How Long Does a Facet Joint Injection Last?

Patients considering a facet joint injection understandably want to know how long the relief will last. The honest answer is: it varies — and the answer depends partly on which type of facet procedure is being performed. This guide walks through the typical duration of relief for different facet procedures and what factors influence the outcome.

Therapeutic Facet Joint Injections

A therapeutic facet injection combines a local anesthetic with a corticosteroid, delivered into or near the facet joint to reduce inflammation and pain. For patients who respond well:

• Relief may begin within a few days as the steroid effect develops
• Duration typically ranges from weeks to months
• A fraction of patients experience longer-lasting relief
• A smaller fraction do not respond meaningfully to a given injection

The specific duration varies with the underlying condition (active inflammatory arthritis versus stable degenerative changes, for example), the patient’s overall health, activity patterns, and other individual factors.

Medial Branch Blocks

Medial branch blocks are typically used diagnostically rather than therapeutically. The local anesthetic lasts only hours, so the primary value of the block is information rather than durable pain relief. The pattern of relief during the anesthetic window helps confirm the facet joints as the pain source.

For patients who respond well to diagnostic blocks, the next step is often radiofrequency ablation rather than repeated medial branch blocks.

Radiofrequency Ablation (RFA)

Radiofrequency ablation disrupts the pain signal from the medial branch nerves that carry pain from the facet joints. Because the treatment affects the nerves themselves rather than reducing inflammation temporarily, the duration of relief is typically longer:

• Relief typically develops over 2 to 4 weeks as the treatment takes effect
• Duration often ranges from several months to longer
• The nerves regenerate over time, and pain may return
• The procedure can be repeated when pain returns, typically with similar results

RFA often provides more durable relief than repeated therapeutic facet injections, which is why it is commonly the longer-term plan for patients whose facet pain responds well to diagnostic blocks.

What Influences Duration

Several factors influence how long relief lasts from any facet procedure:

The underlying condition. Active flare-ups of facet inflammation often respond well and provide sustained relief. More advanced arthritic changes may respond for shorter periods.

Activity patterns. Activities that heavily load the facet joints — especially extension and rotation — can contribute to pain returning sooner. Thoughtful activity modification often extends the duration of benefit.

Core stability and back strength. Strong core and back muscles support the spine and reduce load on the facets. Patients who engage in appropriate strengthening often maintain benefit longer.

Body weight. Excess weight increases load on the spine; when relevant, weight management can contribute to longer-lasting results.

Other medical conditions. Systemic inflammatory conditions and other health issues can shorten the duration of benefit.

When Relief Is Shorter Than Expected

If a facet injection provides only very brief relief, several possibilities are worth considering:

• The facets may not be the primary pain source after all (a reassessment of the diagnosis may be warranted)
• The injection technique may need to be adjusted
• The underlying condition may have progressed to the point where longer-lasting treatments like RFA are a better fit
• Other components of the plan — physical therapy, activity modification, medication — may need more attention

Shorter-than-expected duration is information, not failure. It helps shape the next step.

When Relief Is Longer Than Expected

Some patients experience relief that lasts much longer than average. This is a good outcome and typically reflects:

• Effective resolution of an inflammatory flare
• Good response to the combined effect of injection and the rest of the plan
• Favorable underlying anatomy

Extended relief is something to be grateful for and does not necessarily predict how the next injection, if needed, will behave.

Fitting Into a Broader Plan

Facet injections and related procedures work best as part of a broader plan:

• Diagnosis-matched treatment
• Physical therapy focused on core and back stability
• Attention to activity patterns and postural habits
• Medication support as appropriate
• Reassessment over time

Patients who combine an effective procedure with the rest of the plan tend to maintain benefit longer than patients who rely on the procedure alone.

Facet Joint Care at Southwest Pain Management

Our clinics offer the full range of facet joint diagnostics and treatments. For patients whose pain responds well to diagnostic blocks, we often discuss RFA as a longer-lasting option. For patients managed with therapeutic injections, we discuss what realistic expectations look like and how to extend the benefit.

Frequently Asked Questions

Will the pain come back eventually? Usually yes, because facet procedures do not reverse the underlying arthritic changes. When pain returns, a repeat injection or RFA is often appropriate.

Is RFA better than repeated facet injections? For patients who respond well to diagnostic blocks, RFA often provides longer-lasting relief than repeated injections. Your physician will discuss which approach fits your situation.

Can I extend the duration of relief? Physical therapy, core strengthening, activity modification, and appropriate medication use can all contribute to longer-lasting benefit.

How often can facet injections be repeated? Guidelines exist for reasonable spacing and total per year. Your physician will discuss what is appropriate.

What if the injection provides only a few days of relief? Short-lived relief is information. Your physician will reassess the plan and consider alternatives.

Does RFA work the same on everyone? Most patients who had a positive response to diagnostic blocks respond to RFA, though the duration and degree of relief varies.

Request a Consultation

Contact Southwest Pain Management to discuss facet joint evaluation and treatment.