The anatomical target defines the procedure.
Facet procedures
Medial Branch Blocks
A medial branch block places a small amount of local anesthetic near nerves that carry sensation from facet joints. In this pathway its main purpose is to test whether temporarily numbing those nerves changes the usual pain and function.
Quick orientation
What to know first
Selection depends on diagnosis, prior care, risks, and a question the procedure can answer.
No block or injection automatically commits a patient to another procedure.
Choose the guide that matches your question
Explore the specific guides.
Use these links to learn about related symptoms, conditions, and treatments. An individual evaluation is still needed to determine a diagnosis or whether a treatment may be appropriate.
Specific treatment
Cervical Medial Branch Block
Cervical medial branch block anatomy, diagnostic role, selection context, risks, and next-step interpretation.
Open this guideSpecific treatment
Lumbar Medial Branch Block
Lumbar medial branch block anatomy, diagnostic role, selection context, risks, and next-step interpretation.
Open this guideTarget and mechanism
The target defines the procedure
Medial branch nerves run outside the facet joint along predictable bony landmarks. A block targets the nerve, not the joint space, and cervical and lumbar techniques are not interchangeable.
Patient selection
Selection questions
Selection begins with a specific clinical question and an anatomic target. It also considers competing diagnoses, prior treatment, medication and bleeding risk, infection risk, goals, and whether the result would change care. No related listing, scan finding, or isolated examination maneuver establishes candidacy.
A predominantly axial pain pattern that plausibly matches the proposed target
Appropriate evaluation and conservative care have not resolved the decision
The result is expected to change the treatment plan
No medical or anatomic factor makes the procedure unsuitable
A staged decision
How we decide what may come next
Using image guidance, the clinician positions a fine needle near the intended medial branch nerve and injects a small volume of medication. The patient then records the usual pain and meaningful activities during the expected anesthetic window. A clear, concordant response may support an RFA discussion; an unclear response should prompt reassessment.
Related care
Conditions this treatment may be considered for
These related guides show educational connections. They do not establish candidacy, a recommendation, or a required sequence.
Diagnostic
Facet Joint Pain
This page explains the general diagnostic role. The cervical and lumbar guides explain region-specific anatomy and selection.
Explore this pageDecision process
Decision sequence
A diagnostic procedure provides information rather than an obligation to proceed. The response must be compared with the expected medication window, the usual pain, and meaningful activities. An unclear or discordant result should reopen the diagnosis and alternatives instead of triggering an automatic next procedure.
Review the pain pattern, neurologic symptoms, imaging, and prior care
Set measurable pain and functional goals before any procedure
Choose the next step from the full clinical picture rather than one isolated test
Evidence at a glance
Evidence at a glance
Study results depend on selection, comparator, technique, outcome, and follow-up.
Guidelines support image guidance and careful selection but differ on block protocols and thresholds.
Systematic reviews reach different conclusions because selection methods, comparators, techniques, and follow-up vary.
Average study results cannot predict an individual response.
Decision quality matters
Evidence, limits, and who it may fit
A listed option or diagnostic response does not establish candidacy. Evidence and uncertainty must be matched to the individual question.
Risks and limits
Evidence, risks, and limits
Guidelines support image guidance and careful selection but differ on block protocols and thresholds. Systematic reviews reach different conclusions because selection methods, comparators, techniques, and follow-up vary. Average study results cannot predict an individual response.
Symptoms, examination, and imaging do not identify a painful facet joint with certainty.
A diagnostic response can be false-positive or false-negative.
Procedure choice, number of blocks, response threshold, medication, and technique require individualized clinical judgment.
The visit
What to expect from an evaluation
The visit should define the diagnosis, intended target, evidence, alternatives, risks, and the next useful decision. It should also separate clinical recommendations from insurance requirements, address medication and health factors, and explain what would count as an interpretable result without presenting one threshold as universal.
Common questions
Medial Branch Blocks FAQ
These answers are educational and cannot determine an individual diagnosis or treatment plan.
Is a medial branch block the same as a facet joint injection?
No. A medial branch block targets a nerve outside the joint; a facet injection enters the joint.
Does relief prove the joint is the source?
No. The result can be false-positive or false-negative and must match the expected timing and activities.
Does a positive block mean I must have RFA?
No. It may inform a separate decision after risks, alternatives, goals, and uncertainty are reviewed.
Question before procedure
Start with a target-specific consultation
A consultation can clarify whether this procedure, another treatment, or continued diagnostic work fits the clinical picture.
