Radiofrequency ablation is not performed under general anesthesia. An important advantage of RF current (over previously used low frequency AC or pulses of DC) is that it does not directly stimulate nerves and can therefore often be used without the need for general anaesthetic. Patients sometime receive IV sedation for pain relief during the procedure.
Here are 5 RFA facts.
1) It has nothing to do with listening to the radio - the current utilized is in the same wavelength as radio signals, however the current is focused into the specific problem area. Radiofrequency machines do not have FM radios attached to them.
2) It can actually hurt more right afterwards than before - Radiofrequency ablation procedures can provide pain relief for up to two years. However one thing commonly seen is pain exacerbation immediately after the procedure. Typically this will resolve over the ensuing weeks with the intended pain relief following. Patients need to be appraised of the potential exacerbation so when it happens they are ready for it and expect it.
3) Pain relief can last for over a year - Pain relief from an rhizotomy can be long lasting upwards of one to two years. The tiny nerve endings that are causing the pain in the facet joints are deadened with the procedure. These will eventually regenerate, and then the procedure may be repeated.
4) A diagnostic injection is necessary prior to proceeding with an RFA - In order to receive insurance approval for the procedure, it is necessary to show that an injection helped over 50% for pain relief. If it works and then wears off, an RF procedure is indicated.
5) It is the most modern treatment available for facet related pain - This is true. Nonsurgically RFA remains the newest, best option available for long term pain relief
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