Fast-Acting Subperception Spinal Cord Stimulation for Persistent Spinal Pain Syndromes: Real-World Outcomes for up to 3 Years in an “As-Treated” Cohort from a Global Observational Study

Background/Objectives: Evidence on the effectiveness of spinal cord stimulation using fast-acting subperception therapy (FAST-SCS) in patients with persistent spinal pain syndrome (PSPS) remains limited. We evaluated clinical outcomes of FAST-SCS in patients with PSPS types 1 (i.e., non-surgical back pain) and 2 (i.e., failed back surgery syndrome).

Methods

Our global, multicenter, retrospective, observational chart review included all consecutive adults with chronic low back and/or leg pain due to PSPS who received SCS with a multimodal device and reported using FAST-SCS at their latest follow-up. Available data from the patients’ medical files, documented by site personnel per their standard of care, were collected and analyzed. Pain intensity was assessed using the numerical rating scale (NRS); percent pain relief (PPR) was recorded where available. Main outcomes included changes in overall pain (NRS) compared to baseline, proportion of patients with ≥50% reduction in overall pain (NRS), proportion of patients with minimal pain (NRS ≤ 2), and high responder rates (PPR ≥ 80%). Data was analyzed for all PSPS patients at the last follow-up, with preliminary analysis of patients who completed 3-year assessments. Results in PSPS type 1 and 2 patients at the last follow-up are also presented.