It is a common clinical scenario: a corticosteroid injection provides significant relief for only a few months. When the pain returns, patients often feel they are out of options, caught between repeating temporary shots and considering major surgery.
This is where radiofrequency ablation (RFA) can fit into a specialized pain management plan. RFA is not a standard injection nor a surgical procedure. Instead, it is a targeted treatment that uses thermal energy to interrupt the nerve signals that carry pain to the brain.
At Clinically Managed Injections (CMI), we utilize RFA for patients who require a different approach to managing chronic inflammation and nerve sensitivity. Understanding the clinical requirements for this procedure helps you determine whether it aligns with your recovery goals.
How Radiofrequency Ablation Interrupts Pain Signals
The goal of RFA is to temporarily disable the transmission of pain.
During the procedure, a physician uses a specialized needle to reach a specific sensory nerve. Radiofrequency energy is then used to heat the needle tip to approximately 80°C.
This controlled heat creates a small “lesion” on the nerve. This lesion acts as a block, preventing the nerve from transmitting pain signals from the joint or spine to the brain.
The Nature of Nerve Regeneration
It is important for patients to understand that nerves can regenerate.
Over time, typically between six months and two years, the nerve will naturally grow back. When this happens, the previous pain symptoms may return.
This is a normal physiological process, and many patients find that repeating the procedure once the nerve has regenerated allows them to maintain their function over the long term.
Who is a Candidate for RFA?
RFA is a specialized tool used for specific types of chronic pain.
It is primarily used for “sensory” nerves, those that provide feeling, rather than “motor” nerves, which control muscle movement. This allows the physician to treat the pain without affecting your ability to move.
Common clinical applications for RFA include:
- Facet Joint Pain: For chronic discomfort in the neck or back caused by arthritis.
- Sacroiliac (SI) Joint Pain: For persistent pain where the spine meets the pelvis.
- Knee Osteoarthritis: For patients who are not candidates for joint replacement or who wish to delay surgical intervention.
If you are managing spine-related pain or sacroiliac discomfort, RFA offers a middle-ground option that is less invasive than surgery.
The Diagnostic Requirement: The Medial Branch Block
An ablation is never performed without a “diagnostic test” first. To help predict if the procedure will be effective, we first perform a diagnostic block.
During this step, a small amount of local anesthetic is injected near the target nerve. If you experience a significant reduction in pain for the duration of the anesthetic (usually a few hours), it confirms that we have identified the correct source of your pain.
Clinical observations show that patients who respond well to these diagnostic blocks are the most suitable candidates for a full radiofrequency ablation.
What to Expect During the Procedure
Radiofrequency ablation is an outpatient procedure performed at our Vancouver clinic.
You remain awake during the process, though local numbing agents are used to ensure the area is as comfortable as possible.
Our subspecialty-trained physicians use real-time X-ray (fluoroscopy) to guide the needle to the correct location. Once the needle is positioned, the physician may perform a brief “test” with a tiny electrical current to confirm the needle is exactly where it needs to be. You might feel a slight tingle or pressure during this check.
Once the position is confirmed, the thermal energy is delivered. The entire process typically takes 30 to 60 minutes. Most patients can return to their daily routine within a few days, though mild soreness at the injection site is common for about a week.
Technical FAQs Regarding Radiofrequency Ablation
1. Is the Radiofrequency Ablation painful?
We use local anesthetics to numb the skin and the surrounding area. While the procedure is generally well-tolerated, you may feel pressure or a dull ache during the treatment. Post-procedure soreness is usually managed with ice and rest.
2. How long does it take to see results?
While some patients notice improvement within a week, it often takes 2 to 4 weeks to experience the full effect of the ablation. This is because the initial soreness from the procedure needs time to resolve.
3. What if the Radiofrequency Ablation doesn’t provide relief?
The use of diagnostic blocks helps us select the most appropriate candidates, but pain is complex. If RFA does not provide the expected relief, it does not prevent you from exploring other treatments or surgical options in the future.
4. Are there risks with Radiofrequency Ablation?
Minor risks include temporary bruising or localized soreness. Serious complications are rare because our physicians use continuous image guidance to visualize the anatomy throughout the procedure.
5. How many times can RFA be repeated?
There is no specific limit. If the nerve regenerates and the pain returns after a year or two, the procedure can be repeated safely to restore the previous level of relief.
Precise Support for Your Recovery
Radiofrequency ablation is a sophisticated clinical tool for managing chronic pain. It provides a way to bridge the gap between temporary injections and invasive surgery, helping you stay active.
At CMI, our focus is on technical precision and specialist-led care. Our physicians use advanced imaging to ensure every procedure is targeted to your specific anatomy.
If you are looking for a more durable approach to chronic pain, the first step is to download our referral and questionnaire forms and have them completed by your healthcare provider.
We are here to help you understand your options and find a clear path forward.
Disclaimer: The content on this blog is for informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Every patient is unique, and individual results will vary. Please do not use this information to diagnose yourself. Always consult a qualified physician regarding your specific medical condition.
