Dorsal Root Ganglion Stimulation Therapy
Dorsal root ganglion (DRG) stimulation therapy is a type of treatment for chronic pain management in specific areas of the lower body, such as the knee, hip, groin or foot. This therapy helps manage pain, particularly for people who have long-lasting pain. DRG is like a relay station for pain signals before they’re carried to the brain via the spinal cord.
How Does DRG Therapy Work?
The DRG stimulation system consists of three parts:
- A small, implanted device that emits electrical pulses
- Thin wires placed in the body to carry pulses to the DRGs
- A handheld remote control for adjusting the stimulation's strength and location
During the procedure, a small electrode is placed near a cluster of nerve cells (Dorsal Root Ganglion) that transmits pain signals. This electrode is connected to a pulse generator implanted under the skin. When activated, the device sends electrical pulses to the DRG, interrupting pain signals before they reach the brain.
What to Expect
- Trial Procedure (5-7 days): First, you’ll have a trial period of around 5 to 7 days to assess the effectiveness of DRG stimulation. Temporary electrodes are placed near the dorsal root ganglion under anesthesia and connected to an external stimulator that delivers electrical impulses. You will receive instructions on limits for physical activity to prevent the leads from dislodging. You will need to keep the trial system dry because it isn’t waterproof.
- Trial Period (one week): During the one-week trial, you’ll track your pain relief and daily activities. Afterward, the temporary electrodes are removed and you’ll discuss your results and decide if a permanent implant is appropriate.
- Implant Procedure: If the trial is successful, you will be scheduled for a permanent DRG stimulator implant. This procedure will be done at an outpatient surgery center or hospital under conscious sedation. Follow-up appointments will monitor progress and adjust settings. The device is reversible and can be turned off or removed if needed.
How long is the recovery?
It may take several weeks to recover after the procedure. You may be asked to limit your movements that involve lifting, bending and twisting.
Contact your doctor if:
- You have pain around the implant that lasts longer than two weeks.
- You have redness around the implant site.
- Your stimulator stops working. Turn off your device immediately.
Is DRG Therapy Right for You?
DRG therapy is worth considering if you've had chronic pain for at least six months, especially if it's isolated to a lower part of your body and if other treatments like medication, surgery or nerve blocks haven't provided much relief.