Radiofrequency Ablation (RFA): A Complete Patient Guide
“My doctor recommended radiofrequency ablation. What exactly is being treated, when should it start working and will the nerve grow back?”
These are sensible questions. Radiofrequency ablation is not a cure for arthritis, and it is not appropriate for every type of neck, back or joint pain. It is a focused procedure designed to interrupt a carefully identified sensory pain pathway.
Radiofrequency ablation, commonly abbreviated as RFA, uses controlled radiofrequency energy to reduce pain signals traveling through selected sensory nerves.
In spine care, RFA is most commonly used to treat pain arising from the facet joints. Different radiofrequency procedures may also be used for selected pain involving the sacroiliac region, knee, hip, shoulder, vertebral endplates and certain peripheral nerves.
The goal is precise: identify the suspected pain-carrying nerve, position a specialized probe beside it under image guidance and create a controlled treatment zone that reduces the nerve’s ability to transmit pain.
The Quick Answer
- RFA uses controlled energy to interrupt selected sensory nerve signals.
- Facet RFA usually follows diagnostic medial branch blocks.
- The procedure is performed through specialized needles under imaging guidance.
- Local anesthetic is used. Sedation may be considered when medically appropriate.
- Temporary soreness, numbness, burning sensitivity or a pain flare can occur afterward.
- Relief may begin within days but can take three to six weeks to become clear.
- Benefit often lasts for months, although the degree and duration vary.
- The treated nerve may recover over time, allowing the original pain to return.
What Is Radiofrequency Ablation?
Radiofrequency ablation is a minimally invasive procedure that uses controlled electrical energy to generate heat at the tip of a specialized needle or probe.
When the probe is positioned beside an appropriately selected sensory nerve, the heat creates a small, controlled treatment zone. This reduces the nerve’s ability to carry pain signals from a painful joint or structure toward the spinal cord and brain.
RFA treats a pain pathway, not the arthritis itself.
The painful joint remains present. The purpose of RFA is to reduce the pain signal traveling from that joint toward the brain.
Depending on the treatment location and technique, RFA may also be called:
- Radiofrequency neurotomy
- Medial branch neurotomy
- Radiofrequency rhizotomy
- Thermal radiofrequency lesioning
- Cooled radiofrequency ablation
These terms are sometimes used interchangeably, although the equipment, temperature, nerve target and treatment technique may differ.
Learn more about medial branch neurotomy and RFA terminology.
A Simple Way to Understand the Pain Pathway
Sensory nerves carry information from joints and other structures toward the spinal cord and brain. When a painful joint sends repeated signals through a small sensory nerve, the brain interprets those signals as pain.
The facet joint or another structure generates a pain signal.
Selected Sensory Nerve
RFA reduces pain transmission through this carefully selected nerve.
Fewer signals from the treated pathway reach the central nervous system.
RFA does not treat the brain; it interrupts transmission at the selected sensory nerve.
RFA attempts to interrupt this pathway at a carefully selected sensory nerve.
For spinal facet-joint pain, the targets are usually the small medial branch nerves carrying sensory signals from the facet joints.
Because medial branch nerves also contribute to the nerve supply of small stabilizing muscles near the spine, the decision to perform RFA should be based on a careful diagnosis rather than simply treating every arthritic joint visible on an MRI.
How Does RFA Treat Facet-Joint Pain?
Facet joints are small paired joints located along the back of the spine. They help control movement and provide stability.
When these joints become arthritic, inflamed or mechanically stressed, they may produce:
- Axial neck pain
- Pain at the back of the head from upper cervical joints
- Pain between or around the shoulder blades
- Axial lower-back pain
- Pain worsened by standing, extension or twisting
- Referred pain into the buttock, hip region or upper thigh
Facet pain cannot be diagnosed reliably from an MRI alone. Arthritic changes are common, including among people who have little or no spinal pain.
