The accumulation of these data shows that the use of pulsed radiofrequency generates an increasing interest of pain physicians for the management of a variety of pain syndromes. Although the mechanism of action has not been completely elucidated, laboratory reports suggest a genuine neurobiological phenomenon altering the pain signaling, which some have described as neuromodulatory. No side effects related to the pulsed radiofrequency technique were reported to date. Further research in the clinical and biological effects is justified.

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We investigate the potential of a smartphone to measure a patient's change in physical activity before and after a surgical pain relief intervention. We show feasibility for our smartphone system providing physical activity from acceleration, barometer and location data to measure the intervention's outcome. In a single-case study, we monitored a pain patient carrying the smartphone before and after a surgical intervention over 26 days. Results indicate significant changes before and after intervention, particularly in physical activity in the home environment.