A neurotomy is a procedure that deliberately damages or cuts a small nerve to stop it from transmitting pain signals. In its most common modern form, radiofrequency neurotomy, a doctor inserts a specialized needle near the target nerve and heats the tip to create a controlled lesion that disrupts the nerve’s ability to carry pain. The procedure is used most often for chronic joint pain in the spine and, increasingly, the knees. Because nerves can regrow over time, relief typically lasts several months to over a year rather than being permanent, and the procedure can be repeated when pain returns.
How Neurotomy Differs From Other Nerve Procedures
The terminology around nerve procedures can be confusing, and even the medical literature has not always used these terms consistently. A neurotomy specifically refers to cutting or destroying part of a nerve. Related terms you may encounter include “neurectomy” (surgically removing a segment of nerve), “rhizotomy” (targeting a nerve root closer to the spinal cord), and “ablation” (destroying tissue with heat, cold, or chemicals). In practice, the terms “radiofrequency neurotomy,” “radiofrequency ablation,” and “radiofrequency denervation” are often used interchangeably by clinicians, since they all describe using heat to disable a nerve.1Europe PMC / EFORT Open Reviews. The role of neurectomy in the management of spasticity of the upper limb If your doctor recommends any of these by name, the core idea is the same: a targeted nerve is heated or otherwise disrupted so it stops sending pain signals.
Who Is a Candidate
Radiofrequency neurotomy is not a first-line treatment. It is reserved for people with chronic pain that has not responded to more conservative approaches like physical therapy, medication, and lifestyle changes. The most common candidates are people with facet joint pain in the lower back or neck. Facet joints are the small joints that connect one vertebra to the next, and when they become arthritic or inflamed, they can produce deep, aching pain that worsens with twisting or bending.
Before anyone undergoes neurotomy, they first go through a diagnostic screening process. The doctor performs what is called a medial branch block, which involves injecting a small amount of local anesthetic near the same nerve that would later be targeted by the neurotomy. If the block temporarily eliminates or substantially reduces the pain, that confirms the nerve in question is the one responsible. Most protocols require at least two successful diagnostic blocks before proceeding to neurotomy.2PubMed Central. Cooled-radiofrequency neurotomy for the treatment of chronic lumbar facet (zygapophyseal) joint pain: A retrospective study This double-check matters because a single block can produce a false positive: the anesthetic may spread to nearby structures and temporarily numb pain that is not actually coming from the facet joint.
Research on patient selection consistently shows that outcomes improve when the diagnostic screening is more rigorous. Studies comparing different selection criteria found that patients chosen through dual or even triple diagnostic blocks reported the greatest degree of pain relief after neurotomy, sometimes achieving complete elimination of their index pain.3PubMed. The Effectiveness of Cervical Medial Branch Thermal Radiofrequency Neurotomy Stratified by Selection Criteria: A Systematic Review of the Literature By contrast, patients selected based on physical examination alone or a single block tended to have more variable results. So if your doctor insists on repeating the diagnostic block before scheduling the neurotomy, that caution is actually working in your favor.
One study that audited consecutive patients going through a double-block protocol found that looking at the potential false-negative rate was itself a meaningful question: some patients who failed the first block might still benefit from neurotomy.4Pain Physician. Indications for Repeat Diagnostic Medial Branch Nerve Blocks Following a Failed First Medial Branch Nerve Block The diagnostic process, in other words, is imperfect in both directions. It can miss some people who would benefit and green-light some who will not.