Diagnostic medial branch blocks are therefore used to determine whether temporarily anesthetizing the suspected nerves substantially improves the patient’s familiar pain and normally painful activities.
The Facet RFA Treatment Pathway
The block is the test. RFA is the treatment.
A meaningful response to the diagnostic block helps determine whether the facet-joint nerve pathway is an appropriate treatment target.
Patients are usually asked to monitor:
- How much the familiar pain improves
- How quickly the improvement begins
- How long the improvement lasts
- Whether previously painful movements become easier
- Whether daily function improves during the anesthetic window
Insurance plans may require one or two diagnostic blocks and may specify the percentage of relief that must be documented before RFA is authorized. Coverage criteria are not identical to absolute diagnostic certainty.
Who May Be a Candidate for Facet RFA?
A patient may be considered for cervical, thoracic or lumbar facet RFA when:
- Pain has persisted despite an appropriate trial of conservative treatment
- The symptoms and examination are compatible with facet-mediated pain
- Another diagnosis does not better explain the symptoms
- Diagnostic medial branch blocks produce the required temporary improvement
- The patient is medically able to undergo the procedure
- Applicable authorization and coverage requirements are satisfied
Conventional medial branch RFA does not decompress a pinched spinal nerve. Classic sciatica, progressive weakness, significant spinal stenosis, disc herniation, instability or another structural diagnosis may require a different treatment strategy.
How Is Radiofrequency Ablation Performed?
Radiofrequency ablation is usually performed as an outpatient procedure using fluoroscopic or other appropriate imaging guidance.
- The patient is positioned according to the region being treated.
- The skin is cleaned using sterile technique.
- Local anesthetic is used to numb the skin and deeper tissues.
- Specialized needles or probes are guided beside the selected sensory nerves.
- Stimulation or other procedural testing may be used according to the target and technique.
- Radiofrequency energy is delivered to create the planned treatment zone.
- The probes are removed, small dressings are applied and the patient is monitored before discharge.
The complete visit includes preparation, positioning, procedural verification, treatment, monitoring and discharge instructions.
How Long Does Radiofrequency Ablation Take to Work?
Radiofrequency ablation does not always provide immediate relief. Some patients notice improvement within several days, while others need three to six weeks before the overall result becomes clear.
Temporary improvement immediately after the procedure may come from local anesthetic placed around the treated nerves. That early numbness can wear off before the radiofrequency treatment produces its full clinical effect.
| Time After RFA | What the Patient May Experience | How to Interpret It |
|---|---|---|
| First several hours | Temporary numbness or relief from local anesthetic | Not necessarily the final RFA result |
| First several days | Needle-site soreness, muscle discomfort or return of the baseline pain | Common early recovery findings do not establish failure |
| One to three weeks | Gradual reduction in familiar pain or improved activity tolerance may begin | A common period for meaningful benefit to emerge |
| Three to six weeks | The overall response usually becomes easier to judge | Assess pain, function and activity rather than pain score alone |
| Beyond six weeks | Little change, persistent worsening or a different pain pattern | Clinical reassessment may be appropriate |
This timeline is a general range rather than a promise. The treatment location, number of nerves treated, baseline pain, post-procedure inflammation and presence of other pain generators can affect recovery.
How Should RFA Success Be Measured?
The response should be assessed by more than a single pain score. Useful measures include:
- Improvement in the familiar pain that led to treatment
- Standing, walking, sitting or sleep tolerance
- Ability to perform previously painful movements
- Work, exercise and rehabilitation tolerance
- Change in medication use when clinically appropriate
- Whether untreated pain patterns remain
Partial improvement may still be meaningful when more than one pain generator is present. Conversely, immediate numbness alone should not be mistaken for a durable RFA response.
Is It Normal to Have Worse Pain After Radiofrequency Ablation?
