Procedure · Neuromodulation · Naples & Fort Myers FL
Spinal Cord Stimulation —
pain relief without more surgery
Spinal cord stimulation (SCS) delivers targeted electrical signals to the dorsal columns of the spinal cord, modulating pain signals before they reach the brain. It is appropriate for chronic back pain without a clear surgical target, failed back surgery syndrome, neuropathy, and patients for whom a major reconstructive procedure carries too much risk. A trial implant allows patients to experience the result before any permanent commitment is made. Percutaneous leads or surgically placed paddle leads — the approach chosen for each patient’s anatomy and goals.
"Spinal cord stimulation occupies a specific and important place in spine care — it is the option for patients whose pain cannot be resolved by structural surgery, or for whom structural surgery carries too much risk to be the right first step. A patient with chronic back pain after multiple fusions, a frail elderly patient with deformity that would require a massive correction, a diabetic patient with intractable neuropathic foot pain that has not responded to medication — these patients deserve an option that does not ask them to undergo a large operation. The trial is the key: they get to experience the result before any permanent decision is made."
Dr. G. Katsevman, MD · Neurosurgeon & Spine SurgeonWho is a candidate
Indications for spinal cord stimulation —
broader than most patients realize
SCS is not only for patients with prior surgery. The range of indications has expanded significantly with modern waveform technology. The common thread is chronic pain that has not responded adequately to conservative management and for which either no clear structural surgical target exists, or the structural surgery required carries risk that outweighs its expected benefit at this time.
Persistent back and leg pain after technically successful lumbar surgery is one of the most common and best-studied indications for SCS. Based on articles retrieved from PubMed, multiple RCTs demonstrate SCS efficacy for this population. At least one-third of spine surgery patients develop persistent spinal pain syndrome — SCS addresses the pain centrally without requiring further structural surgery on an already-operated spine.
10-kHz SCS received FDA approval specifically for painful diabetic neuropathy (PDN) based on the SENZA-PDN trial. 79% of patients achieved ≥50% pain relief versus 5% with conventional medical management. Burning, shooting, or electric foot and leg pain from peripheral neuropathy that has not responded to gabapentin, pregabalin, duloxetine, or other pharmacotherapy is an appropriate SCS indication.
Many patients with chronic back pain have diffuse, multisource pain without a single structural abnormality that a surgeon can address. Multilevel degeneration, diffuse facet arthritis, myofascial pain overlapping with structural changes — no discrete surgical target. SCS modulates the pain signal centrally rather than requiring a structural fix that does not exist.
Some patients have significant spinal deformity or multilevel pathology where the corrective surgery — long-segment fusion, major deformity correction — would require a large operation with substantial risk. For elderly, frail, or medically complex patients where the operation needed to fix the structural problem carries too much risk at this time, SCS can provide meaningful pain relief as a lower-risk bridge or alternative.
Severe osteoporosis (failed hardware risk), COPD, cardiac disease, morbid obesity, advanced age, or prior poor surgical healing — patients who are too high-risk for the structural surgery that their spine pathology might otherwise indicate. SCS is implanted epidurally without bone removal or fusion — a far smaller physiological insult than deformity correction or multilevel fusion.
Complex regional pain syndrome (CRPS), post-surgical neuropathic pain, chronic radiculopathy that has not responded to decompression, and other neuropathic pain states are established SCS indications. The common mechanism: SCS modulates central sensitization and neuroinflammatory pathways that perpetuate chronic neuropathic pain regardless of the original structural cause.
One of the most important clinical uses of SCS is in patients who have a structural spine problem that could theoretically be addressed surgically, but where the surgery required carries risk that is disproportionate to the patient’s overall condition. This is not a compromise — it is correct clinical reasoning. The goal is to help the patient feel better. If a spinal cord stimulator can accomplish that with a fraction of the physiological cost of a major reconstruction, that may be the right answer — for now, or permanently.
Specific situations where SCS is the right first step rather than major surgery:
- Severe osteoporosis — fusion with pedicle screws in severely osteoporotic bone carries high rates of hardware failure and adjacent fracture; SCS does not place instrumentation under axial load
- Frail or elderly patients — major deformity correction or multilevel fusion in a frail 80-year-old carries perioperative risk that may not be justified when an epidural implant could provide meaningful relief
- Significant cardiac, pulmonary, or metabolic comorbidity — patients who cannot safely undergo prolonged general anesthesia or major blood loss surgery
- Prior failed fusion at multiple levels — operating on an already-revised spine with significant scarring multiplies surgical risk; SCS avoids the operative field entirely
- Patient preference for reversibility — a patient who is reluctant to commit to a permanent structural change can trial SCS with full reversibility before any permanent decision is made
The trial is the key
Trial implant before permanent —
the patient decides based on their own experience
The most important feature of spinal cord stimulation as a treatment is that the patient can experience the result before committing to a permanent implant. No other pain treatment offers this. The trial is not a test — it is a clinical experience that gives the patient real data about whether SCS will work for their specific pain pattern before any permanent hardware is placed.
