Chronic Back Pain Management: When to Consider a Medial Branch Block (MBB)

You've been dealing with chronic back pain for months or even years. You've tried everything from physical therapy and activity modification to medications and injections, but the pain never fully disappears.

Is more aggressive treatment or surgery the only option left? Not necessarily. A medial branch block (MBB) is a minimally invasive procedure that helps pinpoint where exactly your pain originates, so you can make sure treatment targets your discomfort at the source.

Our team at Centers for Pain Control & Vein Care in Hobart, La Porte, Merrillville, Munster, and Valparaiso, Indiana, offers diagnostic medial branch blocks, and we use the results to create a personalized pain management plan that actually makes a difference. Here are the signs it might be time to consider a medial branch block for yourself.

When to consider a medial branch block

A medial branch block is an injection that puts numbing medication near the medial branch nerves in your spine. These nerves transmit pain signals from your vertebral facet joints, and a medial branch block can tell us if a specific facet joint is the source of your chronic pain.

Facet joints are common sources of chronic pain, particularly in people with arthritis or previous spine injuries. When facet joints get irritated, the medial branch nerves supplying them transmit constant pain signals to your brain.

Pain from facet joints has distinctive characteristics, like worsening with twisting or bending movements, affecting one side of your spine, increasing with certain positions, or radiating into your buttocks or legs. However, facet joint pain can mimic other spinal problems, making diagnosis challenging without specific testing.

Physical examination and imaging alone can't definitively determine whether facet joints are your primary pain source. We might recommend getting a medial branch block when:

You don’t have a clear diagnosis

Many people make treatment decisions based on imaging findings alone, rather than actually understanding what's causing their symptoms. For example, your MRI shows disc degeneration or arthritis, so you assume that's the source of your pain.

But spinal imaging often shows abnormalities in people with no pain at all. And just because imaging shows a problem doesn't mean that problem is causing your specific pain.

This uncertainty can lead to unnecessary or ineffective treatments. You might receive injections targeting the wrong structure or even pursue surgery addressing a structural problem that's actually incidental, and you don’t see results because you and your doctor were treating an assumption rather than an identified pain source.

Conservative treatment isn't enough

You've completed a reasonable course of conservative care, like physical therapy, anti-inflammatory medications, and activity modification, but your pain persists or has only minimally improved. 

This is the ideal time to pursue diagnostic testing that specifically identifies whether facet joints are contributing to your pain. Rather than guessing and pursuing treatments that might not address the actual problem, a medial branch block provides objective information about your pain source.

How a medial branch block guides your path forward

When it comes to treating chronic pain, proper diagnosis is a critical first step. Getting the right diagnosis allows for targeted, effective treatment, and a medial branch block can be an invaluable tool in helping you find answers.

A medial branch block temporarily blocks pain signals from facet joints by numbing the nerves supplying them. If your pain significantly improves after the block, you have concrete evidence that facet joints are major contributors to your symptoms. You might be a good candidate for radiofrequency ablation (RFA), which is a procedure using heat to provide longer-lasting pain relief from the same nerves.

If the block doesn't relieve your pain, you gain equally important information: facet joints aren't your primary problem. This means pursuing other diagnostic approaches to identify the actual pain source rather than continuing down an ineffective treatment pathway.

Either way, you've moved beyond guessing and assumption into evidence-based pain management, and you don’t have to let chronic pain continue without understanding its source. Contact us online or by phone today to discuss whether a medial branch block could provide the diagnostic clarity you need to finally address your back pain effectively.