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Pain Management Pain Management Procedures

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A spinal cord stimulator is an implanted device that sends low levels of electricity directly into the spinal cord to relieve pain.

What is a spinal cord stimulator and how does it work?

Spinal cord stimulators consist of thin wires ( the electrodes) and a small, pacemaker-like battery pack ( the generator). The electrodes are placed between the spinal cord and the vertebrae ( the epidural space), and the generator is placed under the skin, usually near the buttocks or abdomen. Spinal cord stimulators allow patients to send the electrical impulses using a remote control when they feel pain. Both the remote control and its antenna are outside the body.

Experts still don't fully understand the mechanisms behind spinal cord stimulation, but they now know that it may target multiple muscle groups directly from the spine and even alter how the brain senses pain.

Traditional spinal cord stimulators replace the sensation of pain with light tingling, called paresthesia. For patients who find these paresthesiae uncomfortable, newer devices offer "sub-perception" stimulation that cannot be felt.

Many of the latest devices are placed by physicians with highly specialized training in interventional pain management under X-ray and/or ultrasound guidance.

What is spinal cord stimulation used for?

Spinal cord stimulation is used most often after nonsurgical pain treatment options have failed to provide sufficient relief. Spinal cord stimulators may be used to treat or manage different types of chronic pain, including:

Back pain, especially back pain that continues even after surgery (failed back surgery syndrome)

Post-surgical pain

Arachnoiditis (painful inflammation of the arachnoid, a thin membrane that covers the brain and spinal cord)

Heart pain (angina) untreatable by other means

Injuries to the spinal cord

Nerve-related pain (such as severe diabetic neuropathy and cancer-related neuropathy from radiation, surgery or chemotherapy)

Peripheral vascular disease

Complex regional pain syndrome

Pain after an amputation

Visceral abdominal pain and perineal pain

Spinal cord stimulation can improve overall quality of life and sleep, and reduce the need for pain medicines. It is typically used along with other pain management treatments, including medications, exercise, physical therapy and relaxation methods.

Who should get a spinal cord stimulator?

As with all treatments, your doctor will want to make sure spinal cord stimulation is right for you ⁠- and that it is likely to provide significant relief from your chronic pain. To make this recommendation, your pain specialist will likely order imaging tests and psychological screening. Some insurance companies require psychological screening to ensure disorders like depression or anxiety aren't worsening your pain.

Each patient is different, but generally, people who benefit the most from spinal cord stimulation are those who:

Have not experienced sufficient pain relief with medications, less-invasive therapies or prior surgeries

Do not have psychiatric disorders that would decrease the effectiveness of the procedure

Spinal Cord Stimulator Types

Spinal cord stimulators come in three main types:

1. Conventional implantable pulse generator (IPG) is a battery-operated spinal code stimulator. A battery is placed in the spine during an operation. When it runs out, the battery must be replaced with another surgery. This device can be a good choice for people with pain in just one body part because it has a lower electrical output.

2. Rechargeable IPG works similarly to the conventional device, with the difference that the battery can be recharged without another surgery. Because the energy source is rechargeable, these stimulators can put out more electricity. This may be a better choice for people with pain in the lower back or in one or both legs, as the electrical signal can reach further.

3. Radiofrequency stimulator uses a battery that's outside the body. This stimulator is rarely used today because of newer designs and better technology. It has rechargeable batteries, and like the rechargeable IPGs, it may be better for people with pain in the lower back and legs because of the device's power.

Your surgeon will explain how to operate the device and adjust the intensity of the electrical signal, which all three types of stimulators support. Different body positions may require different stimulator settings, such as one setting that works better for sitting and another for walking). To help you easily access the most used settings, most devices allow doctors to save two or three preset programs. Some newer devices feature several waveforms for electricity delivery, including high frequency, burst and high-density stimulation.

Spinal Cord Stimulator Surgery

Spinal cord stimulators require two procedures to test and implant the device: the trial and the implantation.

Spinal Cord Stimulator Trial

The first step is a trial period. Your surgeon will implant a temporary device for you to test out. Guided by a specific type of X-ray called fluoroscopy, your surgeon will carefully insert the electrodes in the epidural space of the spine. The location of your pain affects where these electrodes will be placed along the spine. Your surgeon may ask for your feedback during the procedure to best position the electrodes.

