Background: Repetitive peripheral magnetic stimulation (rPMS) is a non-invasive neuromodulatory approach used for chronic and acute pain. A novel double-coil configuration allowing angled parallel stimulation has the potential to improve energy delivery to deeper joint structures. Materials and Methods: Data from twenty-five patients with joint-related pain treated using a double-coil rPMS configuration were retrospectively analyzed in a pilot exploratory framework. The primary aim was to assess feasibility and estimate preliminary clinical effects. Outcome measures included pain intensity (VAS), functional disability (PSFS), quality of life (SF-12), and subjective improvement (PGIC), assessed at baseline and after completion of treatment. Results: The double-coil rPMS approach was feasible across all treated joints (knee, shoulder, elbow, hip). Improvements were observed across all outcome measures, with pain decreasing by 65.71%, functional ability improving by 84.46%, and SF-12 physical and mental component scores improving by 52.03% and 27.87%, respectively. Large within-subject effect sizes were observed, and most patients exceeded established minimal clinically important difference thresholds. Conclusions: This retrospective pilot analysis supports the feasibility of an adjustable double-coil rPMS configuration for large joints. The findings indicate a clinically meaningful signal of benefit, but should be interpreted as exploratory and used to inform future prospective, controlled studies.
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