How Radiofrequency Ablation Works

RFA is usually performed in an outpatient setting and takes about 30–60 minutes. You’ll remain awake but comfortably numbed, with mild sedation if needed.

Here’s what happens step by step:

• Diagnosis First – Before recommending RFA, your doctor performs one or two diagnostic nerve blocks. These short procedures temporarily numb the suspected pain nerves to confirm they’re the true source of your pain.
• Precision Testing – During the RFA itself, your doctor performs sensory and motor testing. This ensures the probe is next to the correct sensory nerve – and away from any motor nerves that control movement.
• Radiofrequency Energy Applied – Once confirmed, a small burst of radiofrequency current gently heats the nerve for about 90 seconds. You might feel mild warmth or pressure.
• Nerve “Quieting” Phase – The treated nerve slowly stops sending pain signals over the next 7 to 14 days.
• Recovery – You can go home the same day and typically resume normal activity within 24–48 hours.

RFA doesn’t damage surrounding tissues or require stitches — and most patients notice steady improvement over the next few weeks.

How Your Doctor Determines if RFA Is Right for You

Radiofrequency ablation isn’t a first-line treatment — it’s offered when other options like medications, physical therapy, or steroid injections haven’t provided lasting relief.

Before recommending RFA, your pain specialist performs a diagnostic evaluation to confirm that the targeted nerves are truly causing your pain. This process may include:

• Medical history and examination: Reviewing where your pain starts, what worsens or relieves it, and how long it’s lasted.
• Imaging tests: X-rays, MRI, or CT scans help identify arthritis, facet joint degeneration, or inflammation that may be irritating nearby nerves.
• Diagnostic nerve blocks: A small amount of numbing medicine is injected around the suspected nerve. If your pain temporarily disappears, it confirms that nerve as the pain source. RFA can then be performed on the same nerve for longer-lasting relief.

If your pain doesn’t respond to the diagnostic block, your doctor will explore other causes and treatments – ensuring RFA is used only when it’s the right match for your specific condition.

When is Nerve Ablation Procedure Necessary?

Pain is the body’s alarm system — a vital signal that something’s wrong.

But when pain lingers for months after an injury or inflammation has healed, it’s no longer protecting you. It becomes chronic pain, and instead of warning your body, it limits your life.

That’s where spinal nerve ablation (RFA) comes in. The RFA Procedure is a minimally invasive, nonsurgical procedure that quiets overactive pain nerves so you can move, sleep, and function without constant discomfort. It doesn’t affect your ability to feel or move — it simply stops the damaged sensory nerves from sending unnecessary pain signals to your brain.

What Is Back Nerve Ablation (RFA)?

Radiofrequency ablation (sometimes called radiofrequency neurotomy or rhizotomy) uses a carefully controlled electrical current to heat a small area of nerve tissue, stopping it from transmitting pain signals.

Your doctor uses real-time imaging to guide a thin needle to the exact nerve responsible for your pain. A special probe then delivers a brief burst of radiofrequency energy that warms the tissue around the nerve, “turning off” the pain signal.

Common areas treated with RFA include:

• Facet joint pain in the neck, mid-back, or low-back (cervical, thoracic & lumbar facet joints)
• Sacroiliac (SI) joints
• Knees (for arthritis-related pain)

Because RFA only targets sensory nerves, it does not affect your ability to move or control muscles.

Does Radiofrequency Ablation Hurt?

Most patients describe the procedure as mildly uncomfortable, not painful.

You’ll receive local anesthesia to numb the skin and surrounding area. During nerve testing, you might feel a brief tingling or pressure — this helps your doctor confirm the correct placement. When the nerve is ablated, you may feel a momentary warm sensation, but it’s well-tolerated by most patients.

Afterward, the treatment site can be a little sore or bruised for a few days. Ice packs and over-the-counter pain medicine are usually all that’s needed.

How Long Does It Take for Radiofrequency Ablation to Work?

It’s normal not to feel instant relief right after the procedure.

Most patients begin noticing improvement within 7 to 14 days, but the full benefit may take up to three or four weeks.