This trial procedure typically requires only one incision in your lower back to place the electrodes. The generator/battery will be outside the body, typically on a belt, you'll wear around your waist.

For about a week, you will evaluate how well the device reduces your pain. The trial is considered a success if you experience a 50% or greater reduction in pain level.

If unsuccessful, the wires can easily be removed in the clinic without damage to the spinal cord or nerves. If successful, surgery is scheduled to permanently implant the device.

Spinal Cord Stimulator Implantation

During the permanent implantation procedure, the generator is placed underneath the skin and the trial electrodes are replaced with sterile electrodes. Unlike the trial electrodes, these will be anchored by sutures to minimize movement.

The implantation can take about 1-2 hours and is typically performed as an outpatient procedure.

After the local anesthesia has been administered, your surgeon will make one incision (typically along your lower abdomen or buttocks) to hold the generator and another incision (along your spine) to insert the permanent electrodes. The incisions are about the length of a driver's license. As in the trial procedure, fluoroscopy is used to determine where the electrodes are placed.

Once the electrodes and generator are connected and running, your surgeon will close the incisions.

Your surgeon may provide sedation to keep you comfortable and ask for your feedback during placement of the electrodes.

Spinal Cord Stimulator Surgery at Johns Hopkins

Spinal Cord Stimulator Recovery

Most patients leave the same day as their procedure - once the anesthesia has worn off. For several days after surgery, your incisions may be painful. Try not to stretch, twist or reach, which could pull at the incisions. Dressings will be placed over the incision sites, which can be removed after about 3 days. In most cases, incisions heal within about 2-4 weeks after surgery.

Your doctor will discuss your recovery plan, but generally lighter activity is recommended for about 2 weeks after surgery.

Once your surgeon approves you for regular activity, you can return to work and drive again (with the stimulator turned off). This is typically 1-2 weeks after surgery.

Spinal Cord Stimulator Complications

Complications of spinal cord stimulator surgery are rare, but no procedure is without risk. A small percentage of patients may experience:

Infection, which may occur in the first 2-8 weeks.

Bleeding.

Device migration (i.e., the electrodes move from their original location and the stimulator doesn't block pain as effectively). This often requires a follow-up surgery to put the electrodes back in the proper spot.

Device damage (e.g., a fall or intense physical activity breaks the stimulator).

Dural puncture. The dura mater surrounds the spinal cord. Spinal cord stimulators are inserted in the epidural space, the area just outside the dura mater. If a needle or electrode goes too deep and pierces it, cerebrospinal fluid may leak out. These punctures can cause severe headaches.

Spinal cord trauma. Although extremely rare, spinal cord stimulator insertion can cause nerve injury and paralysis.

Living with a Spinal Cord Stimulator

Generally, the pain relief provided by spinal cord stimulators allows patients to do much more than they could before surgery, but there are certain restrictions to be mindful of.

Can I have X-rays and CT scans with a spinal cord stimulator?

So long as your spinal cord stimulator is powered off, X-rays and CT scans are generally safe. Before undergoing any scan, always let your doctor, nurse or technician know you have a spinal cord stimulator.

Are spinal cord stimulators MRI compatible?

No, MRIs are not always safe for those with spinal cord stimulation devices. Some newer devices are compatible with certain MRI machine models and scan locations, but your doctor will need to evaluate the specifics of your stimulator first. If your device is not MRI compatible, MRIs can cause serious injury.

Communicate with your pain specialist beforehand so that he or she can weigh in on whether a procedure will interfere with or harm your stimulator model.

Will my spinal cord stimulator set off airport security?

Yes, airport security gates will detect your stimulator, but your physician will give you an identification card that may allow you to bypass the machine.

Some people find that airport security gates cause uncomfortable (but harmless) interference with their stimulators. If you cannot avoid passing through the security screener, turn off your device before stepping through.

Can I drive with a spinal cord stimulator?

No, you should power off your stimulator when you're driving or operating heavy machinery, as sudden changes in stimulation levels could cause distraction.

