Heat applied precisely to the small nerves that carry pain from a spinal joint — the longest-lasting of the injection-based treatments.
What it is
The medial branch nerves supply sensation to the facet joints and do almost nothing else. If blocks have proven those joints are your pain source, a radiofrequency probe can be used to heat and interrupt those nerves. The joint is left alone; only its pain supply is treated.
What we use it for
- Confirmed facet joint pain in the neck or low back
- Whiplash that has not settled and where blocks confirm facet involvement
- Sacroiliac joint pain in selected cases
What to expect
- Two prior medial branch blocks must have given clear temporary relief.
- The procedure takes longer than a plain injection — usually 30 to 45 minutes.
- Position is confirmed by X-ray and by test stimulation before any heat is applied.
- Expect a sore back or neck for one to two weeks afterwards; this is normal and settles.
- Benefit typically begins at two to three weeks, not immediately.
Risks
Every injection carries a small risk of bleeding, infection, an allergic reaction, or a temporary increase in pain. Steroid can raise blood sugar for several days, which matters if you are diabetic. Serious complications are rare, and we will go through the specific risks for your procedure and your health before you consent to anything.
To discuss whether this is appropriate for you, call (314) 310-5577 or request an appointment.
Common questions
How long does relief last?
Commonly six to twelve months, sometimes longer. The nerves regenerate, and the procedure can be repeated.
Will it weaken my back?
The medial branch nerves are sensory to the joint. Motor function is not the target and is checked by stimulation before ablation.
Why the wait before it works?
The heated nerve takes a couple of weeks to stop transmitting, and the treated tissue is sore in the meantime.
Hurt in an accident? Start here.
You do not need a lawyer, a police report or a referral to be seen. Bring your symptoms and we will work out the rest.
Monday–Friday, 8:00 a.m. – 4:00 p.m. Same-day appointments are often available for new accident and injury patients.