Stem Cells for Dad

Anyone who has ever met my dad knows what a kind and giving person he is. He does anything for everyone and never expects anything in return. As most of you know, he has been suffering from Osteoarthritis and Rheumatoid Arthritis for several years. These diseases have progressed to a point where he is in constant pain and is unable to do many of the things he loves to do.
After researching many options, I have found one that looks extremely promising. Of course it is not covered by insurance but if this therapy is successful which there is over a 75 percent chance that it will be, it could greatly improve the quality of my dad's life by easing his pain and actually helping his cartilage to regenerate with the help of stem cells.
My parents are extremely generous people and because of the generosity that they have bestowed on me and others, I would like to provide them with the means to pay for this treatment so they can save what is left of their retirement for living expenses.
You all know my dad does not like to ask for help. He is used to being the strong one and doing things for others. We have exhausted all other avenues of treatments and medications and many of them have made things even worse. I just want my dad to have a chance at the quality of life he deserves. Thank you for your consideration.