Localized soreness or a temporary increase in the patient’s familiar pain can occur after RFA. Some patients also experience burning, tingling, numbness or skin sensitivity over the treated area. These symptoms may reflect needle-track soreness, muscle irritation or temporary irritation of the treated sensory nerve.
A short-term flare does not necessarily mean the procedure failed. However, severe, progressive or neurologically different symptoms should not be dismissed as routine recovery.
| More Consistent With Short-Term Recovery | Contact the Treating Team or Seek Prompt Evaluation |
|---|---|
| Localized tenderness or bruised sensation | Severe or rapidly escalating pain unlike the usual symptoms |
| Temporary return or increase of familiar pain | New or progressively worsening weakness |
| Mild muscle spasm near the treated area | Persistent or spreading numbness |
| Temporary burning or sunburn-like sensitivity | New bowel or bladder dysfunction or saddle-region numbness |
| Gradual improvement during the following days or weeks | Fever, chills, drainage, increasing redness or marked swelling |
What Is Post-Ablation Neuritis?
Post-ablation neuritis is temporary irritation of a treated sensory nerve. Patients may describe burning, hypersensitivity, numbness, tingling or pain that feels different from the original joint pain.
Symptoms are often self-limited, but the duration varies. Persistent, severe or progressive symptoms should be reported so that infection, neurological injury or another cause is not incorrectly labeled as routine neuritis.
Learn more in the dedicated guide to post-ablation neuritis.
Managing Expected Soreness
Follow the individualized discharge instructions provided by the treating facility. Depending on the procedure and medical history, recommendations may include temporary activity modification, intermittent ice and medication that is safe for the individual patient.
Do not begin or change medication solely because of general online guidance. Contact the treating team when recovery differs substantially from the instructions provided.
What Are the Risks of Cervical Versus Lumbar RFA?
Cervical and lumbar medial branch RFA share the same broad categories of risk, but their anatomy and region-specific effects are not identical. Neither region should be described as risk-free, and cervical RFA should not automatically be labeled more dangerous in every patient. The levels treated, number of nerves, needle position, technique and individual anatomy all matter.
| Risk Consideration | Cervical RFA | Lumbar RFA |
|---|---|---|
| Common short-term effects | Neck soreness, muscle spasm, numbness, burning sensitivity or temporary pain flare | Lower-back soreness, muscle spasm, numbness, burning sensitivity or temporary pain flare |
| Regional anatomy | Targets lie in a smaller region near cervical spinal nerves, vessels and the spinal cord; meticulous imaging and positioning are important | Targets lie near lumbar dorsal rami, spinal nerves and paraspinal muscles; unintended spread or needle position can produce radicular symptoms |
| Upper cervical considerations | Third occipital nerve treatment can produce temporary numbness, dysesthesia or balance-related symptoms in selected patients | Not applicable |
| Muscle effects | Extensive bilateral or multilevel treatment requires particular care because cervical medial branches also contribute to deep neck muscle innervation | Lumbar medial branches contribute to multifidus innervation; temporary soreness or altered muscle activation may occur |
| Rare serious complications | Bleeding, infection, nerve injury, vascular injury, motor deficit or spinal-cord injury | Bleeding, infection, nerve injury, motor deficit or unintended injury to an adjacent spinal nerve |
Thoracic RFA has its own regional considerations.
Because thoracic targets are closer to the lungs, pneumothorax is a rare region-specific complication that does not apply in the same way to routine cervical or lumbar medial branch RFA.
Across all regions, image guidance, appropriate patient selection, careful sensory and motor testing when indicated, sterile technique and disciplined lesion placement help reduce risk. Final risk counseling should reflect the exact levels and technique being proposed.
What Conditions Can Be Treated With Radiofrequency Technology?
Radiofrequency ablation is an umbrella term. Different procedures target different nerves, structures and pain mechanisms. They are not interchangeable.
Spinal Facet-Joint Pain
Conventional thermal RFA may target medial branch nerves in the cervical, thoracic or lumbar spine after an appropriate diagnostic pathway.
