I need help in formulating intelligent questions to ask the dr who is providing stem cell therapy for my severely arthritic right knee.  Got the first shot in Sept 2011 and have had one booster shot since.  I am basically in the same amount of pain as when I first consulted the dr.  I've requested some PT before my next appt with the dr, when he will most likely give me a second booster.  Synvisc shots were tried prior to the stem cell therapy, but all I got was a major, very painful reaction.  I'm a 71-year-old female, considerably overweight with controlled Type 2 diabetes, high BP and high cholesterol.  I quit heavy drinking and smoking about 20 years ago.  I take tons of supplements and have never had a major illness or surgery.  Despite the three controlled conditions and the arthritis (both knees now, but the right one is worse), I consider myself in very good mental and physical health.  What questions should I be asking my stem cell dr about my progress and prognosis?  I am terribly disappointed that my condition hasn't improved, especially since the therapy is an out-of-pocket expense.  How can I get the dr to give me honest answers, especially regarding a Plan B if this doesn't work?  I am trying my best to avoid TKR.
Thanks for any help you can provide.