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Medial Branch Block
At Compass Pain and Wellness, medial branch blocks are used as part of a multidisciplinary, individualized treatment plan to reduce pain, improve function, and restore quality of life.
UNDERSTANDING THE SCIENCE
What Is a Medial Branch Block (MBB)?
A medial branch block (MBB) is a minimally invasive, diagnostic, and therapeutic procedure used to determine whether pain originates from the facet joints of the spine. By delivering a small amount of local anesthetic to the medial branch nerves that supply these joints, your physician can identify the source of chronic neck or back pain¹.
MBB diagnoses whether facet joints are the source of pain and provides temporary pain relief lasting several hours to days. This procedure guides treatment decisions, including the potential use of radiofrequency ablation for longer-term relief.
At Compass Pain and Wellness, our specialists perform MBB procedures in our in-office procedural suite using fluoroscopic (X-ray) guidance to ensure accuracy and patient comfort.
advantages
What Symptoms and Conditions Does It Treat?
Medial branch blocks primarily address chronic pain stemming from facet joint irritation or arthritis².
- Localized neck or back pain
- Pain that worsens with twisting or bending
- Pain that improves temporarily with rest or a diagnostic anesthetic injection
- Cervical, thoracic, or lumbar facet joint arthritis
- Sacroiliac joint dysfunction (if facet joints are suspected)
- Chronic axial spinal pain (pain that does not radiate into the arms or legs)
MBBs are often performed before radiofrequency ablation to confirm that the targeted nerves are the source of pain.
The MBB procedure works by temporarily numbing the medial branch nerves that carry pain signals from the facet joints to the brain³. Step-by-Step Mechanism:
- The patient is positioned comfortably, and the skin over the injection site is cleaned and numbed.
- Using fluoroscopic imaging, a thin needle is guided to the medial branch nerve near the facet joint
- A small amount of local anesthetic is injected to temporarily block pain signals.
- The patient monitors for pain relief over several hours, which confirms whether the facet joint is the source of pain.
This temporary relief can last from a few hours to a few days and helps your physician determine the best next steps for longer-term management.
IDEAL CANDIDATES
Who Is a Good Candidate?
Medial branch blocks may be recommended for patients who:
- Have chronic neck, mid-back, or lower-back pain suspected to originate from facet joints
- Are being considered for radiofrequency ablation or other interventional procedures
- Have not responded fully to conservative measures like physical therapy, medications, or lifestyle changes
Not recommended if:
- You have an infection at the injection site
- You have an active bleeding disorder or cannot safely pause anticoagulants
- You are unable to lie still during the procedure
At Compass Pain and Wellness, every patient receives a comprehensive evaluation to ensure the procedure is safe, accurate, and clinically appropriate.
THE PROCESS
What to Expect on Procedure Day
Preparation:
- Review of medical history, imaging studies, and current medications
- Skin over the target area is cleaned and numbed
Imaging Guidance:
- Using fluoroscopy, the physician guides the needle precisely to the medial branch nerve
Injection:
- A small volume of anesthetic is injected
- The patient may feel mild pressure or tingling during the injection
Observation:
- Brief monitoring before discharge
- Most patients resume normal activities the same day with minimal restrictions
The procedure typically takes 15–30 minutes, including preparation and recovery.
Typical Recovery Experience:
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Mild soreness at the injection site for 24–48 hours
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Temporary numbness or tingling along the treated region
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Most patients return to normal activities the same day with gentle movement
Next Steps:
- Pain relief from the MBB is temporary, usually lasting a few hours to days
- Your physician will use the response to guide whether radiofrequency ablation or other interventions are appropriate
At Compass Pain and Wellness, your physician may also coordinate with our in-house physical therapy team or recommend adjunctive therapies such as PEMF or red-light therapy to enhance recovery and maximize long-term results.
Expected Benefits:
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Provides temporary relief from facet-mediated pain
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Helps confirm the source of chronic spine pain
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Assists in planning long-term interventions, like RFA, with a higher likelihood of success¹
Evidence-Based Outcomes:
- Positive response to MBB strongly predicts success with subsequent radiofrequency ablation
- While relief from the block is short-term, it is a critical step in a comprehensive pain management plan
