined, I'll be able to try this when I'm an old dog. Best wishes