I see this in my practice every week: a patient walks in with leg pain or low-back pain that has outlasted physical therapy, two or three rounds of epidurals, and — sometimes — a back surgery that didn’t fix the pain. They’ve been told the next step is more surgery, more opioids, or “learning to live with it.” None of those is the right answer for most people. Spinal cord stimulation is. As a triple board-certified pain medicine specialist — ABA Anesthesiology, ABA Pain Medicine, and ABIPP — I implant spinal cord stimulators in my Hoffman Estates, Illinois practice as a reversible, drug-free option for neuropathic pain in the back, legs, or both. The honest version is this: SCS is not for everyone, but for the right patient it is one of the most durable, well-studied tools in pain medicine.

What a spinal cord stimulator actually does

A spinal cord stimulator is a small, implanted medical device that delivers low-voltage electrical signals to the dorsal columns of the spinal cord. Those signals interrupt the pain messages traveling from your nerves to your brain — and depending on the system, they can replace pain with a gentle tingling, or block the signal silently with no sensation at all. The hardware has two parts: thin leads placed in the epidural space, and a generator (about the size of a thick poker chip) implanted under the skin, usually in the upper buttock or flank. It’s reversible. If it doesn’t work, we remove it. That alone separates SCS from any spine surgery you’ve been offered.

Who is a candidate for spinal cord stimulation?

The patients I see succeed with SCS share a recognizable pattern. The right candidate usually has all of the following:

  • Chronic neuropathic pain (burning, shooting, electric, or stabbing — not pure aching mechanical pain) in the back, one or both legs, or a mix.
  • At least 6 months of pain that has not responded adequately to conservative care.
  • Documented failure of conservative treatment: physical therapy, oral neuropathic medications (gabapentin, pregabalin, duloxetine), and image-guided injections such as transforaminal or interlaminar epidural steroid injections.
  • An identifiable pain generator on imaging or exam — most commonly post-laminectomy syndrome (“failed back surgery syndrome”), radiculopathy that’s outlasted decompression, painful diabetic neuropathy, or complex regional pain syndrome (CRPS).
  • A successful psychological evaluation — this is required by every commercial payer and Medicare before implant, and it’s a real filter, not a formality.
  • No active untreated infection, no uncontrolled bleeding disorder, and reasonable cognitive ability to manage a rechargeable device.

I will be honest with you about who is not a good candidate. If your pain is mostly mechanical — pure axial low back pain with no leg component, severe facet arthropathy without neuropathic features, or pain from an unaddressed structural problem like a high-grade spondylolisthesis — SCS is rarely the right first answer. If you have untreated depression, active substance use disorder, or unresolved secondary-gain issues, the literature is clear that outcomes are worse and we need to address those first. I’d rather not do a procedure than do the wrong one.

What usually fails before I recommend SCS

Most of my SCS patients have already done the work. They’ve tried 6 to 12 weeks of physical therapy. They’ve taken gabapentin or pregabalin and either gotten partial relief or felt foggy and sedated. They’ve had epidural steroid injections — sometimes two or three — that helped for weeks but never months. Some have had a microdiscectomy or a laminectomy that fixed the structural problem but left them with persistent burning leg pain. Some have been on opioids for years and want off. For these patients, the alternatives are limited: more surgery (often with diminishing returns), long-term opioids (with all the cost we now understand), or a stimulator trial. The trial is the gentle on-ramp.

The 7-day trial: the most important step in the entire process

This is the part I want you to read twice. Every patient gets a 7-day external trial before any decision about a permanent implant. This is not a marketing tool. It’s the single most powerful candidacy filter in modern pain medicine.

Here’s how it works. In a 30- to 45-minute outpatient procedure under local anesthesia and light sedation, I place two thin leads through a small needle into the epidural space at the appropriate spinal level (typically T8–T10 for back-and-leg pain, lower for foot pain). The leads exit through the skin and connect to a small external generator you wear on your belt for 7 days. You go home, live your life, sleep, drive, walk, run errands. The device manufacturer’s nurse will program 2 to 4 stimulation patterns, and you’ll keep a pain diary.

After 7 days, we measure two things: pain reduction (we want at least 50%) and functional improvement — are you sleeping better, walking farther, taking less medication, doing things you’d stopped doing? If yes on both, you’re a strong candidate for the permanent implant. If not, we pull the leads in the office (it’s a quick, painless removal) and we move on to a different plan. Roughly 70–80% of my carefully selected patients pass the trial. About 1 in 5 do not — and for those patients, the trial saved them from a procedure that wouldn’t have helped. Full stop.

The four flavors of SCS — and when I choose each

Not all spinal cord stimulators are the same. Over the last decade, the technology has evolved into four meaningfully different waveforms, each with its own evidence base and ideal patient.

1. Traditional (low-frequency, tonic) SCS. The original waveform — typically 40–100 Hz, delivering a perceptible tingling sensation (paresthesia) that overlaps the painful area. Decades of evidence. Best for patients who tolerate paresthesia well and have a clear, focal pain pattern that’s easy to “cover.” I use this less often as a first choice today, but it remains a workhorse for the right anatomy.

