An implantable device that uses gentle electrical pulses to interrupt chronic pain signals before they reach the brain, offering lasting relief when other treatments have not been enough.
A Spinal Cord Stimulator (SCS) is a medical device used to treat chronic pain, especially when other pain management options, such as medications or surgery, have not provided sufficient relief. It works by delivering low-voltage electrical impulses to the spinal cord through a small implanted device, which helps modify pain signals before they reach the brain, providing relief from pain. The spinal cord stimulator is particularly effective for neuropathic pain, which is pain caused by nerve damage. It is most commonly used for back pain, leg pain, and pain related to conditions such as failed back surgery syndrome (FBSS), complex regional pain syndrome (CRPS), ischemic limb pain, and other chronic pain conditions.
Living with chronic pain that has not responded to medications, injections, physical therapy, or even surgery can feel exhausting and hopeless. A spinal cord stimulator offers a different approach. Rather than trying to fix the structural problem or mask the pain with medication, SCS works by changing how your nervous system communicates pain. The device sends mild electrical pulses to the spinal cord that interfere with the pain signals traveling to the brain. Your brain receives fewer pain messages, which means you feel less pain.
The technology behind spinal cord stimulation has advanced significantly in recent years. Modern SCS systems offer multiple waveforms and programming options that can be customized to your specific pain pattern. Some newer systems deliver stimulation you can feel (a mild tingling sensation), while others use high-frequency or burst stimulation that provides pain relief without any noticeable sensation at all. Your doctor will work with you to find the settings that give you the best relief.
One of the most important features of spinal cord stimulation is that you get to try it before committing to a permanent implant. A trial period allows you to experience the therapy for several days to a week before making a final decision.
Spinal cord stimulation is typically recommended for patients who have exhausted other treatment options and continue to live with significant chronic pain. You may be a candidate if you have:
Before being considered for SCS, most patients will have tried and not found adequate relief from a combination of conservative treatments including physical therapy, medications, injections, and possibly surgery. A psychological evaluation is also typically part of the screening process to ensure you are a good candidate for an implantable device.
Spinal cord stimulation involves two phases: a trial and, if successful, a permanent implant.
The Trial Phase
The trial is a temporary procedure that lets you test the stimulator before committing to a permanent device. It is performed in an outpatient setting and typically takes about 30 to 60 minutes.
Using fluoroscopy (live X-ray), your doctor will place one or two thin, flexible leads (wires with electrical contacts) into the epidural space of the spine near the area where your pain signals travel. The leads are connected to a small external generator that you wear on a belt or keep in a pocket. No permanent incisions are made during the trial.
You will go home with the trial system and use it for five to seven days during your normal daily activities. During this time, you will evaluate how much pain relief the stimulator provides and how it affects your ability to function. A trial is considered successful if you experience at least 50% pain reduction, though many patients report significantly more.
The Permanent Implant
If the trial is successful, the permanent implant is scheduled. This is a surgical procedure performed under general anesthesia or sedation, typically taking one to two hours.
During the implant, your doctor will place the permanent leads in the same position that worked during the trial. The leads are connected to a small pulse generator (about the size of a thick silver dollar) that is implanted under the skin, usually in the upper buttock or lower abdomen. The generator is the battery that powers the system.
Once implanted, the device is programmed wirelessly using an external remote control. You will be given a handheld programmer that allows you to adjust the stimulation level, turn the device on and off, and switch between programmed settings.
Spinal cord stimulation is one of the more involved interventional pain treatments, and the cost reflects the advanced technology and surgical implantation. The good news is that SCS is covered by most major insurance plans, including Medicare, when specific criteria are met. These criteria typically include documented chronic pain that has not responded to conservative treatments and a successful trial period.
Prior authorization is required. Our team will guide you through the approval process and help you understand your coverage and any out-of-pocket costs.
Recovery differs for the trial and the permanent implant.
After the trial: You can resume light activities the same day. The trial leads are taped to your skin and should be kept dry. Avoid bending, twisting, and heavy lifting during the trial period to keep the leads in position. You will return to the office after five to seven days to have the trial leads removed.
After the permanent implant: Plan for a recovery period of about four to six weeks. For the first two weeks, you should avoid bending, twisting, lifting anything over five pounds, and raising your arms above your head. These restrictions allow the leads to scar into position and reduce the risk of lead migration.
Mild soreness at the incision sites (where the leads enter the spine and where the generator is placed) is normal for the first one to two weeks. Your doctor will provide instructions for wound care and pain management during recovery.
Most patients are able to return to work and resume light daily activities within two to four weeks, depending on the physical demands of their job. Full activity without restrictions is typically allowed around six to eight weeks after the implant.
Spinal cord stimulation has been shown to provide significant, long-term pain relief for appropriately selected patients.
Studies on SCS for failed back surgery syndrome and CRPS have demonstrated that a majority of patients experience 50% or greater pain reduction, with many reporting even more improvement. Beyond pain scores, patients frequently report better sleep, improved mood, increased activity levels, and reduced reliance on pain medications, including opioids.
The device is adjustable and reprogrammable over time, which means your therapy can be fine-tuned as your needs change. If your pain pattern shifts or you want to try a different stimulation setting, your doctor can make adjustments during a routine office visit.
Modern SCS batteries are either rechargeable (lasting up to 10 years or more with regular charging) or non-rechargeable (lasting several years before a simple generator replacement is needed). Your doctor will help you choose the right system based on your stimulation needs and lifestyle preferences.
It is important to understand that SCS does not eliminate pain entirely for most patients. The goal is meaningful reduction in pain that allows you to live a more active and fulfilling life.
Here is what to keep in mind before starting the spinal cord stimulation process:
Trial first: You will always have a trial period before a permanent implant. This is your chance to evaluate the therapy with no long-term commitment.
Psychological screening: Most insurance plans require a psychological evaluation before approving SCS. This is not about whether your pain is "real." It is a standard part of the process to ensure you are emotionally prepared for an implantable device and have realistic expectations.
Medications: Inform your doctor about all medications, especially blood thinners. These will need to be stopped before both the trial and the permanent implant.
MRI compatibility: Many newer SCS systems are MRI-compatible, but some are not. Discuss this with your doctor if you anticipate needing MRI scans in the future.
Activity restrictions: Be prepared for temporary activity restrictions after the permanent implant. Having help at home during the first two weeks is recommended.
Driving: You should not drive while using the trial stimulator. After the permanent implant, you can typically resume driving once you are off narcotic pain medications and feel comfortable.
Airport security: The implant may set off metal detectors. You will receive an identification card to carry with you.
When pain persists or returns after spinal surgery, SCS offers a way to manage that pain without additional operations. It is one of the most well-studied applications of spinal cord stimulation.
CRPS causes severe, widespread pain that can be resistant to other treatments. SCS interrupts the abnormal pain signaling and has helped many CRPS patients regain function and quality of life.
Every patient goes through a trial period before receiving a permanent implant. You wear the temporary system for five to seven days during your normal routine, so you can experience firsthand how much relief it provides before making a long-term decision.
Your pain can change, and your stimulator can change with it. The device is fully reprogrammable, so your doctor can fine-tune the settings at any time to keep up with your evolving needs without any additional procedures.