Sacroiliac-Region Pain
Selected lateral branch nerves associated with the posterior sacroiliac joint may be treated using conventional, cooled or specialized radiofrequency techniques. The anatomy, diagnostic pathway and coverage rules differ from lumbar facet RFA.
Chronic Knee Pain
Genicular nerve RFA may be considered for selected patients with chronic knee pain, including some patients with osteoarthritis or persistent pain following knee replacement.
Learn about radiofrequency ablation for chronic knee pain.
Chronic Hip Pain
Selected sensory articular branches associated with the hip joint may be treated using radiofrequency techniques in carefully chosen patients.
Chronic Shoulder Pain
Selected sensory branches supplying the shoulder may be evaluated for radiofrequency treatment in carefully chosen patients with persistent shoulder pain.
Vertebrogenic Lower-Back Pain
Basivertebral nerve ablation is performed inside the vertebral body for carefully selected patients with vertebrogenic lower-back pain and qualifying MRI findings.
Learn about the Intracept procedure.
Selected Peripheral Nerve Pain
Thermal or pulsed radiofrequency may be considered for selected peripheral nerve pain syndromes. The choice depends on the nerve’s sensory and motor function, anatomy, diagnosis and the risk of unwanted numbness or weakness.
These procedures are not interchangeable.
Each treatment requires its own diagnosis, target, technique, evidence review and coverage evaluation.
What Is the Difference Between Conventional, Cooled and NIMBUS RFA?
These systems all use radiofrequency energy, but the probes and treatment-zone geometry differ. No device can compensate for an incorrect diagnosis, wrong target or poor procedural technique, and a larger treatment zone does not automatically mean safer, better or longer-lasting relief.
| Technique | Treatment-Zone Concept | Potential Practical Role | Important Limitation |
|---|---|---|---|
| Conventional thermal RFA | A straight electrode creates a controlled thermal lesion whose shape depends on the active tip, temperature, time and probe orientation | Established technique for cervical, thoracic and lumbar medial branch neurotomy | Accurate, appropriately oriented placement remains essential because the treatment zone is limited |
| Cooled RFA | Fluid circulates through the probe during energy delivery, creating a larger and differently shaped lesion around the active tip | Often considered for selected sacroiliac, genicular and other peripheral nerve targets; use for facet targets depends on anatomy and physician judgment | A larger lesion is not inherently superior and must remain appropriately separated from motor nerves and other vulnerable structures |
| NIMBUS RFA | A specialized expandable electrode is designed to create a broad, predictable treatment zone using monopolar or bipolar configurations | May help capture variable nerve anatomy or provide a larger treatment zone at selected spinal or peripheral nerve targets | Device geometry does not prove superior clinical duration for every diagnosis, and placement still requires target-specific expertise |
| Pulsed radiofrequency | Energy is delivered in cycles at lower tissue temperatures than conventional thermal RFA | Selected neural or neuropathic pain targets where neuromodulation is intended | It is not simply a lower-temperature substitute for conventional facet neurotomy; evidence and coverage vary by target |
How Is the Technology Chosen?
The choice should follow the diagnosis and target anatomy. The physician considers the nerve’s expected course, nearby motor or vascular structures, prior surgery, joint geometry, treatment region, available evidence and the procedural objective. Technology is a tool within the treatment plan, not the diagnosis itself.
Learn more about NIMBUS radiofrequency ablation.
What RFA Does Not Do
Radiofrequency ablation can reduce pain transmission from carefully selected nerves, but it is not a universal treatment for spine or joint pain.
Conventional medial branch RFA does not:
- Reverse facet-joint arthritis
- Remove a herniated disc
- Decompress a pinched spinal nerve
- Enlarge a narrowed spinal canal
- Correct spinal instability
- Treat every cause of neck or lower-back pain
- Guarantee permanent pain relief
An abnormal MRI does not automatically identify the source of pain.
