Prospective randomized feasibility study comparing manual vs. automatic position-adaptive spinal cord stimulation...

Area of Science:

• Neuromodulation
• Pain Management
• Biomedical Engineering

Background:

• Patients with spinal cord stimulation (SCS) often experience discomfort due to posture changes affecting stimulation.
• Spinal cord movement within the intrathecal space causes over/understimulation, requiring manual adjustments.
• Automatic position-adaptive SCS aims to resolve these issues by accommodating positional changes.

Purpose of the Study:

• To assess position-related variations in SCS stimulation parameters.
• To compare automatic versus manual SCS in chronic pain patients with laminectomy-type leads.

Main Methods:

• A single-center, prospective, randomized feasibility study with 18 patients.
• Two-arm crossover design comparing manual and automatic position-adaptive SCS over 5 months.
• Patients with chronic refractory back/leg pain were enrolled.

Main Results:

• Statistically significant differences in stimulation intensity were observed between supine and other positions for both manual and automatic SCS.
• These variations were noted for therapeutic and threshold stimulation intensities.
• An exception was observed for threshold amplitudes in the prone position with automatic stimulation.

Conclusions:

• Positional changes induce similar variations in stimulation intensity for both manual and automatic SCS.
• Automatic position-adaptive SCS shows potential for managing posture-related stimulation changes.