The effect of consecutive facet medial branch radiofrequency denervation and dorsal root ganglion pulse radiofrequency therapy on lumbar facet joint pain.

Abstract

The aim of this study was to evaluate the efficacy of consecutive facet medial branch (FMB) radiofrequency denervation (RFD) and dorsal root ganglion pulse radiofrequency (DRG PRF) therapy in patients with chronic lumbar facet joint pain. The study included 27 patients with chronic lumbar pain who had ≥50% pain reduction after FMB block for suspected lumbar facet syndrome and subsequently underwent FMB RFD together with PRF to the adjacent DRG. The patients were retrospectively analyzed in terms of age, gender, pre-procedure symptom duration, history of previous back surgery, FMB RFD and DRG PRF level and side, and numerical rating scale scores immediately before and at 1, 3, and 6 months after the procedure, and subjective pain reduction at 6 months post-treatment. Treatment success was defined as ≥50% subjective pain reduction at 6 months. A total of 19 women and 8 men with a mean age of 57.7±12.4 years were analyzed. Twenty patients (74.1%) had no prior history of low back surgery. The success rate of the procedure in terms of subjective pain reduction at 6 months was 82.5% (n=25). The subjective percentage of pain reduction at post-procedure 6 months was significantly lower in patients with a pre-procedure symptom duration of 12 months or longer compared to those whose pre-procedure symptom duration was <12 months (p=0.04). Our study results show that the analgesic efficiency of DRG PRF added to FMD RFD treatment can be increased in patients with short symptom durations.