Lumbar Facet Radiofrequency Denervation
Radiofrequency lesioning refers to delivery of high frequency electrical current in the RF range (500kHz) to patient tissue via an RF electrode to induce a biological effect, such as thermal destruction of nerves that carry painful impulses. As the current is applied at destructive levels, a well-circumscribed heat lesion appears.
The use of high frequency electric current to produce controlled thermocoagulation was first reported in 1974 by Sweet who described radiofrequency (RF) treatment of the Gasserian ganglion for the treatment of trigeminal neuralgia. In 1975 Shealy reported the first use of RF current for spinal pain. He described the lesioning of the medial branch for the management of lumbar facet joint pain. This is now by far the most frequent indication for the use of RF.