Treatment decisions should be based on the patient’s symptoms, examination, diagnostic testing, prior treatment response and imaging rather than the MRI report alone.
How Does RFA Compare With Other Treatments?
Different procedures treat different pain mechanisms. The most appropriate treatment depends on the suspected source of pain rather than pain severity alone.
| Treatment | Primary Purpose | Important Distinction |
|---|---|---|
| Medial branch block | Tests whether one or more facet joints are likely contributing to pain | A temporary diagnostic procedure rather than lasting treatment |
| Facet RFA | Reduces pain transmission through selected medial branch nerves | Does not remove or repair the arthritic facet joint |
| Epidural injection | Reduces inflammation around an irritated spinal nerve root | More commonly used for radiating arm or leg pain than isolated facet pain |
| Facet debulking with neurectomy | Addresses selected hypertrophied facet bone and the associated pain pathway | An advanced option for carefully selected anatomy rather than a routine next step after RFA |
| Endoscopic medial branch neurectomy | Directly identifies and divides the targeted medial branch nerve | An endoscopic procedure with a different burden and recovery profile |
| Spinal fusion | Stabilizes selected painful or unstable spinal segments | More invasive and reserved for different structural indications |
How Long Does Lumbar or Cervical RFA Last?
Relief is variable. In well-selected patients, lumbar or cervical medial branch RFA often provides meaningful benefit for approximately six to twelve months, although some patients have a shorter response, a longer response or no meaningful improvement.
Duration alone does not define success. A clinically useful response should improve the patient’s familiar axial pain, activity tolerance, sleep, work capacity or ability to participate in rehabilitation. Temporary numbness or immediate local-anesthetic relief is not the same as sustained RFA benefit.
What Affects the Duration of Relief?
- How confidently the facet-joint pain pathway was identified before RFA
- Whether the treated nerves and levels matched the patient’s dominant pain
- Probe orientation, lesion geometry and technical nerve coverage
- Cervical, thoracic or lumbar anatomy
- Prior surgery or altered anatomy
- Whether several pain generators are present
- Progression of arthritis, a new injury or another structural change
- Rehabilitation, activity demands and overall health
| Response | Possible Interpretation | Reasonable Next Step |
|---|---|---|
| Meaningful relief for many months | The selected pathway and treatment may have been appropriate | Use the improvement window for activity and rehabilitation; reassess if pain returns |
| Good but brief relief | The pathway may be relevant, but technical coverage, anatomy or another pain generator may limit durability | Reassess before repeating; do not assume that every brief response warrants another RFA |
| No meaningful relief | The diagnosis, block response, nerve coverage or competing pain generators may need review | Reconsider the diagnosis and technical factors rather than automatically repeating the procedure |
| Same pain returns after sustained relief | The treated nerve may have recovered and the original facet pathway may be active again | Clinical reassessment; repeat RFA may be reasonable if the same diagnosis remains likely |
| A different pain pattern appears | A new or additional pain generator may be present | Perform a new evaluation rather than treating the old target by default |
Can the Treated Nerves Grow Back?
The sensory nerve fibers treated during RFA can recover or regenerate over time. That is one reason relief is usually not permanent. Nerve recovery does not guarantee that pain will return, and it does not mean that pain must return on a fixed schedule. The joint may remain less symptomatic, the pain pattern may change or another condition may become more important.
If the same pain returns after a meaningful period of relief, repeat RFA may be considered after reassessment. Under the current Medicare policy commonly applicable in New York, repeat facet RFA at the same site generally requires at least 50% improvement in pain or function for at least six months, and coverage is commonly limited to two RFA sessions per spinal region in a rolling twelve-month period. These are coverage criteria, not a recommendation that every eligible patient should undergo repeat treatment.
What Happens When Pain Returns After RFA?
