Medial Branch Block (MBB) and Radiofrequency Ablation (RFA):
MEDIAL BRANCH BLOCK (MBB)
Description:
- Purpose: MBB is a diagnostic procedure used to identify and confirm the specific nerves (medial branches) responsible for facet joint pain in the neck, thoracic, lumbar, or sacroiliac joint pain.
- Objective: It helps determine whether a patient is a suitable candidate for more long-term pain relief procedures like Radiofrequency Ablation (RFA).
- Procedure: A local anesthetic is injected near the medial branches of the spinal nerves under fluoroscopic guidance. If pain is significantly reduced, it suggests that those nerves are contributing to the patient’s pain.
Indications:
- Facet Joint Pain: MBB is commonly used for diagnosing and managing pain originating from the facet joints in the spine.
Considerations:
- Temporary Effect: The pain relief from MBB is temporary and serves mainly as a diagnostic tool.
- Candidacy for Radiofrequency Ablation: If MBB is found to be diagnostic, the patient can proceed with RFA which often results in improved function and mobility for the patient over a longer duration than MBB.
RADIOFREQUENCY ABLATION (RFA)
Description:
- Purpose: RFA, also known as rhizotomy, involves using heat generated by radiofrequency waves to disrupt or ablate the nerves identified in the MBB, providing more prolonged pain relief.
- Objective: It aims to interrupt pain signals from specific nerves, offering a more lasting effect compared to MBB.
- Procedure: A specialized needle is inserted, and radiofrequency energy is applied to create heat lesions on the targeted nerves, preventing them from transmitting pain signals.
- Duration of Relief: The pain relief from RFA can last several months to a year or more.
Benefits:
- Extended Relief: RFA provides longer-lasting pain relief compared to MBB.
- Improved Function: Often results in improved function and mobility for the patient.