Facet syndrome: when the joints get the blame and the injections do not deliver.

Facet joints wear with age in almost everyone. Whether yours are the reason you hurt is a different question, and the answer matters.

This page is about understanding the condition and the role the brain and nervous system can play in it. It is not a diagnosis. Your own clinicians know your case.

What spinal facet syndrome is

Each vertebra connects to the one above and below at two small joints at the back of the spine, the facet joints. They are true joints, with cartilage, a capsule and a nerve supply, and they guide how the spine bends and turns. Like any joint they can show wear, called facet arthropathy or facet arthritis, and they can be inflamed after a strain. Facet syndrome is the name given when back or neck pain is attributed to them. The textbook picture is pain to one or both sides of the spine, worse when leaning backwards or twisting, sometimes spreading to the buttock or thigh but not below the knee.

The diagnosis is made clinically, sometimes supported by imaging, and confirmed, in theory, by injecting local anaesthetic around the small nerves that supply the joints: if the pain disappears while the anaesthetic lasts, the joints are declared the source. Treatment is then steroid injections into the joints or radiofrequency denervation (ablation), which uses heat to interrupt those nerves.

The neuroplastic contribution

Neuroplastic symptoms are real symptoms produced by learned pathways in the brain and nervous system rather than by ongoing damage or disease in the body. A back that has hurt for months develops a sensitized alarm: ordinary movement, ordinary wear and ordinary muscle tension all get reported as pain, and the belief that the spine is damaged keeps the alarm loud. The pain is genuine. It is not imaginary and not 'all in your head'. Because the brain can change, the alarm can be turned down.

The ATNS Index of Neuroplastic Symptoms is direct about this diagnosis. Back pain is often attributed to facet syndrome, and that attribution is often inaccurate. The index advises an evaluation for neuroplastic symptoms, especially when the patient has failed injections and nerve blocks aimed at the facets. The reasoning:

• Facet wear on scans is common in pain-free people, so finding it does not explain pain.
• A short-lived response to an anaesthetic block is heavily shaped by expectation, which is why sham-controlled studies find much smaller effects than open ones.
• When the definitive treatment, denervating the joint's nerves, does not relieve the pain, the simplest explanation is that the joints were not the main source.

That failure is not a dead end. It is information pointing toward the nervous system. The mechanism is explained in our guide to central sensitization, and the broader picture in chronic back pain and ACT. The related label degenerative disc disease raises the same issues.

What the research shows

The largest test of facet-targeted treatment is the MINT trial series, published in JAMA in 2017. People with chronic low back pain who had responded to a diagnostic block were randomized to radiofrequency denervation plus exercise, or exercise alone. At three months the difference in pain intensity was close to zero, and the authors concluded that denervation added no clinically important benefit. The trial has been debated over technique and patient selection, but it remains the best evidence available.

Earlier, smaller studies were mixed. A 2005 double-blind, sham-controlled trial of 31 patients reported more treatment successes in the radiofrequency group, while a 2014 systematic review of four randomized trials found conflicting evidence at three to six months and called for longer follow-up. An observational study tracking success after denervation found that 76 percent reported success in the first three weeks, falling to 32 percent at six months and 22 percent at one year. That trajectory, strong early relief fading over months, is typical of treatments whose benefit is driven largely by expectation and by the natural ebb and flow of chronic pain.

None of these studies tested a brain-focused treatment, and some people do have painful facet joints that respond durably. What the research establishes is that facet-targeted procedures help far less reliably than the diagnosis implies, which is why the ATNS index flags the people they have failed for a neuroplastic evaluation.

Signs the brain may be part of the picture

• Facet injections or radiofrequency denervation gave brief relief, or none, and the pain returned.
• Scans show facet wear that your clinician says is common for your age.
• Pain does not reliably follow the leaning-back-and-twisting pattern, or spreads across the whole back.
• Pain flares with stress, worry, poor sleep or emotional events more than with movement.
• Pain is present at rest or at night, or wakes you without a position change.

A solution that addresses it

Pain and symptom reprocessing is an approach built for the nervous system's contribution to pain. It combines education about neuroplastic pain (including the reassuring fact that facet wear is normal and does not predict pain), somatic tracking (attending to the back sensation with curiosity rather than dread), reducing fear and threat, a graded return to bending, twisting and lifting, emotional awareness and expression, and acceptance and commitment skills. Trained clinicians deliver it, and digital programs are widening access. It can be used whether or not you have had procedures, and alongside physiotherapy.

Cindra is a daily AI companion built around these approaches, with daily check-ins, short practices and plain-language lessons for people whose pain has a neuroplastic component. If the injections did not deliver, you can join the waitlist.

What to do next

1. Get the spine assessed. See a clinician to exclude the uncommon serious causes of back pain: fracture, infection, tumour, inflammatory spondyloarthritis, and nerve compression with weakness.
2. Read your scan with the right context. Ask how common your facet changes are in pain-free people of your age. The honest answer is usually 'very'.
3. If procedures have failed, treat that as information. The ATNS index says this is the moment to evaluate for neuroplastic symptoms. Ask directly.
4. Start retraining the alarm. Read hurt is not harm and begin gentle, graded movement into bending and twisting.

Seek prompt medical care for back pain with fever, unexplained weight loss, numbness in the saddle area, loss of bladder or bowel control, progressive leg weakness, or pain after a significant fall, especially if you have osteoporosis.

This article is for general education and is not medical advice, and it does not diagnose or treat any condition. Persistent symptoms deserve a proper medical assessment to rule out disease or injury before a neuroplastic explanation is considered. If your symptoms are new, changing, or come with red-flag signs such as fever, unexplained weight loss, numbness or weakness, chest pain, or loss of bladder or bowel control, see a clinician promptly.