The treated sensory nerve may recover over time, allowing the original pain pathway to become active again. Returning pain does not automatically mean that the arthritis suddenly worsened or that the first procedure was unsuccessful.
Repeat RFA may be considered when:
- The previous procedure produced meaningful relief for a clinically useful period
- The returning pain resembles the original facet-mediated pain
- No new neurological or structural problem better explains the symptoms
- Repeat treatment remains medically appropriate
- Applicable coverage requirements are satisfied
If the pain pattern has changed, the diagnosis should be reconsidered before automatically repeating the procedure. Updated imaging, examination or another diagnostic pathway may be appropriate.
Learn more about why pain may return after RFA.
Are More Invasive Procedures Always the Next Step?
No. Facet debulking and endoscopic medial branch neurectomy are not automatic stages after RFA. They may be discussed only in carefully selected patients with recurrent confirmed facet-mediated pain, relevant anatomy and a clear reason that another percutaneous treatment is unlikely to be sufficient.
- Learn about facet-joint debulking
- Learn about endoscopic medial branch neurectomy
- Compare medial branch neurectomy and RFA
Frequently Asked Questions About Radiofrequency Ablation
How long does radiofrequency ablation take to work?
Some patients notice improvement within several days, while others need three to six weeks before the overall result becomes clear. Temporary relief immediately after the procedure may come from local anesthetic and should not be mistaken for the final RFA response.
Is it normal to have worse pain after radiofrequency ablation?
Localized soreness, a temporary flare of familiar pain or burning sensitivity can occur after RFA and may last for several days or occasionally longer. Severe or rapidly worsening pain, fever, drainage, new weakness, spreading numbness, bowel or bladder changes or saddle numbness requires prompt medical evaluation.
How long does lumbar or cervical radiofrequency ablation last?
In well-selected patients, lumbar or cervical medial branch RFA often provides meaningful relief for approximately six to twelve months, although some patients have a shorter response, a longer response or no meaningful improvement.
Can the treated nerves grow back after radiofrequency ablation?
The sensory nerve fibers treated during RFA can recover or regenerate over time, which is one reason relief is usually not permanent. Nerve recovery does not guarantee that pain will return or that it will return on a fixed schedule.
What is the difference between conventional, cooled and NIMBUS RFA?
The systems differ mainly in probe design and treatment-zone geometry. Conventional RFA uses a straight thermal electrode, cooled RFA circulates fluid through the probe to create a larger and differently shaped lesion, and NIMBUS uses a specialized expandable electrode designed to create a broad treatment zone. No system is automatically best for every diagnosis or target.
Are the risks of cervical and lumbar radiofrequency ablation the same?
Cervical and lumbar RFA share risks such as soreness, bleeding, infection, neuritis, numbness and rare nerve injury, but their regional anatomy and procedure-specific effects differ. The exact levels, number of nerves, technique and individual anatomy determine the relevant risk profile.
Is radiofrequency ablation surgery?
Percutaneous radiofrequency ablation is generally considered a minimally invasive interventional procedure rather than open surgery. Endoscopic neurectomy and other advanced procedures involve different techniques and recovery considerations.
Will I be awake during radiofrequency ablation?
Local anesthetic is used. Sedation is individualized according to the treatment location, medical history, procedural safety and facility policy.
Can I drive home after radiofrequency ablation?
Patients should not drive after receiving sedation and should follow the transportation instructions provided by the treating facility.
How soon can I return to work after radiofrequency ablation?
Many patients resume light work or routine activity relatively quickly, but timing depends on the treatment location, job demands, post-procedure soreness and whether sedation was used.
Is radiofrequency ablation permanent?
Usually not. The treated sensory nerve may recover over time, allowing the original pain pathway to become active again.
How many times can radiofrequency ablation be performed?
There is no single lifetime number appropriate for every patient. Repeat treatment depends on the response and duration of benefit from prior RFA, whether the same pain has returned, medical appropriateness and insurer requirements.
