Who is a candidate for radiofrequency ablation?

Two things. First, the joint has to have proved itself, twice. That means a medial branch block on two separate days that switched the pain off for about as long as the anesthetic lasted. Second, the pain has to be the joint’s kind. It sits across the back or the base of the neck and is worse arching and turning. It does not shoot down a limb in a line. A patient who arrives asking for the burn because a friend in O’Fallon had one gets the blocks first. That is what separates the trials that worked from the ones that did not.

How does radiofrequency ablation work?

An insulated needle with a bare tip is placed alongside the medial branch under X-ray. A small current heats the tip to about 80°C for roughly ninety seconds. The heat coagulates (cooks) a few millimeters of nerve. Beyond that point the fiber degenerates (breaks down), and the joint’s complaint stops reaching the spinal cord. The joint itself is untouched. The arthritis is still there, and the capsule is still loaded every time you lean back. Over six to eighteen months the nerve regrows along its old sheath. That is why the relief has a lifespan, and why the procedure can be repeated.

Understand what is quiet and what is not. The pain sensors in the joint capsule are the signal that has been cut. Two things that made that signal louder than the joint deserved are still running. One is a spinal cord primed by metabolic inflammation to amplify whatever arrives. The other is a body that has spent months guarding and losing the deep back muscle that steadies the segment. A 2009 study found the multifidus (a deep spine muscle) thins after a successful neurotomy without worsening the result. Nobody should read that as permission to leave the muscle alone. The third driver is not tissue. The job that loads the joint has not changed, and neither has the sleep debt of the shift that goes with it. The lesion buys a window. Movement, sleep and the metabolic work are what the window is for. That is why they are roughly 40–50% of the plan here, not a handout at the door.

The visit math for the long-drive patient

A patient in Highland is about 55 minutes from the office with clear roads and no traffic; Edwardsville is about 40. Someone on repeated steroid injections for facet pain crosses the river for every one. They absorb the steroid every time. They spend the winter wondering whether the bridge will be iced on the morning of the next appointment. Ablation turns that pattern into one procedure visit, one check, and a stretch of months in which the phone is the follow-up. There is no sedation; you drive yourself home and go back to normal activity, including work, within two to four hours. Some patients book a shift swap for every crossing. For them, that is the difference between a treatment they can keep up and one they quietly give up.

What is the success rate of radiofrequency ablation for back pain?

The most quoted negative result is the Dutch MINT program, three randomized trials published in JAMA in 2017. It found that adding radiofrequency to an exercise program made no clinically important difference at three months. Read the selection. Patients qualified on a single block with at least 50% relief. Technique varied by site. The outcome was pain intensity at three months in a group already doing structured exercise. That is a fair test of ablation offered loosely. It is not a test of ablation offered after two concordant blocks (blocks that agree) with the needle laid parallel to the nerve. The 2000 Spine study that defined the stricter method reported that most patients selected by double blocks still had at least 60% relief at twelve months. A 2017 meta-analysis of randomized trials found conventional radiofrequency superior to sham or control at a year. The 2020 multispecialty consensus guidelines keep the procedure inside that gate. So does this practice: strict selection, parallel placement, honest counting of months.

What is recovery like after radiofrequency ablation?

What areas can radiofrequency ablation treat?

Lower back levels are the most common target. Neck facets are treated the same way for neck pain. They are also treated for headaches that the upper joints send to the back of the skull. In the neck we take more care with depth because of what lies in front of the nerve. The sacroiliac joint is fed by a fan of small side branches, not two tidy nerves. So it is ablated with cooled-tip probes that make a larger lesion. A 2008 placebo-controlled trial found that technique better than sham for sacroiliac pain that had responded to a diagnostic injection. The nerves around the knee can be treated the same way for arthritic knee pain when replacement is not on the table.

What happens on the day

Frequently asked questions

How long until it works, and how long does it hold?

Expect the treated area to ache for a week or two. The benefit shows by three to four weeks, then holds for six to eighteen months as the nerve regrows. The timeline is laid out on our what to expect page.

Will I need the blocks again before a repeat?

Usually not, provided the first ablation gave clear relief for months and the same pain has returned in the same pattern. A different pattern gets a new medial branch block, because a different joint may have joined in.

Can I go straight back to work in Illinois?

Within two to four hours for most jobs, since nothing is sedated and nothing is fused; if the pain is a work-comp matter, the documentation that goes with an ablation is described on the page for patients injured at work.

What if the relief only lasts four months?

Shorter relief usually means a nerve regrew early, a level was missed, or something besides the joint is driving the pain. Each of those has a different next step. We work through them on the page about injections that stop working.

Why does my back hurt worse after radiofrequency ablation?

A deep, sunburn-like ache over the treated levels is expected for one to two weeks. It can feel worse than the pain you came in with. It fades as the heated nerve stops reporting. Judge the result at three to four weeks, not on day two. Pain that climbs after the first week, fever, or new weakness in a leg or arm is a same-day call.

What are the disadvantages of radiofrequency ablation?

The relief has a lifespan. The nerve regrows over six to eighteen months, so the procedure may need repeating. It quiets the joint’s signal. It leaves the arthritis, the weakened deep back muscle and the job that loads the joint unchanged. You need two successful nerve blocks first. Expect a week or two of soreness, and occasionally a patch of changed skin feeling that settles.

Is radiofrequency ablation painful?

The skin is numbed, and anesthetic goes in before each nerve is heated for roughly ninety seconds. You feel warmth and pressure, occasionally a deep ache. There is no sedation, so you stay awake and drive yourself home. The harder part usually comes afterward: a sunburn-like ache over the treated area for one to two weeks before the benefit shows.

Related reading

• Facet joint pain
• Medial branch block
• Sacroiliac joint pain
• Genicular nerve block
• Sleep, movement and behavior