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Date: Jan 23 2012

Sensor-Driven Position-Adaptive Spinal Cord Stimulation for Chronic Pain

Background: Variation in the intensity of neurostimulation due to body position is a practical problem formany patients implanted with spinal cord stimulation (SCS) systems because positional changes may result inoverstimulation or understimulation that leads to frequent need for compensatory manual programmingadjustments.

Objectives: The purpose of this study was to assess the safety and effectiveness of a novel type of SCStherapy designed to automatically adapt stimulation amplitude in response to changes in a patient's position oractivity. The primary objective of the study was to demonstrate that automatic position-adaptive SCS benefitedpatients in terms of pain relief and/or convenience compared with neurostimulation adjusted with conventionalmanual programming. Secondary objectives included assessment of worsened pain relief with automaticadjustment; change in pain score; and the number of manual programming adjustments with position-adaptiveneurostimulation compared with manual programming.

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