Does Medicare cover radiofrequency ablation?
Medicare may cover facet RFA when applicable diagnostic, documentation, medical-necessity and frequency requirements are satisfied. Coverage depends on the applicable Medicare Administrative Contractor and current policy.
Can facet radiofrequency ablation treat sciatica?
Conventional medial branch RFA does not decompress a pinched spinal nerve and is not the standard treatment for classic radicular sciatica.
What happens if diagnostic blocks work but radiofrequency ablation does not?
The diagnosis, block response, anatomy, procedural factors and other possible pain generators should be reconsidered. A positive diagnostic block improves patient selection but cannot guarantee a successful RFA result.
Related RFA Treatments and Resources
- Medial Branch Block
- Facet-Joint Syndrome
- Radiofrequency Ablation for Chronic Knee Pain
- Intracept Basivertebral Nerve Ablation
- NIMBUS Radiofrequency Technology
- Post-Ablation Neuritis
- Pain Returned After RFA
- Facet-Joint Debulking
- Endoscopic Medial Branch Neurectomy
- Medial Branch Neurectomy Versus RFA
Dr. Amit Sharma & our minimally invasive pain & spine team.
References
- Cohen SP, et al. Consensus Practice Guidelines on Interventions for Lumbar Facet Joint Pain From a Multispecialty, International Working Group. Regional Anesthesia and Pain Medicine. 2020;45(6):424-467. Read source →
- Hurley RW, et al. Consensus Practice Guidelines on Interventions for Cervical Spine Facet Joint Pain From a Multispecialty International Working Group. Regional Anesthesia and Pain Medicine. 2022;47(1):3-59. Read source →
- Centers for Medicare & Medicaid Services. Local Coverage Determination L35936: Facet Joint Interventions for Pain Management. Read source →
- Centers for Medicare & Medicaid Services. Response to Comments: Facet Joint Interventions for Pain Management. Read source →
- Cleveland Clinic. Radiofrequency Ablation: Procedure, Recovery and Risks. Read source →
- Mayo Clinic Health System. Radiofrequency Ablation for Back Pain. Read source →
- Hospital for Special Surgery. Radiofrequency Ablation for Back and Neck Pain. Read source →
- McCormick ZL, Marshall B, Walker J, McCarthy R, Walega DR. Long-Term Function, Pain and Medication Use Outcomes of Radiofrequency Ablation for Lumbar Facet Syndrome. International Journal of Anesthetics and Anesthesiology. 2015;2:028. Read source →
- McCormick ZL, Choi H, Reddy R, et al. Randomized Prospective Trial of Cooled Versus Traditional Radiofrequency Ablation of the Medial Branch Nerves for the Treatment of Lumbar Facet Joint Pain. Regional Anesthesia and Pain Medicine. 2019;44(3):389-397. Read source →
- Walsh T, Malhotra R, Sharma M, et al. Radiofrequency Techniques for Chronic Pain. British Journal of Anaesthesia Education. 2022. Read source →
- Stratus Medical. NIMBUS Radiofrequency Ablation Product Information. Manufacturer source describing electrode design and lesion geometry; not independent comparative-outcomes evidence. Read source →
About the Author
Amit Sharma, MD is an interventional spine and pain-management physician specializing in image-guided procedures, radiofrequency ablation, endoscopic spine procedures and minimally invasive treatment of chronic spine and joint pain.
Medical disclaimer: This page is educational and does not replace individualized medical evaluation, diagnosis or treatment. Radiofrequency procedures are not appropriate for every patient. Treatment options, risks, benefits, expected outcomes, preparation, recovery instructions and insurance coverage vary according to the diagnosis, anatomy, medical history, treatment location and applicable coverage policies. Seek urgent medical attention for new weakness, bowel or bladder dysfunction, saddle-region numbness, severe allergic symptoms or rapidly progressive neurological changes.
Last medically reviewed: August 2026