Trial leads are placed percutaneously under fluoroscopic guidance at the
appropriate spinal levels — the procedure itself is minimally invasive
and typically performed under local anesthesia with sedation. The leads
exit the skin and connect to an external pulse generator that the patient
wears during the trial period.
What happens during the trial:
Following a successful trial, the permanent system is implanted. The pulse
generator (IPG) is placed subcutaneously — typically in the upper buttock
or lower abdomen — and the permanent leads are positioned at the same
spinal levels that produced relief during the trial.
Permanent implant characteristics:
Lead selection
Percutaneous leads vs. paddle leads —
a clinical decision based on anatomy and goals
The choice between percutaneous (cylindrical) leads and surgically placed paddle leads is a clinical decision — not a preference. Both can produce effective SCS. The anatomy, the pain pattern, prior surgery history, and the patient’s overall condition all factor into which approach is most appropriate.
Percutaneous leads are placed through a needle using a modified epidural approach under fluoroscopic guidance. No incision into the spine is required — the procedure is done through the skin under local anesthesia with sedation, making it far less invasive than paddle placement. Both trial leads and permanent percutaneous leads are placed this way.
Advantages: Minimally invasive, can be done under local anesthesia, lower procedural risk, reversible, the standard approach for the trial phase. Considerations: Cylindrical leads deliver current in all directions and may require more current to achieve adequate dorsal column coverage; migration is the most common complication.
Local anaesthesia · trial & permanent · low-risk approachPaddle leads are flat, multi-electrode arrays implanted directly onto the dorsal surface of the dura via a small laminotomy under general anesthesia. Because the electrode contacts face directly toward the dorsal columns rather than radiating in all directions, paddle leads can achieve more focused, efficient stimulation of the dorsal columns with less current and less stimulation of lateral structures.
Advantages: Superior dorsal column coverage, lower energy consumption, less migration risk, better coverage for axial (midline back) pain. Based on articles retrieved from PubMed, percutaneously-introduced paddle leads have produced long-term outcomes comparable to surgically-implanted paddles. Considerations: Requires surgical approach (laminotomy), general anesthesia, and a more invasive permanent implant procedure. Chosen when anatomy or prior clinical factors favor surgical placement.
Surgical approach · superior dorsal coverage · selected casesModern stimulation technology
Waveform options —
conventional, burst, and high-frequency
SCS technology has advanced substantially beyond the original tonic (conventional) stimulation that produced paresthesias. Modern systems offer multiple waveforms that affect pain through different mechanisms and produce different patient experiences. The optimal waveform is patient- and pain-pattern-specific.
Continuous low-frequency stimulation (40–100 Hz) that produces a tingling or vibrating paresthesia overlapping the patient’s pain area. The paresthesia essentially “masks” the pain signal. Works via activation of large-diameter A-beta dorsal column fibers that inhibit pain transmission through gate control mechanisms. Decades of clinical evidence. Requires patient to feel the paresthesia — requires programming to overlap coverage with the exact pain area.
Burst stimulation delivers packets of five high-frequency (500 Hz) pulses followed by a quiet period, typically at a carrier frequency of 40 Hz. Sub-perception — most patients feel no paresthesia, yet pain relief is produced. Works via mechanisms distinct from tonic SCS, including supraspinal modulation of the medial pain pathway. Based on articles retrieved from PubMed, one placebo-controlled RCT in JAMA found burst stimulation equivalent to placebo in a specific chronic radicular pain population, highlighting the importance of appropriate patient selection.
10-kHz stimulation delivers high-frequency pulses below the threshold of sensory perception — patients feel no paresthesia and do not need to position-match the sensation to the pain area. FDA-approved specifically for painful diabetic neuropathy based on the SENZA-PDN RCT. 79% of PDN patients achieved ≥50% pain relief. Thought to act via sodium channel block and reduction of spontaneous dorsal horn activity rather than gate control. Also used for low back and leg pain. The absence of paresthesia simplifies programming significantly.