What Happens During the Procedure
Radiofrequency neurotomy is typically performed as an outpatient procedure, meaning you go home the same day. You lie face down on a procedure table, and the area is cleaned and numbed with local anesthetic. Using real-time imaging, usually fluoroscopy (a type of continuous X-ray), the doctor guides a thin insulated needle to the target nerve. The technology for this has been refined over decades; the original kit developed in the early 1970s used a set of spinal needles with a radiofrequency electrode that had an exposed active tip of about 7 millimeters, which would be positioned against the medial branch nerve supplying a facet joint to produce a temperature-controlled lesion.5PubMed Central. A History of the Development of Radiofrequency Neurotomy
Once the needle is in place, the doctor typically runs a brief electrical stimulation to confirm correct positioning. A low-level current should reproduce your familiar pain pattern without causing unexpected muscle twitching or radiating nerve sensations in unintended areas. After confirmation, the electrode tip is heated, usually to somewhere around 80°C, for about 60 to 90 seconds. Animal research has shown that nerve damage begins at moderate temperatures but increases progressively with heat: neurons show clear structural damage when temperatures reach about 67°C, and the changes in specific proteins involved in nerve conduction are most pronounced above 57°C.6PubMed Central. Neuropathologic damage induced by radiofrequency ablation at different temperatures The clinical temperatures used are chosen to reliably disable the nerve while keeping the lesion small enough to avoid damaging surrounding structures.
Several facet joints may be treated in a single session, particularly for lower back pain, where two or three levels are commonly affected. The entire procedure usually takes 30 to 60 minutes depending on how many nerves are targeted.
Conventional, Cooled, and Pulsed Techniques
Not all radiofrequency neurotomies use the same approach. The three main variants differ in how heat is delivered and what kind of lesion they create.
- Conventional (thermal): The electrode tip is heated continuously to a set temperature, typically around 80°C. This creates a well-defined, predictable lesion and is the most studied technique.
- Cooled radiofrequency: Water circulates through the electrode during the procedure, keeping the tip temperature lower while still generating heat in the surrounding tissue. This produces a larger, more spherical lesion, which can be useful when anatomical variation makes precise needle placement more challenging.
- Pulsed radiofrequency: Short bursts of current are delivered at a lower temperature, usually below 42°C. The idea is to modulate nerve function without destroying the nerve outright. Because it is less destructive, it has been proposed as a gentler alternative.
How do these compare in practice? A study directly comparing conventional radiofrequency denervation with pulsed radiofrequency for lumbar facet pain found that both provided meaningful relief, but the conventional approach produced better pain scores, functional improvement, and quality-of-life outcomes at 12 months.7PubMed Central. A comparison of pulsed radiofrequency and radiofrequency denervation for lumbar facet joint pain A separate commentary on the evidence concluded that the two appeared similarly effective for at least six months.8Rheumatology Reports. Pulsed radiofrequency therapy might be not inferior to thermal neurotomy in lumbar facet joint pain: a commentary The takeaway is that pulsed radiofrequency may work well enough in the short term, but conventional thermal neurotomy tends to hold up better over a year. Your doctor’s choice will depend on the specific anatomy, your medical history, and how aggressive they want the treatment to be.
Recovery After Neurotomy
Most people can return to light daily activities within a few days. The procedure site may feel sore, and it is common to experience a temporary flare of pain in the first one to two weeks. This is partly from the needle insertion itself and partly from local tissue inflammation caused by the heat lesion. Ice, over-the-counter pain relievers, and limiting heavy lifting or strenuous exercise for a week or two are the standard recommendations.
A small percentage of patients develop what is called postneurotomy neuritis, a burning or hypersensitive feeling in the treated area that can last several weeks. One study found this occurred in roughly 6 to 7 percent of patients.9Pain Physician. The Impact of Local Steroid Administration on the Incidence of Neuritis following Lumbar Facet Radiofrequency Neurotomy The same study tested whether injecting a steroid at the treatment site could prevent this neuritis and found it made no significant difference. So if your doctor does not offer a steroid injection after the procedure, that is consistent with the evidence. Neuritis, when it occurs, is self-limiting and typically resolves on its own within a few weeks.
Serious complications are rare. Because the targeted nerves are small sensory branches that supply the joints rather than the major nerves that control muscles or sensation in the limbs, the procedure does not carry a meaningful risk of weakness or limb numbness. Some people notice a localized area of numbness or altered sensation near the procedure site, which usually fades as the tissue heals.
