By question I mean that they are a direct result of the stem cell therapy
I would bet "YES".
My Son underwent stem cell surgery to repair a badly damaged knee (from on the job wear and tear after years of "street ball" on hard asphalt courts). They started rehab immediately after the surgery. It seems that using stem cells is the only way possible to regrow cartilage. These stem cells are not from the recipient's body. They are collected from placenta and cultured in a petri dish in a lab somewhere until ready for use.
Anyway, long story short, he was back on the job and fully functional in about 3 months and now it's his "good knee". That's the good news.
The bad news is that whether or not this type of procedure will work on every patient is a guessing game. The Dr. who performed his surgery advised him that he would either get a lot better in a short period of time or not at all and require knee replacement. The other problem with this surgery is that it is prohibitively expensive. The costs of his operation, therapy and followup treatment was well into 6 figures. As a State law enforcement officer, it didn't cost him a dime but for me and those of us who aren't covered 100%/ no deductible, no copay it would represent a 5 figure out of pocket expense. With that in mind if it were me I'd probably opt for the knee replacement and a sure thing as a result but I'm 25 years older than he is and I don't have to chase anybody.