Comparison of Continuous and Burst High Frequency Spinal Cord Stimulation Paradigms

Spinal cord stimulation (SCS) delivered at 10kHz frequency (HF10 Therapy) has demonstrated superiority to traditional SCS for leg and back pain. Intermittent dosing (ID) refers to the cycling of stimulation, in which there is a designated time period of stimulation being active (ON) and inactive (OFF). Previous studies have demonstrated the safe and effective use of intermittent dosing. However, there still remains a paucity of clinical data on the use of intermittent dosing and which doses (i.e. on/off cycle time periods) are most effective. Furthermore, no previous studies have utilized HF10 therapy when evaluating intermittent dosing. Patients with chronic back and/or leg pain who have undergone permanent spinal cord stimulator implantation delivered by the Nevro Omnia Neurostimulation System and who are reporting decreased efficacy of continuous HF10 therapy will be randomized into one of two treatments: 1) Intermittent Dosing therapy at 30 seconds ON, 90 seconds OFF 2)Intermittent Dosing therapy at 30 seconds ON, 360 seconds OFF. After randomization, each consented subject will present to clinic at which time will first be seen by a team of investigators, sub-investigators, and/or study staff. After evaluation and collection of baseline data, a clinical specialist for the Nevro Omnia Neurostimulation system will program the subject's SCS system according to the treatment group to which they have been randomized, under direct physician supervision Patient's will be seen and evaluated prior to randomization, and thereafter at 2, 4 and 6 weeks. At the 6-week time period, patients will be crossed over to the other study arm and thereafter evaluated at 2, 4 and 6 weeks. As our primary endpoint, we hypothesize that ID HF10 therapy will provide non-inferior pain relief as measured by VAS scores when compared to continuous HF10 therapy. Other endpoints include: charging frequency, EQ-5D scores of wellbeing; PROMIS score for physical function, pain interference, sle