Background and Aims Peripheral Nerve Field Stimulation (PNFS) and Spinal Cord Stimulation (SCS) are treatment options for patients with chronic pain. Combining localized stimulation using PFNS along with SCS may have potential to treat areas of pain not previously covered with SCS alone. To address this question, we undertook an observational, multicenter study of patients using PNFS together with SCS implanted with a device that allows for precise customized programming of therapeutic neurostimulation parameters and settings.
Methods This is a multicenter, observational case-series of patients implanted with a neuromodulation system (Precision, Precision Spectra, Spectra WaveWriter, Boston Scientific) conducted as part of an on-going retrospective chart review evaluation of real-world outcomes for chronic pain (Clinicaltrials.gov: NCT01550575). Patients were diagnosed with chronic pain and treated with PNFS as an ”add on” therapy to SCS. Assessments collected include baseline characteristics (demographics, medical history, pain diagnosis) and pre- and post-implant outcomes (NRS pain score). Institutional Review Board (IRB)-approved waivers of consent were obtained.
Results To date, a total of 10-patients (5 Female, mean age 61 ± 9.5 years) who received both SCS and PNFS for the treatment of their pain were analyzed. At baseline, a mean score of 7.6 ± 1.4 (NRS) was reported which reduced to 2.7 ±1.3 (n = 4.9) at last follow-up (median = 516 days). Data collection and analysis is still ongoing, and updated, new results will be presented.
Conclusions Results of this observational case-series so far demonstrate that patients who use PNFS along-with SCS for treatment of chronic pain can achieve significant and clinical meaningful pain relief.
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