How Long Does Relief Last
Relief from radiofrequency neurotomy is not permanent because the treated nerve can regenerate over time. In carefully selected patients, the typical duration of meaningful relief is about 10 to 11 months per procedure. One study of 60 patients reported a mean duration of successful relief of about 10.9 months after the initial neurotomy, with roughly 85 percent of patients achieving at least 50 percent pain reduction lasting three months or more.10PubMed Central. The efficacy of repeated radiofrequency medial branch neurotomy for lumbar facet syndrome A separate study reported very similar numbers: a mean duration of relief of about 10.5 months per procedure, with success in more than 85 percent of cases.11PubMed. Effectiveness of repeated radiofrequency neurotomy for lumbar facet pain
These numbers represent averages. Some people get relief for well over a year; others find pain returning after six or seven months. Factors that seem to influence duration include how precisely the nerve was targeted, how well the patient was selected through diagnostic blocks, and individual variation in nerve regrowth rates. One real-world cohort study using a newer three-tined electrode design found that about half of patients met their success threshold at six to twelve months, with the rate declining somewhat by twelve to eighteen months.12PubMed Central. The effectiveness of lumbar medial branch radiofrequency ablation using a three-tined electrode: A real-world cross-sectional cohort study That same study noted that patients who had undergone repeat procedures and those followed up at shorter intervals tended to have higher success rates, suggesting experience with the procedure and consistent follow-up help optimize outcomes.
Repeat Procedures When Pain Returns
Because the nerve regenerates, many patients eventually need the procedure repeated. This is one of the most common questions people have: can you just keep doing it, and does it keep working? The evidence here is reassuring. In the same study that tracked 60 patients, repeat neurotomies provided successful pain relief in about 91 percent of cases, with a mean duration of roughly 10.2 months, which was statistically indistinguishable from the initial result. A small group went on to a third procedure, and four out of five achieved success again with a mean duration of about 9.8 months.10PubMed Central. The efficacy of repeated radiofrequency medial branch neurotomy for lumbar facet syndrome No permanent neurological complications were observed across any of the repeat procedures.
This pattern makes radiofrequency neurotomy function as a long-term palliative management strategy rather than a cure. You undergo the procedure, get roughly 10 months of substantial relief, and repeat it when the pain comes back.11PubMed. Effectiveness of repeated radiofrequency neurotomy for lumbar facet pain For someone with chronic facet joint pain who has exhausted other conservative options, that cycle can represent a significant improvement in quality of life compared to continuous pain medication or inactivity.
An alternative that has been explored for extending the intervals between procedures is alcohol ablation, which chemically destroys the nerve rather than thermally. One comparison study found that alcohol ablation produced a median effective period of 24 months versus about 10.7 months for thermal radiofrequency, with no significant complications beyond injection site soreness in either group.13PubMed. Comparison of alcohol ablation with repeated thermal radiofrequency ablation in medial branch neurotomy for the treatment of recurrent thoracolumbar facet joint pain However, chemical ablation carries its own risks and is not as widely adopted.
Endoscopic Neurotomy as an Emerging Alternative
A newer approach that is gaining attention is endoscopic neurotomy, where the surgeon uses a tiny camera and instruments inserted through a small incision to directly visualize and cut the target nerve rather than relying on heat delivered through a needle. The theoretical advantage is precision: the surgeon can see the nerve, confirm its identity, and sever it under direct vision, which should reduce the chance of an incomplete lesion.
The early comparative evidence supports this. A systematic review found that endoscopic rhizotomy was associated with greater pain relief and functional improvement than percutaneous radiofrequency ablation at nearly all follow-up intervals through 24 months. The rate of repeat interventions was also lower in the endoscopic groups, and multiple studies showed 50 percent or greater improvement from baseline.14Journal of Orthopaedics. Endoscopic dorsal medial branch nerve rhizotomy: A systematic review A separate meta-analysis comparing the two approaches for lumbar facet pain found no meaningful difference at one month, but at 12 months the endoscopic group had significantly better pain relief.15PubMed. Percutaneous radiofrequency ablation and endoscopic neurotomy for lumbar facet joint syndrome: are they good enough?
