Radiofrequency Ablation
Radiofrequency ablation (RFA) is a targeted, image-guided procedure for selected facet-mediated neck or low-back pain. At Spine & Pain Specialists of the Carolinas in Charlotte, North Carolina, interventional pain medicine specialist Aashish Jay Kumar, MD, D.ABA uses the clinical evaluation and response to diagnostic medial branch blocks to determine whether facet RFA is a reasonable option.
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How it works at a glance
Confirm the pain source before treatment
After the diagnostic pathway supports facet-mediated pain, a cannula is positioned next to the selected medial branch nerve using fluoroscopy. Controlled radiofrequency energy creates a small thermal lesion at that target.
Illustrative only — not to scale. Anatomy and procedural approach vary by patient.
01
Evaluation
02
Medial branch block
03
Review response
04
Targeted RFA
05
Follow-up
What is radiofrequency ablation?
Cervical or lumbar facet RFA—also called radiofrequency neurotomy—targets medial branch nerves that transmit pain from specific facet joints. A radiofrequency cannula is positioned near the nerve using fluoroscopic guidance. Controlled thermal energy creates a small lesion intended to interrupt pain transmission. The underlying joint is not removed or fused, and the treated nerve may regenerate.
Important distinction
Facet medial branch RFA is generally used for selected axial neck or low-back pain. It is not simply a treatment for any “damaged nerve,” a herniated disc, spinal stenosis, nerve-root compression, or classic sciatica.
Who may be considered for facet RFA?
No single examination finding or MRI result proves that a facet joint is painful. Selection combines the clinical picture with response to precisely targeted diagnostic or prognostic medial branch blocks. Potential candidates generally have:
- Predominantly axial neck or low-back pain with a compatible history and examination
- Symptoms that have not improved sufficiently with appropriate conservative treatment
- No better alternative explanation for the dominant pain generator
- A clinically meaningful temporary response to one or more medial branch blocks
The number of blocks and the required response threshold vary across clinical guidance and insurance policies. Dr. Kumar applies clinical judgment while meeting applicable coverage requirements.
What happens during the radiofrequency ablation process?
1
Clinical evaluation
Dr. Kumar reviews the pain pattern, examination, imaging when indicated, prior treatment, functional limits, medications, and competing pain generators.
2
Medial branch block(s)
A small amount of local anesthetic is placed near the suspected medial branch nerves. You track the change in your usual pain while performing normally painful activities as instructed.
3
Radiofrequency procedure
After appropriate selection, cannulae are positioned with fluoroscopy. Testing may be used, local anesthetic is administered, and controlled radiofrequency energy treats the targeted nerves.
4
Short recovery
Temporary soreness, numbness, or a sunburn-like sensation can occur. Follow individualized wound, activity, medication, and driving instructions.
5
Reassess pain and function
Benefit may not be immediate. Follow-up assesses pain, function, activity tolerance, medication use, adverse effects, and ability to progress with rehabilitation.
What are the potential benefits and limitations?
Potential benefits
- Reduced pain from well-selected facet joints
- Improved activity tolerance and participation in rehabilitation
- Reduced need for some pain medication in selected patients
- Outpatient treatment without an implanted device
Important limitations
- RFA does not treat every cause of neck or back pain
- Positive diagnostic blocks do not guarantee benefit
- Relief may be incomplete or absent
- Benefit is time-limited because nerves may regenerate
What are the risks of radiofrequency ablation?
Risks differ by spinal region, target, anatomy, medications, and medical history. They may include post-procedure soreness, temporary numbness, neuritis or dysesthesia, bleeding or hematoma, infection, allergic or contrast reaction, burn injury, temporary weakness, and rare nerve injury. This list is not exhaustive. Dr. Kumar reviews the individual risk profile and reasonable alternatives before treatment.
Radiofrequency ablation frequently asked questions
Is radiofrequency ablation used for a pinched nerve or sciatica?
Facet medial branch RFA targets small sensory nerve branches that carry pain from facet joints. It is not the standard treatment for nerve-root compression or classic radicular pain. A diagnostic evaluation is needed because pain generators can overlap.
Why are medial branch blocks performed before RFA?
History, examination, and imaging cannot reliably confirm a painful facet joint by themselves. A precisely performed diagnostic or prognostic block tests whether temporarily numbing the targeted medial branch nerves meaningfully changes the usual pain.
How long does radiofrequency ablation last?
Relief is not permanent and varies substantially. The treated nerve can regenerate, and the underlying joint condition remains. Some appropriately selected patients experience relief for months; others receive little or no benefit.
Will I be sedated for RFA?
Sedation is individualized. Local anesthetic is routinely used, while additional sedation may or may not be appropriate based on the procedure, safety, anxiety, medical history, and the need for patient feedback.
Can radiofrequency ablation be repeated?
Repeat treatment may be considered when the original procedure produced meaningful durable benefit and the same pain pattern returns. Reassessment is important before repeating it.
Clinical references
- Cohen SP, et al. Consensus practice guidelines on interventions for lumbar facet joint pain. Regional Anesthesia & Pain Medicine. 2020. PubMed
- Lee DW, et al. Latest evidence-based application for radiofrequency neurotomy: ASPN best practice guidelines. Journal of Pain Research. 2021. PubMed
- Manchikanti L, et al. Updated 2026 comprehensive evidence-based guidelines for facet joint interventions. PubMed
Educational information only. Individual evaluation is required, and outcomes cannot be guaranteed.
Is radiofrequency ablation appropriate for your pain?
Schedule an evaluation with Dr. Kumar in Charlotte to identify the likely pain generator and discuss the diagnostic pathway, expected benefit, alternatives, and risks.