What to expect
From consultation to permanent implant —
the complete pathway
Dr. Katsevman reviews all imaging, prior operative reports, and pain history personally. The consultation establishes the pain pattern, the structural diagnosis, the prior treatment history, and — critically — whether SCS is the right approach or whether a structural surgical option has been missed. SCS is not offered as a default when a structural fix is clearly appropriate and the patient can safely undergo it. It is offered when structural surgery is not the right answer, or not the right first step.
Most insurance plans require a psychological evaluation before SCS trial implant. This is not a gatekeeping exercise — it identifies patients with active psychiatric conditions, opioid misuse, or pain catastrophising that may reduce SCS efficacy or complicate the post-implant course. Pre-trial workup also includes imaging confirmation of the epidural space anatomy at the target levels, medication optimisation, and surgical planning for lead approach and level.
Trial leads are placed under fluoroscopy at the target epidural level through a needle approach. Intraoperative testing confirms paresthesia coverage or target-area response during placement (for tonic SCS) or confirms lead position (for sub-perception waveforms). The patient goes home the same day with the external pulse generator. Pain diary kept throughout the trial. Programming adjusted as needed. At end of trial, leads are removed in clinic — a simple, office-based procedure.
If the trial produces ≥50% pain relief and the patient elects permanent implantation, the permanent procedure places the definitive leads (percutaneous or paddle) and the IPG subcutaneously. Lead type, level, and laterality are informed by the trial results — the permanent system replicates what worked. MRI-conditional systems are selected for patients who require ongoing spinal imaging. Same-day or overnight stay depending on the approach and the patient’s medical complexity.
SCS is not a set-and-forget device. Programming is adjusted at scheduled follow-up visits and as the patient’s pain patterns evolve. The system is fully programmable — waveform, amplitude, frequency, pulse width, and active contacts can all be adjusted. Modern systems include patient-controlled programming apps that allow adjustment within physician-set parameters. Battery life is monitored; rechargeable systems are charged by the patient as needed. The device is fully reversible — explant is always an option.
The clinical evidence
What the data shows —
an honest picture
Based on articles retrieved from PubMed, the SCS evidence base is strongest for two indications: painful diabetic neuropathy (PDN) and failed back surgery syndrome (FBSS). The evidence is more mixed for non-specific chronic back pain, and patient selection remains critical to outcomes across all indications.
An honest note on the evidence: A placebo-controlled RCT published in JAMA (Hara et al. 2022) found that burst SCS was not significantly superior to sham stimulation for chronic radicular pain after lumbar surgery in a 50-patient crossover trial — an important result that highlights the role of patient selection and placebo effect in SCS outcomes. The evidence is strongest for PDN and FBSS with appropriate patient selection. SCS is not a universal pain solution, and the trial implant exists precisely because individual response is variable. Patients who respond well to the trial experience durable, meaningful relief. Patients who do not respond to the trial have not committed to anything permanent.
Common questions
What patients ask
about spinal cord stimulation
Am I a candidate for SCS if I haven’t had spine surgery? +
Yes — prior surgery is not a requirement. While failed back surgery syndrome is the most historically established SCS indication, the procedure is appropriate for any chronic pain condition with a neuropathic component that has not responded to conservative management and for which a structural surgical solution is either absent or not the right next step. Painful diabetic neuropathy, complex regional pain syndrome, chronic non-specific back pain without a discrete surgical target, and high surgical-risk patients with structural disease are all legitimate SCS candidates without prior surgery. The consultation establishes whether your specific pain pattern, diagnosis, and history make you an appropriate candidate.
What is the trial experience actually like? +
The trial leads are placed as a clinic or outpatient procedure under fluoroscopy, typically under local anesthesia with mild sedation. You go home the same day with the external pulse generator — a small device similar in size to a pager or small remote, worn in a belt clip or pocket. You use the device at home during normal daily activities: sleeping, walking, sitting, driving (at appropriate times). Pain levels are recorded daily. Programming is adjusted at follow-up visits or remotely. The wires exit through the skin during the trial and are secured with tape — shower restrictions apply. At the end of the trial (typically 5–14 days), the leads are pulled out in the clinic — a simple, brief, office-based procedure requiring no anesthesia. If the trial worked, you decide whether to proceed to permanent implant. If it did not, you have no permanent hardware and are no worse off than before.