For cervicogenic headache, a condition where neck joint problems cause head pain, a real-world comparison found that endoscopic neurotomy provided a median pain-free duration of 33 months compared to 8 months for radiofrequency ablation. Both groups showed significant pain reduction and quality-of-life improvement at three months, but the endoscopic group pulled ahead at 12 months and beyond.16Frontiers in Pain Research. Pain-free survival after endoscopic neurotomy versus radiofrequency ablation of the C2 dorsal root ganglion for cervicogenic headache: a real-world comparison study One trade-off worth noting: essentially all patients in the endoscopic group experienced numbness in the back of the head afterward, compared to about 87 percent in the radiofrequency group. That numbness reflects the more complete nerve disruption, which is also what makes the pain relief last longer.
Endoscopic neurotomy is more invasive than a needle-based procedure and requires a surgeon trained in spinal endoscopy, which limits its availability. As the technique matures and more data accumulate, it may become a preferred option for patients who need longer-lasting relief or who have not responded well to conventional radiofrequency approaches.
Beyond the Spine: Genicular Nerve Neurotomy for Knee Pain
Although spinal facet joints are the most common targets, radiofrequency neurotomy has expanded into other areas of the body. The most prominent non-spinal application is genicular nerve ablation for chronic knee pain from osteoarthritis. The genicular nerves are the small sensory branches that supply the knee joint, and disabling them follows the same logic as medial branch neurotomy in the spine: stop the pain signal without altering the joint itself.17PubMed Central. Genicular Nerve Radiofrequency Ablation for Painful Knee Arthritis: The Why and the How
Genicular nerve ablation has become particularly relevant for people who are not candidates for knee replacement surgery, whether because of age, medical conditions that make surgery risky, or personal preference. It is also used as a bridge strategy for patients who are not yet ready for joint replacement but need better pain control than medications alone can provide. Conventional, cooled, and pulsed radiofrequency techniques have all been applied to the knee, mirroring the same options available for spinal procedures.18Pain Management Case Reports. Effectiveness of Genicular Nerve Cooled Radiofrequency Ablation on Chronic Knee Osteoarthritis Pain The diagnostic process is similar as well: a successful genicular nerve block with local anesthetic is typically required before ablation is offered.
The Impact on Healthcare Use and Daily Life
One practical dimension that often gets overlooked is how radiofrequency neurotomy affects the broader picture of someone’s healthcare burden. A study comparing neurotomy with pain rehabilitation programs for facet joint pain tracked real-world outcomes including medical visits, sick leave, and medication use. In the neurotomy group, the average number of pain-related medical visits per year dropped from about 12 to fewer than 4, while the rehabilitation group saw only a modest decline from about 8 to 7. Sick leave days fell from 128 to 60 per year in the neurotomy group, compared to a drop from 154 to 103 in the rehabilitation group.19Interventional Pain Medicine. Cost-effectiveness of radiofrequency neurotomy to treat zygapophysial joint pain compared with pain rehabilitation programs Medication use stayed roughly flat in both groups, suggesting that the neurotomy’s benefit was specifically in reducing pain-related disability and the need for repeated clinic visits, rather than in changing prescribing patterns.
For someone who has been living with chronic facet joint pain, those numbers translate into real changes: fewer days missed from work, fewer appointments to manage, and more capacity to participate in physical activity that supports long-term spinal health. The procedure does not fix the underlying arthritis or degeneration, but it creates a window of reduced pain during which rehabilitation and strengthening become more feasible.
Opioid Reduction After Neurotomy
A finding that has drawn increasing attention is the effect of neurotomy on opioid use. The real-world cohort study using a three-tined electrode reported a 75 percent opioid cessation rate among patients who were using opioids at baseline.12PubMed Central. The effectiveness of lumbar medial branch radiofrequency ablation using a three-tined electrode: A real-world cross-sectional cohort study That is a striking number in the context of chronic pain management, where reducing opioid dependence is a major clinical goal. While this comes from a single cohort and should not be generalized too broadly, it aligns with the broader rationale for interventional pain procedures: if you can address the source of pain signals directly, patients may not need systemic medications with serious side-effect profiles. For someone weighing whether to try neurotomy, the possibility of reducing or eliminating opioid use can be as motivating as the pain relief itself.