Radiofrequency ablation for pain relief is a process for reducing inflammation of the facet joints of the spine and alleviating pain at the neck and back by using the heat from high-frequency radio waves on the nerves to interrupt pain signals in the spine before travelling to the brain.Radiofrequency ablation for pain relief is a process for reducing inflammation of the facet joints of the spine and alleviating pain at the neck and back by using the heat from high-frequency radio waves on the nerves to interrupt pain signals in the spine before travelling to the brain.