Radiofrequency Ablation (RFA)

Careful patient selection and preparation are key to success.

• Diagnostic Nerve Block: A mandatory test where a local anesthetic is injected to numb the target nerve. Significant pain relief from this block predicts a successful outcome from RFA.
• Medical Evaluation: A thorough review of medical history, medications (especially blood thinners, which may need to be paused), and allergies.
• Informed Consent: A detailed discussion of the procedure’s goals, benefits, potential risks (e.g., temporary numbness, muscle weakness, bruising, infection), and the fact that pain may return as the nerve regenerates.
• Pre-Procedure Instructions: Patients are typically asked to fast for a few hours before the procedure due to the use of sedation.

The procedure is performed in a sterile procedure room, often with sedation for comfort.

• The Process: The patient lies on an X-ray table. The skin is cleaned and numbed with local anesthetic. Using live imaging guidance (fluoroscopy/CT), the physician precisely advances the needle to the target nerve. Low-frequency electrical stimulation may be used to ensure proper placement (e.g., eliciting a tingling sensation in the exact area of pain without muscle twitching). The radiofrequency current is then applied for a short period.
• Patient Role: The patient must report any sensations (e.g., pain, tingling) during the stimulation test to ensure accurate needle placement. They must otherwise remain still.
• Sensations: The local anesthetic causes a sting. The sedation induces relaxation. The ablation itself may cause a brief feeling of pressure or mild discomfort.
• Duration: The entire procedure typically takes 30 to 90 minutes, depending on the number of nerves being treated.

A brief recovery period is required.

• Immediate Aftercare (First 24-72 hours): Patients are monitored in a recovery area before going home. They must have a driver. Common post-procedure effects include soreness at the injection site and a temporary increase in pain. Ice and over-the-counter pain relievers are used to manage this.
• Activity: Patients are advised to take it easy for the first day or two. Strenuous activity should be avoided for about a week to allow the area to heal.
• Results: Pain relief is not immediate. The targeted pain typically begins to diminish over the following 1 to 3 weeks as the inflammation from the procedure subsides and the nerve lesion takes full effect.
• Follow-up: A follow-up appointment is scheduled to assess the outcome. Physical therapy is often recommended to strengthen supporting muscles and improve mobility, now that the pain is reduced.
• Long-Term Management: RFA provides long-lasting but not always permanent relief. Patients should understand that the nerves may regenerate, and pain can return after 9-24 months. The procedure can be safely repeated. It is a powerful component of a comprehensive, long-term pain management plan.