Can I swim with a spinal cord stimulator?

Swimming is fine with a permanent, implanted generator, but you cannot get your temporary stimulator wet. You will need to avoid baths and showers during that short trial period.

Can a spinal cord stimulator be removed?

Yes, a spinal cord stimulator can be removed safely if you are unsatisfied with the level of pain relief it provides or if there is an infection or mechanical problem with your system. Learn more about spinal cord stimulator removal.

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A spinal cord simulators are used after nonsurgical pain treatments offered no relief. These devices send low levels of electricity directly to the spinal cord.

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Can treat different types of pain that are resistant to other methods or in place of major surgery (Cleveland Clinic, 2023)

Reduce pain, use & need of opioids (Healthline, 2022)

Increase mobility, function, and quality of life (Healthline, 2022)

Outpatient procedure with minimal downtime (Johns Hopkins Medicine, n.d.)

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Risk of infection which may require removal of device (Healthline, 2022), (Cleveland Clinic, 2023)

Gradual loss of pain relief (Cleveland Clinic, 2023)

Epidural hematoma (Healthline, 2022)

Injury to the nerves (Johns Hopkins Medicine, n.d.)

Lead migration, breaking, or malfunction (Cleveland Clinic, 2023)

Pulse generator malfunction or failure (Cleveland Clinic, 2023)

Paralysis (Healthline, 2022)

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Spinal Cord Stimulator (SCS): What It Is & Side Effects

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Spinal cord stimulators are devices that deliver a mild electrical current to your spinal cord. This can help reduce the feeling of pain from other conditions.

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Spinal Cord Stimulator: Uses, Benefits, Side Effects, Precautions

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Spinal cord stimulators are implanted devices that help block pain signals from your brain. They’re used to treat many forms of chronic pain.

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My top five strengths—Relator, Empathy, Developer, Activator, and Positivity—equip me with strong interpersonal skills, the ability to motivate others, and a talent for building meaningful relationships. To complement my strengths and build a well-rounded, cohesive team, I select the following members:

Angelica – Analytical
As someone strong in Empathy and Developer, I (try to) bring emotional intelligence and growth orientation. Angelica’s Analytical strength ensures the team bases its decisions on data and evidence, balancing emotional insight with critical thinking.

Sheila – Strategic
My Activator strength focuses on taking action, and Sheila’s Strategic thinking will help ensure that the team’s actions are guided by a well-planned vision. This pairing brings both momentum and direction.

Isaac – Ideation
Isaac will bring creative, out-of-the-box thinking. Combined with my Developer and Positivity strengths, this can foster an innovative and energizing team culture, where new ideas are both welcomed and nurtured.

Randall – Responsibility
Randall provides a dependable foundation, helping ensure accountability and follow-through. This complements our relationship-driven approach (Relator, Empathy) with reliability and structure.

Emily – Empathy
Including another empathetic team member can strengthen my team's emotional intelligence and ability to understand stakeholder needs. Together, we can help create a psychologically safe, compassionate team environment.

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I support the use of spinal cord stimulators as a valuable treatment option for individuals suffering from chronic, intractable pain. For patients who have not responded well to conventional therapies, like medications and surgery, SCS offers a promising alternative that can significantly improve their quality of life. Unlike long-term opioid use, which carries a high risk of dependency and adverse effects, SCS provides a non-pharmacological approach to pain relief (Johns Hopkins Medicine, n.d.).

The procedure is reversible, and its trial phase allows patients to evaluate its effectiveness before committing to permanent implantation. Clinical experience and patient outcomes have shown that SCS can reduce pain levels, enhance physical function, and decrease reliance on pain medications (Healthline, 2022; Johns Hopkins Medicine, n.d.). Furthermore, advancements in technology have made the devices more customizable and minimally invasive, increasing their safety and effectiveness (Cleveland Clinic, 2023).

Considering the risks of unmanaged chronic pain, such as depression, decreased mobility, and poor overall health, SCS stands out as a well-supported, evidence-based intervention that empowers patients to regain control over their lives (Cleveland Clinic, 2023).

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Spinal Cord Stimulation - OpenAnesthesia