Part 9 · Myth 46

Spinal cord stimulators are experimental and dangerous

Busted

From the Clinic

She'd had three spine surgeries and was still in significant pain. Her pain specialist suggested a spinal cord stimulator. She looked it up online. 'It seems very experimental,' she said. 'And putting something near my spinal cord — won't that be dangerous?' She was about to decline a treatment that had decades of evidence and might have transformed her quality of life.

What Patients Say
My pain specialist mentioned a spinal cord stimulator but it sounds experimental and risky. I don't want anything electrical put near my spinal cord — that seems like it could go very wrong.

Where Did This Come From?

Spinal cord stimulation (SCS) has been used clinically since the 1960s — it has more than half a century of clinical development behind it. The word "stimulator" combined with "spinal cord" understandably triggers anxiety in patients. And because it's not a widely publicised treatment in mainstream media the way surgery and medications are, it genuinely sounds unfamiliar, and unfamiliar sounds experimental.

The result: many patients who could benefit from SCS never accept a referral, or decline when offered, based on a fear that doesn't reflect the actual state of the evidence.

What the Science Actually Says

Spinal cord stimulation is a form of neuromodulation — it delivers mild electrical impulses to the epidural space near the spinal cord to modulate pain signals before they reach the brain. It doesn't cut, destroy, or alter spinal anatomy. It changes how pain signals are processed.

The evidence base is substantial. Multiple randomised controlled trials and systematic reviews support SCS for specific indications including: failed back surgery syndrome (pain persisting after spine surgery), complex regional pain syndrome (CRPS), and refractory neuropathic leg pain. For these indications, SCS consistently outperforms continued medical management and repeat surgery in long-term outcomes.

A landmark RCT (Kumar et al., Spine 2007) found SCS superior to reoperation for failed back surgery syndrome at 24 months — and patients in the SCS arm were significantly more satisfied and more likely to recommend their treatment than those who had reoperation. Long-term follow-up studies show benefit maintained at 5–10 years in appropriately selected patients.

The procedure is typically trialled before permanent implantation — a temporary stimulator lead is placed for a week or two, and if pain relief is adequate, a permanent generator is implanted. If it doesn't work, it's removed with no permanent change to spinal anatomy. The reversibility is an important feature.

Risks exist — as with any implantable device — including infection, lead migration, hardware failure, and a small risk of neurological injury. But these are well-characterised, low-frequency risks in established practice. "Experimental" is not an accurate description of SCS in 2024.

The Verdict

Spinal cord stimulation has over 50 years of clinical use and strong RCT evidence for specific chronic pain indications. It is not experimental. Fear of the concept should not prevent appropriate referral consideration.

Take-Home MessageIf your pain specialist is suggesting a spinal cord stimulator, it means conservative treatments and surgical options have been considered — and neuromodulation has been judged likely to offer more than further intervention. Don't dismiss it based on unfamiliarity. Ask for the evidence. Consider the trial period. This is not a last resort born of desperation — it's a well-evidenced treatment for specific situations.

What To Do Instead

Ask your specialist: "Is my condition one of the established indications for SCS, and what does the evidence show for patients like me?"
Understand the trial period — most SCS programmes involve a reversible trial before permanent implantation, reducing the commitment risk
Ask about the specific stimulator technology being recommended — newer closed-loop and burst stimulation systems have better evidence than older tonic systems
Get a second opinion from a centre specialising in neuromodulation if you're uncertain

Yellow Flags — Worth Monitoring

SCS hardware complications — lead migration and hardware failure do occur; if pain relief that was present stops, contact your neuromodulation team
MRI compatibility — older SCS devices are not MRI-compatible; newer systems are. Clarify this before undergoing any MRI post-implantation

Red Flags — Get Checked Immediately

Fever and back pain after SCS implantation — possible epidural infection, which is rare but serious and requires urgent assessment
New neurological symptoms after SCS implantation — device-related neurological issue, needs urgent evaluation

Reference Note

Kumar K et al., "Spinal cord stimulation versus conventional medical management for neuropathic pain: a multicentre randomised controlled trial in patients with failed back surgery syndrome," Pain, 2007;132(1- 2):179-88. North RB et al., "Spinal cord stimulation versus repeated lumbosacral spine surgery for chronic pain," Journal of Neurosurgery: Spine, 2005;2(3):310-6. Dworkin RH et al., "Recommendations for the pharmacological management of neuropathic pain: an overview and literature update," Mayo Clinic Proceedings, 2010;85(3 Suppl):S3-14.

← Back to all myths