What causes facet joint pain?

Facet joints are the small paired joints at the back of each vertebra that let your spine extend, rotate and side-bend. Like any joint, they can develop arthritic change and a swollen, irritated capsule, and a 2022 review in the Korean Journal of Pain describes that capsular inflammation, rather than the arthritis itself, as the actual source of the ache — which is why two spines with similar arthritic wear on imaging can hurt very differently. Extension-loaded postures compress these joints directly: leaning back to see a screen mounted too high, or any job that puts the neck or low back into sustained extension, drives repetitive load into exactly the joint that is already inflamed. Pain worsens with extension and rotation and eases with flexion, the reverse of a disc problem.

Why doesn’t facet joint pain show up on an MRI?

An MRI is good at showing arthritic change in a facet joint. It is not good at telling you whether that particular joint is the one generating your pain, because facet arthritis is common in pain-free spines and its severity on imaging correlates poorly with symptoms. So the disc or the arthritis that the report flags becomes the working diagnosis by default, treatment gets aimed there, and it does not help — not because the treatment was wrong, but because the target was never confirmed.

How is facet joint pain diagnosed?

Each facet joint is supplied by small sensory nerves called medial branches. Anesthetizing the medial branches feeding a suspected joint, under fluoroscopic guidance, is the only reliable way to confirm that joint as the source — if your usual pain disappears while that nerve is numb, the joint it serves is implicated. A single block is informative; because placebo response and false positives happen, a second, confirmatory block on a separate day is the standard this practice follows before recommending a permanent nerve treatment based on the result.

Can whiplash cause facet joint pain?

After a rear-end collision, the cervical facet joints are a leading source of the neck pain that follows, even when imaging looks unremarkable. A 2025 review in Pain Practice on whiplash-associated disorder describes capsular injury to these joints during the whip-like extension-flexion motion of a collision as a primary driver of chronic post-collision neck pain, distinct from and often missed alongside any disc or ligament injury the initial workup focused on. That is the exact population this practice sees along the airport corridor after a crash on I-70: a normal-looking scan and a joint that was never tested.

What is the longest-lasting treatment for facet joint pain?

Once medial branch blocks have confirmed a joint, radiofrequency ablation heats the same nerves to interrupt the pain signal for months at a time rather than hours. A 2024 meta-analysis of placebo-controlled trials in La Radiologia Medica confirmed real, durable benefit for confirmed lumbar facet pain specifically — not for back pain generally, which is precisely why the confirmation step is not optional. The nerve eventually regrows, so relief is not permanent, but it is the most durable answer this practice has for pain that a scan alone could never have located.

When surgery is not part of the plan

For confirmed facet-mediated pain without instability, nerve compression or a structural deformity driving it, surgery is not part of the treatment plan — medial branch blocks and radiofrequency ablation are the definitive interventional answer, and fusion is not indicated to treat facet pain in isolation. That changes only if imaging and exam together show a separate structural problem, such as spondylolisthesis with instability, which is a different diagnosis entirely and would be discussed as its own conversation.

Red flags, in plain terms

Frequently asked questions

How is this different from a disc problem?

Facet pain worsens with extension and rotation and eases with flexion, the reverse of most disc-driven pain, and unlike herniated disc pain it typically stays local rather than radiating in a nerve distribution.

Why do I need two injections before treatment?

A single block can be a false positive; a second, concordant response on a separate day confirms the joint before committing to radiofrequency ablation, which is a bigger intervention than a diagnostic block.

How long does relief from RFA last?

Commonly six months to over a year, because the treated nerve eventually regrows; when relief fades the same confirmed joint is generally re-treated rather than restarting the workup, detailed on radiofrequency ablation.

Can whiplash cause this months later?

Cervical facet capsular injury from a collision often presents as a slow-building or delayed pattern rather than immediate pain, which is covered on after a car accident.

Will I need surgery?

Not for confirmed facet pain alone; surgery becomes relevant only if a separate structural finding, like instability, is also present, a distinction covered on when injections stop working.

What are the symptoms of facet joint pain?

Facet pain usually stays in the neck or low back instead of running down an arm or leg. It gets worse when you lean back or twist, and it eases when you bend forward, which is the reverse of most disc pain. Numbness, weakness or a change in coordination in an arm or leg points to a nerve instead, and that needs to be seen urgently.

What should I avoid with facet joint pain?

Cut down on postures that hold your neck or low back bent backward for long periods. Leaning back to see a screen mounted too high, or a job that keeps your spine in sustained extension, presses directly on the joint that is already inflamed. Bending forward usually eases facet pain, which is one of the clues that points to these joints.

Will facet joint pain ever go away?

It can be controlled for long stretches. Once two blocks confirm the joint, radiofrequency ablation interrupts its pain signal for months at a time. The treated nerve eventually regrows, so the relief is not permanent, and when it fades the same confirmed joint is generally treated again instead of restarting the whole workup.

Related reading

• Medial branch block
• Radiofrequency ablation
• Sacroiliac joint pain
• After a car accident
• Herniated disc