Hi. I had them in August for the first time. My warning is - the injection will hurt. I was surprised, since I get cortisone on a "regular" basis, but these are much larger and longer needles. I was glad I got them at the end of the day after work, because it would have been a problem working with that much pain at the injection site.
I have rheumatoid arthritis, so it's not considered to be as successful for RA, but I do think it helped. My left knee has been much better, my right knee not as good, but I also have no ACL in my right knee, so that certainly makes a difference!!
Anyway, if you have ostoarthritis, then I think it's great. If you have RA, then it's a gamble. But like my Dr. said - either we try it and it might work, or we don't try it and we KNOW it won't work. I decided to gamble and so far, I think it's better.
FYI - I started on Celebrex at the same time, so that could be helping, too.