I think it was approved by FDA in 2017. It's a new procedure and very few doctors have been trained to perform the treatment. It is done in the office . I did ask my orthopedic doctor to refer me for the procedure but she preferred I see the surgeon instead so there must be some issues with the procedure. But, if one is in pain and high risk for surgery what other options are available ? A close friend of mine was on medication for her pain and due to the meds she got Chron's and is in worse shape now than ever. I know many will say try pot or cbd oil and I am really considering that!