The risks and complications are dependent upon the sites that are lesioned. Any time there is an injection through the skin, there is a risk of infection. This is why sterile conditions are used for these blocks. The needles have to go through skin and soft tissues, which will cause soreness. The nerves to be lesioned may be near blood vessels or other nerves which can be potentially damaged.
Great care is taken when placing the radio frequency needles, but sometimes complications occur.
Please discuss your specific concerns with your physician. If you have not responded to local anesthetic blocks, you may not be a candidate for this procedure.