2. 10-kHz high-frequency SCS (HF10, Nevro Senza). A paresthesia-free, high-frequency waveform. The SENZA-RCT (Kapural et al., 2016) showed 10-kHz HF10 outperformed traditional low-frequency SCS at both 3 months and 24 months for chronic back and leg pain, with a higher proportion of patients achieving ≥50% pain relief and no tingling sensation [Neurosurgery 2016; PMID 27584814]. HF10 is my frequent first choice for patients whose dominant complaint is axial low back pain plus leg pain — historically the hardest pattern for traditional SCS to cover.

3. BurstDR™ stimulation (Abbott). A patented “burst” waveform that mimics natural firing patterns of thalamic neurons. The SUNBURST randomized crossover trial (Deer et al., 2018) showed BurstDR was non-inferior — and in patient preference, superior — to traditional tonic stimulation, with most patients preferring the burst waveform and most receiving paresthesia-free relief [Neuromodulation 2018; PMID 28961366]. I reach for BurstDR when a patient has had partial success with tonic stimulation but wants to eliminate the tingling, or when the pain has a strong “affective” or central sensitization component.

4. Closed-loop SCS (Saluda Evoke). The newest generation. A closed-loop stimulator measures the actual neural response (the evoked compound action potential, or ECAP) thousands of times per second and automatically adjusts the dose — so the stimulation stays in the therapeutic window whether you’re sitting, standing, or coughing. The EVOKE study reported sustained, durable pain relief out to 36 months [cite needed — Mekhail et al., Lancet Neurology 2020 / 2022 follow-up]. I consider closed-loop for active patients (including my fellow triathletes) whose body position changes constantly, and for patients whose conventional SCS therapy has faded over time.

There is no single “best” stimulator. The right one depends on your pain pattern, your activity level, your imaging, and — increasingly — what your trial actually tells us. I am not loyal to a manufacturer; I am loyal to whichever device gives you a real life back.

What the procedure looks like — trial and permanent implant

Trial day. You arrive at the outpatient surgery center. I review your imaging and your trial goals one more time. You change into a gown, an IV is placed, and we give you a light sedation — you’ll be relaxed and drowsy but able to respond. You lie face down. I numb the skin in the mid-back, then under live fluoroscopic (X-ray) guidance I advance the leads through a 14-gauge needle into the dorsal epidural space and position them at the precise vertebral level your pain pattern requires. The leads are anchored to the skin with sutures and dressings. The whole procedure is typically 30–45 minutes. You go home the same day with detailed instructions, a programmed external generator, and a manufacturer representative’s number on speed dial.

Permanent implant day. If the trial succeeds, we schedule the permanent implant — typically 2 to 4 weeks later, once any inflammation from the trial has settled. For the permanent implant, I coordinate closely with a neurosurgeon partner. Most permanent SCS implants in my practice are performed as a team: I plan the trial and the device selection, and a neurosurgeon partner performs (or co-performs) the permanent lead placement and generator pocket creation. This is intentional. The permanent implant involves a small incision over the spine to anchor the leads to the deep tissues, plus a separate pocket — usually in the upper buttock or flank — for the generator. Team-based implantation lowers complication rates, especially lead migration and pocket-related issues. You’ll meet the surgeon partner in advance. We discuss the case together. We operate together. This is the standard of care I want for my own family members.

The permanent procedure takes 60–90 minutes under monitored anesthesia care or light general anesthesia. You go home the same day.

Recovery and what to expect

The first 24 hours after either procedure are the most restrictive: no bending, lifting, or twisting; no shower over the dressings; sleep on your back or side with a pillow between your knees. Most patients describe the discomfort as a “deep bruise” feeling at the generator site and the lead anchor site, well managed with ice, acetaminophen, and a short course of a mild muscle relaxant if needed.

Week one: light walking only, no driving while taking sedating medications.
Weeks two to six: progressive return to normal activity. No lifting over 10 pounds, no bending or twisting at the waist, no swimming or hot tubs while the incisions are healing. This is the lead-stabilization window — the leads need scar tissue to anchor them in place before you start moving aggressively.
Six weeks onward: clearance for return to most activity. Patients who run, cycle, lift weights, or — in my own world — train for triathlons can usually return to full training around the 8- to 12-week mark, with device programming optimized for their specific activity patterns.

You’ll have device programming visits with the manufacturer’s clinical specialist over the first 3 to 6 months as we fine-tune the settings. After that, most patients see me twice a year for routine check-ins.

Risks — the honest list

I am not going to undersell this. SCS is a real procedure with real risks. The most common (1–5% range): lead migration (the lead shifts slightly and needs reprogramming or, rarely, repositioning), wound infection at the generator pocket, and seroma (fluid collection). Rare but serious (<1%): epidural hematoma, epidural abscess, nerve injury, dural puncture with spinal headache, and device failure requiring revision surgery. Across all causes, roughly 1 in 10 SCS patients require some form of revision over the life of the device — most commonly for lead migration in the first year or battery replacement at 5–10 years for non-rechargeable systems. I follow the international NACC consensus guidelines on bleeding and infection prevention [Deer et al., Neuromodulation 2017; PMID 27986601], which is why we screen meticulously for anticoagulant use, dental work, and any active infection before either procedure.