That’s because RFA works by creating a small, controlled heat lesion that slowly disrupts the pain pathway. It takes time for the nerve to stop transmitting those signals completely and for surrounding tissues to calm down.

During this period, you may experience:

• Temporary soreness or muscle stiffness at the treatment site
• Occasional “nerve irritation” sensations such as tingling or mild burning — these fade as healing progresses

Gentle stretching and short walks can help maintain mobility while the nerve settles.

How Long Does Radiofrequency Ablation Last?

Pain relief from RFA can last anywhere from 6 months to well over 18 months, and in some cases, it may even be permanent. Individual results vary.

Over time, the targeted nerves may gradually regenerate, but they often do so slowly — and when they return, pain is often less intense than before.

If pain does come back, RFA can be safely repeated once the nerve regrows. Many patients choose to repeat the procedure to maintain long-term relief.

What to Expect After Radiofrequency Ablation

After your RFA, you’ll spend a short time in recovery, then go home the same day.

Here’s what to expect in the hours and days that follow:

Immediately after the procedure

• You can walk and move normally, though your doctor may ask you to avoid heavy lifting or strenuous activity for 24 hours.
• Mild soreness, swelling, or bruising near the injection site is common.

First week

• Use ice packs (20 minutes on, 20 minutes off) to reduce swelling.
• Avoid soaking in hot tubs or pools for 48 hours.
• Over-the-counter pain relief such as acetaminophen or ibuprofen is typically enough for any discomfort.

In the following weeks

• As the treated nerves quiet down, your pain should gradually ease.
• Your doctor may recommend physical therapy or gentle exercises to help restore flexibility and strength.
• Call us if you notice unusual symptoms such as persistent numbness, weakness, or fever – though these are rare.

How to Sleep After Radiofrequency Ablation

Getting comfortable after RFA can take a little trial and error, especially in the first few nights. These tips can help:

• Avoid lying directly on the treated area for several days.
• Use supportive pillows to cushion your neck, back, or knees depending on the treated site.
• Sleep on your back or side with a pillow between your knees to maintain alignment.
• Apply an ice pack before bed to reduce tenderness and help you relax.
• If you experience muscle tightness, light stretching before bedtime can make a big difference.

Most patients return to normal sleep routines within a few days.

Can Radiofrequency Ablation Cause More Pain?

It’s possible to feel temporary increased soreness after the procedure — this is part of the healing process.

The heat used to disable the sensory nerve can cause mild inflammation for a short period. That irritation usually subsides within a week or two and is often followed by progressive pain relief.

Serious complications such as infection or nerve injury are extremely rare. Because your doctor uses imaging guidance and sensory/motor testing during the procedure, motor nerves (which control muscle movement) are protected.

Is Radiofrequency Ablation Covered by Insurance?

Yes — most private insurance plans cover RFA when it’s medically necessary and conservative treatments (like physical therapy or injections) haven’t provided lasting relief

Most plans require:

• Diagnostic nerve blocks confirming the source of pain
• Pre-authorization
• Documentation of chronic pain lasting more than three months

Your clinic’s insurance coordinator can review your coverage details and help with paperwork before scheduling your procedure.

How Safe and Effective Is RFA?

RFA has been safely used for over 30 years and continues to improve with modern imaging and technology.

Clinical studies show that about 70–80% of patients experience significant pain reduction – often 50% or greater improvement lasting a year or more.

Because it’s minimally invasive, there’s no incision, no hospital stay, and minimal downtime.

Ready to Find Lasting Relief? Start Your Evaluation Today

Radiofrequency ablation offers targeted, lasting relief for many people living with chronic neck, back, or knee pain. It works by addressing the source of the problem — the overactive pain nerves — while leaving your muscle control and healthy sensation intact.

If chronic pain is keeping you from sleeping, moving, or enjoying your daily life, talk to your UES Interventional Pain specialist to see if RFA is right for you.

If you’re ready to explore a proven, non-surgical path to long-lasting relief, call us today. Limited same-day evaluations are available.