DRG stimulation is a targeted form of neuromodulation designed to focus stimulation on specific dorsal root ganglia associated with a focal pain distribution.
The dorsal root ganglion contains sensory nerve-cell bodies near the spinal nerve root. DRG stimulation places leads near selected ganglia to provide focused neuromodulation and can be useful when pain is focal and difficult to cover with broader stimulation patterns.
Candidacy depends on the diagnosis, prior treatment, examination, imaging when appropriate, medical history, and the expected risk-benefit profile.
Selected adults with chronic focal neuropathic pain
Lower-extremity CRPS or causalgia when clinically appropriate
Pain not adequately controlled with appropriate conservative care
Ability to complete a neuromodulation trial and follow-up
Identify the focal pain distribution
Complete required screening and optimization
Temporary DRG stimulation trial
Consider permanent implantation after meaningful trial benefit
Potential risks include infection, bleeding, dural puncture, nerve injury, lead migration or fracture, device malfunction, unwanted stimulation, inadequate relief, and revision or removal.
Results vary, and no procedure can guarantee pain relief or functional improvement.