Alternatives and how I decide

This is the section that matters most. If SCS has been recommended to you, there are several alternatives worth knowing about — and the choice between them is rarely obvious.

SCS vs. DRG stimulation. Dorsal root ganglion (DRG) stimulation is the right answer when your pain is focal — one foot, one knee, the groin, a single post-surgical scar. The ACCURATE trial (Deer et al., 2017) showed DRG stimulation outperformed traditional SCS at both 3 months and 12 months for CRPS and causalgia of the lower extremity [Pain 2017; PMID 28178071]. If your pain is in a single lower-extremity region, particularly below the knee or in the groin, I’ll often recommend DRG before SCS. (Read more about DRG stimulation — and how I distinguish it from SCS — on the procedure page.)

SCS vs. peripheral nerve stimulation (PNS). If your pain is tied to a single peripheral nerve — an injured ilioinguinal nerve after a hernia repair, an occipital nerve causing chronic headaches, a tibial or sural nerve after an ankle injury — peripheral nerve stimulation is often a smaller, more targeted answer than SCS. See my page on peripheral nerve stimulation for how I decide.

SCS vs. more surgery. If you’re being told you need another laminectomy or a fusion to address persistent pain after a prior decompression, that is precisely the population where SCS has its strongest evidence. Multiple randomized trials have shown SCS outperforms repeat back surgery for failed back surgery syndrome. The lifetime cost is lower, the recovery is shorter, and — critically — it’s reversible.

SCS vs. long-term opioids. This is not a fair comparison. SCS is non-pharmacologic. For patients on chronic opioids who want to reduce or stop them, a successful SCS implant often allows substantial dose reduction.

When I wouldn’t choose SCS. Mechanical low back pain alone without a neuropathic component; pain from an unaddressed structural problem (high-grade stenosis, instability, large disc herniation that hasn’t been evaluated); active infection; uncontrolled coagulopathy; severe untreated depression or active substance use; pregnancy. In any of these, we have a different conversation.

Insurance and prior authorization

SCS is covered by Medicare, Medicare Advantage, and every major commercial insurer in Illinois — but coverage is gated by clear documentation. To approve the trial, your insurer will want: documented chronic pain (≥6 months), failure of conservative care including PT and at least one or two appropriate injections, a recent psychological evaluation clearing you for implant, and a peer-to-peer call in some cases. My office handles the prior authorization paperwork end-to-end, including the psych eval referral, the clinical letter, and the peer-to-peer if your insurer requests one. Once the trial succeeds, the permanent implant authorization is typically straightforward because the trial outcome itself is the strongest evidence.

Frequently asked questions

How long does a spinal cord stimulator last?
The leads and the implanted system are designed to last the patient’s lifetime. The battery (generator) lasts 8–12 years for non-rechargeable systems, or 10–20+ years for rechargeable systems. Replacement is a small outpatient procedure — the leads stay in place; only the generator is swapped.

Can I get an MRI with a spinal cord stimulator?
Yes, with most modern systems. Every major manufacturer now offers MRI-conditional devices — meaning you can have full-body MRIs under specific scanner conditions. We confirm your specific device’s MRI compatibility and provide a card to carry.

Will I feel the stimulation?
Depends on the waveform. Traditional tonic SCS produces a tingling (paresthesia) overlapping the painful area. HF10, BurstDR, and closed-loop SCS are designed to be paresthesia-free — you get the pain relief without the tingling.

Can I exercise, run, or train hard with an SCS?
Yes, once you’re fully healed (typically 8–12 weeks). I have triathlete patients who train daily with stimulators in place. The newer closed-loop systems are especially well suited to high-activity patients because they auto-adjust to body position.

What’s the success rate?
Roughly 70–80% of carefully selected patients achieve ≥50% pain reduction at 12 months with modern waveforms. The trial is the key. If you pass the trial, your odds of a durable result at 1–2 years are good.

Is the trial painful?
The trial procedure itself is done under local anesthesia and light sedation — most patients describe it as “uncomfortable for about 5 minutes, then fine.” The 7 days with the external leads are inconvenient (you can’t shower freely, you have to sleep carefully) but not painful.

If you’re considering a spinal cord stimulator

If you’ve been told you need another back surgery, or to “just live with it,” or to stay on long-term opioids — it’s worth a second opinion before you commit. Spinal cord stimulation isn’t right for everyone, but for the right patient it can give back a life. To find out whether you’re a candidate, call my Hoffman Estates, Illinois office at (847) 981-3630 to schedule a consultation. I’ll review your imaging and your history with you, walk you through your options honestly, and — if SCS is the right next step — explain the trial in detail before you commit to anything.