After months of seeing doctors concerning lower back pain on my right side, and having injections that brought short term relief, I was diagnosed with an SI Joint issue. Doctor wants to operate and install the Medtronic system, but I have decided to pursue PRP procedure first. PRP doctor was very straight forward and said there are very few studies that give any indication on how effective the procedure would be on the SI Joint. I have an issue with my left knee, so trying the injection on both areas seems like the best avenue to pursue. Surgery is the very last option I will now use for any problem. I had my right knee replaced a few years ago, and it has never been the same, and never will be. Great doctor did my surgery, but the replacement knee is never as good as the original. I will post how things go.