Chan Hong Park1* and Sang Ho Lee2
1Department of Anesthesiology and Pain Medicine, Daegu Wooridul Spine Hospital, South Korea
2Department of Neurosurgery, Wooridul Spine Hospital, Seoul, South Korea
Background: Cervical Discogenic Neck Pain (CDNP) caused by abnormal nerve in growth into annular and the expression of pain nociceptors. To treat discogenic neck pain, Intradiscal Pulsed Radiofrequency (ID-PRF) could be used in management of chronic CDNP. Objective: This study aimed to investigate the efficacy of percutaneous ID-PRF in chronic CNDP. Methods: In this retrospective study, thirty-four patients were included and allocated into two groups according to the duration time of the PRF procedure they underwent (7 min group = 16 vs. 15 min group = 18 patients). The principal outcome measures were pain score, evaluated with the Numeric Rating Scale (NRS), and the Oswestry Disability Index (ODI) at three different time points: Baseline, at 2 weeks after the procedure 2-weeks and at 6-month after. The degree of achievement was determined as a reduction in NRS of ≥ 50% or an ODI reduction of ≥ 40%. Results: At 2 weeks and 6 months after the procedure, retrospectively, NRS was found to be significantly reduced (P<0.05) in both groups, but no significant differences were found between the groups. It was also found that ODI scores is significantly lower in treatment groups when compared to the control, but the difference between the groups were not significant. At the 6 months after procedure, 12 patients (75.0%) and 14 patients (77.8%) were found to have decrease in the NRS by more than 50% among the 7-min group and 15-min group, respectively, while there was no significant difference in the percentage of patients who had decrease in ODI more than 40% between the two groups (P=0.243). Conclusion: ID-PRF was shown to have significant efficacy in management of CDNP regardless of the duration of ID-PRF (7 min vs. 15 min).
Park CH, Lee SH. Effect of Intradiscal Pulsed Radiofrequency Application Duration on the Cervical Discogenic Pain. Clin Case Rep Int. 2021; 5: 1245.