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What Is Dorsal Root Ganglion Stimulation?

Dorsal root ganglion stimulation is an implanted neuromodulation treatment that delivers electrical pulses to selected dorsal root ganglia near the spinal nerves. These structures contain sensory nerve-cell bodies and help transmit pain signals from specific regions of the body. The therapy is designed to provide more targeted coverage than conventional spinal cord stimulation for some focal neuropathic pain conditions. In the United States, the Food and Drug Administration (FDA)-approved indication includes adults with moderate to severe chronic intractable lower-limb pain from complex regional pain syndrome types I or II.

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What Is Dorsal Root Ganglion Stimulation?

Dorsal root ganglion stimulation is an implanted neuromodulation treatment that delivers electrical pulses to selected dorsal root ganglia near the spinal nerves. These structures contain sensory nerve-cell bodies and help transmit pain signals from specific regions of the body. The therapy is designed to provide more targeted coverage than conventional spinal cord stimulation for some focal neuropathic pain conditions. In the United States, the Food and Drug Administration (FDA)-approved indication includes adults with moderate to severe chronic intractable lower-limb pain from complex regional pain syndrome types I or II.

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Why Is Dorsal Root Ganglion Stimulation Performed?

The procedure is considered for selected patients with chronic neuropathic pain that has not improved adequately with medications, rehabilitation, injections, or other appropriate treatments. Strongest evidence and FDA labeling focus on lower-extremity complex regional pain syndrome and causalgia. Before permanent implantation, patients usually undergo a temporary stimulation trial to determine whether meaningful pain relief and functional improvement occur. Psychological readiness, infection risk, bleeding risk, pain location, prior surgery, and the ability to manage an implanted device are also considered.

How Is Dorsal Root Ganglion Stimulation Performed?

During the trial, one or more thin leads are placed through a needle into the epidural space and positioned near the dorsal root ganglia that correspond to the painful area. The leads connect to an external stimulator for several days so the patient can test the therapy during normal activity. If the trial is successful, permanent leads are implanted and connected to a small pulse generator placed under the skin, commonly in the buttock or abdomen. The system is programmed afterward so stimulation targets the painful region while remaining comfortable.

What Is Recovery Like After Dorsal Root Ganglion Stimulation?

After permanent implantation, the incisions and lead-entry sites need time to heal while the device settings are adjusted. Bending, twisting, heavy lifting, and strenuous activity are limited during early recovery to reduce the chance of lead movement. Patients return for programming visits so stimulation can be refined as pain patterns and activity change. Long-term care includes charging the battery when required, device checks, and monitoring for changes in pain relief or hardware function.

What Are the Risks and Complications?

Possible complications include infection, bleeding, pain at the implant site, lead migration, lead fracture, and device malfunction. Dural puncture can cause a spinal headache, and unintended nerve stimulation can produce uncomfortable sensations or weakness. Rare complications include epidural hematoma, neurologic injury, or deep infection requiring removal of the system. Pain relief can also diminish over time, and revision or explantation can be needed when the device no longer provides adequate benefit.

Frequently Asked Questions About Dorsal Root Ganglion Stimulation

Is a trial required before permanent DRG stimulation?

Yes. A temporary trial is commonly performed first so the patient and pain team can assess pain relief, function, and stimulation coverage before permanent implantation.

How is DRG stimulation different from spinal cord stimulation?

DRG stimulation targets specific dorsal root ganglia near individual spinal nerve roots, which can provide more focused coverage for localized pain than broader dorsal-column stimulation.

What conditions are FDA approved for DRG stimulation?

The FDA-approved indication includes adults with moderate to severe chronic intractable lower-limb pain associated with complex regional pain syndrome types I and II.

Can DRG stimulation hardware move after surgery?

Yes. Lead migration is a recognized complication and can change stimulation coverage or reduce pain relief, sometimes requiring reprogramming or revision surgery.

References

Premarket Approval P150004: Axium Neurostimulator System. U.S. Food and Drug Administration. https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfPMA/pma.cfm?id=P150004. Date Accessed September 11, 2026.

Dorsal root ganglion stimulation yielded higher treatment success rate for complex regional pain syndrome and causalgia at 3 and 12 months: a randomized comparative trial. PubMed. https://pubmed.ncbi.nlm.nih.gov/28030470/. Date Accessed September 11, 2026.

Best Practices for Dorsal Root Ganglion Stimulation for Chronic Pain: Guidelines from the American Society of Pain and Neuroscience. PubMed. https://pubmed.ncbi.nlm.nih.gov/36942306/. Date Accessed September 11, 2026.

Relevant Anatomy, Morphology, and Implantation Techniques of the Dorsal Root Ganglia at the Lumbar Levels. PubMed. https://pubmed.ncbi.nlm.nih.gov/28895256/. Date Accessed September 11, 2026.

Noninfectious Complications of Dorsal Root Ganglion Stimulation: A Systematic Review and Meta-Analysis. PubMed. https://pubmed.ncbi.nlm.nih.gov/39601733/. Date Accessed September 11, 2026.