How do I know if my pain is the right type for SCS? +
SCS works best for pain with a neuropathic component — burning, shooting, electric, or radiating pain that has a nerve-mediated character. Axial mechanical pain (pain purely from joint loading, purely positional) tends to respond less well. The pain patterns that respond best include: chronic radiating back and leg pain after surgery, burning or electric foot and leg pain from neuropathy, and mixed axial and neuropathic pain in the context of prior lumbar surgery or diffuse structural disease. The consultation includes a careful characterization of your pain pattern — burning vs. mechanical, constant vs. movement-triggered, distribution — to assess SCS suitability before proceeding to trial.
Can I have an MRI after SCS implant? +
Modern SCS systems are MRI-conditional — meaning MRI can be performed under specific conditions (field strength, body region, SAR limits) as defined in the device labeling. This is a critical consideration for spine patients who are likely to need ongoing MRI surveillance of their spinal pathology. The device selected for implant is specifically chosen based on your anticipated imaging needs. The conditions for safe MRI are documented in writing and provided to the patient and their physicians. Full-body 1.5 Tesla MRI is available with most modern SCS systems under appropriate conditions. Your referring physicians are informed of the specific MRI requirements for your device at the time of implant.
Does insurance cover spinal cord stimulation? +
Yes — SCS trial and permanent implantation are covered by Medicare and most major commercial insurers for appropriate indications, including failed back surgery syndrome, complex regional pain syndrome, and — as of FDA approval — painful diabetic neuropathy with high-frequency (10-kHz) systems. Coverage typically requires documentation of: chronic pain of sufficient duration (usually ≥6 months); failure of conservative management including medications and physical therapy; psychological evaluation clearance; and, for FBSS, prior spine surgery documentation. Prior authorisation is required. The practice manages insurance coordination and documentation for all SCS patients. Coverage for specific indications varies by insurer and plan; requirements are reviewed at the time of consultation.
I was told I need a major spine surgery but am worried about the risk. Is SCS an alternative? +
Possibly — and this is one of the most important consultations to have before committing to a high-risk structural surgery. SCS is not a substitute for structural surgery that is clearly indicated and the patient can safely undergo. But for patients where the surgery needed is large, the risk is high, or the expected benefit is uncertain, SCS can provide meaningful pain relief with a fraction of the physiological cost. A consultation with Dr. Katsevman establishes whether the structural surgery is truly necessary and safely tolerable, whether SCS is an appropriate alternative or bridge, and whether starting with a low-risk trial implant is the right first step before committing to a major reconstruction. Many patients who thought they faced only a high-risk surgery have found that SCS — trialled at low risk — provided the relief they needed without the operation they feared.
Related pages
More information
on related conditions and procedures
"The trial is what makes spinal cord stimulation unique in spine care. No other pain intervention lets the patient experience the result before committing to anything permanent. A patient who has been in pain for five years and is reluctant to undergo another operation can have a trial removed in 20 minutes in clinic if it doesn’t work — and can have a permanent implant if it does. That asymmetry is the point. The risk of trying is very low. The reward if it works is significant."
Gennadiy (Gene) A. Katsevman, MD
Neurosurgeon & Minimally Invasive Spine Surgeon · Naples & Fort Myers FL
★★★★★ Hundreds of five-star reviews — Google, Healthgrades, WebMD
Naples Top Doctor — Neurosurgery 2024, 2025, 2026
SCS trial · Permanent implant · Percutaneous leads · Paddle leads
Conventional · Burst · High-frequency (10-kHz) SCS · MRI-conditional systems
TOPS™ · Disc replacement · Barricaid® · MIS laminectomy · MIS SI joint fusion
Kyphoplasty · SpineJack® · Osteoporosis workup
PRP & BMAC biologics — optional intraoperative enhancements
Robotic navigation · EOS imaging · Intraoperative CT
No residents · No fellows · Every procedure performed personally
Fellowship — Barrow Neurological Institute under Dr. Juan Uribe
30+ peer-reviewed publications
Naples: 6101 Pine Ridge Road #101 · (239) 649-1662
Fort Myers: 8380 Riverwalk Park Blvd #320 · (239) 437-1121
Spinal Cord Stimulation · Trial & Permanent Implant · Naples & Fort Myers FL
If structural surgery isn’t the answer —
or isn’t the right next step — there is another option.
Bring your imaging and prior treatment history. Dr. Katsevman reviews everything personally and determines whether SCS is appropriate for your pain pattern, whether a structural surgical option has been overlooked, or whether the combination of both is the right approach. The trial is the first step — and it is reversible.
6101 Pine Ridge Road #101, Naples, FL 34119
Fort Myers, FL 33919
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