Who may benefit
Because each dorsal root ganglion serves a specific region, DRG stimulation is designed for pain that is concentrated in one area rather than widespread. In the United States, DRG stimulation is FDA-approved to help manage moderate to severe chronic pain of the lower limbs in adults with complex regional pain syndrome (CRPS) types I and II. Your physician may discuss it for focused nerve pain in the foot, knee, or groin when other treatments have not helped enough.
How it compares with spinal cord stimulation
Spinal cord stimulation places leads over the spinal cord to cover broader areas such as the back and legs. DRG stimulation places leads alongside the specific nerve roots that serve the painful area, which can make it useful for hard-to-reach spots. Your provider will help decide which approach, if either, fits your pain pattern.
Step 1: The trial
Thin leads are placed through a needle into the epidural space and guided next to the targeted ganglion using X-ray guidance. They connect to an external stimulator that you wear for several days at home. You and your provider then decide together whether the relief and function improvement are enough to consider a long-term system.
Step 2: The implant
If the trial goes well, the leads are placed again in a separate outpatient procedure and connected to a small generator under the skin. You adjust the therapy with a handheld controller or app.
MRI and other considerations
- MRI: some DRG systems are labeled MR Conditional, meaning MRI scans may be done only when specific conditions are met. Always tell imaging staff that you have a stimulator and bring your device card. Ask your provider about your specific system.
- A psychological evaluation is commonly part of the process before implant, and some insurers require it.
- Stimulation is designed to reduce pain and improve function; it does not cure the underlying condition, and results vary.
Risks
Possible risks include infection, bleeding, lead movement or breakage that may need revision, discomfort at the generator site, spinal headache, unwanted stimulation, and, rarely, nerve injury. Your physician will review these and the alternatives with you.
This page is for general education and is not a substitute for an evaluation by a medical professional. Results vary, and no treatment works for everyone. Your provider will discuss whether this option is appropriate for you, along with its benefits, risks, and alternatives. Insurance coverage varies by plan — please call to verify.