Facet pain is a diagnosis you make with a needle, not a scanner

PRP FOR THE FACET JOINTS

The facet joints are the paired synovial joints at the back of each spinal segment. They are a common source of axial neck and back pain, and one of the few spinal pain generators that can be identified with reasonable confidence.

Why they can be identified when discs often cannot

Each facet joint is supplied by the medial branches of two adjacent dorsal rami. Anesthetize those two nerves and, if that joint is the pain generator, the pain goes away for the duration of the anesthetic. If it does not, the joint has been ruled out.

That is a genuine diagnostic test rather than an inference from a picture, and it is why facet-mediated pain is on firmer ground than most spinal diagnoses. Imaging alone is not sufficient — facet arthrosis is common on scans of people with no pain at all.

What facet pain feels like

• Axial pain — in the neck or back itself — rather than radiating past the knee or elbow
• Worse with extension and rotation; often easier bending forward
• Worse getting up after sitting, and after prolonged standing
• Referred in recognizable patterns — cervical facets into the head and shoulder girdle, lumbar facets into the buttock and posterior thigh
• Tender over the joints themselves, a finger-width off the midline

Where PRP fits against the usual sequence

The conventional path is a diagnostic medial branch block, then radiofrequency ablation of those nerves if the block confirms the target. Ablation works and it is a genuinely useful procedure — but it is a denervation. It treats the signal rather than the joint, the nerves regenerate, and the procedure is repeated on a cycle.

PRP into the joint itself is the other direction: treating the joint and leaving the nerve supply intact. A controlled randomized comparison against corticosteroid in facet joint syndrome supports it, and the evidence base overall remains smaller than for peripheral joints.

Neither is the obvious winner. Ablation gives more predictable duration; PRP does not denervate a segment you may want sensation from later. That is a real trade and it should be made with you rather than for you.

The block decides, and nothing else does

Everything above builds to one point: facet pain is confirmed with a diagnostic medial branch block, and a block is the only thing that confirms it. Not tenderness over the joints, not facet arthropathy on a report, not the pattern of the pain, useful as all three are for deciding whom to block. So candidacy here is almost entirely a question of what the block said.

A positive block, in someone with axial neck or back pain, a facet pattern on examination and a segment that has kept its height without instability, is the case for treating. Two versions of that person come through most often: the one who has had radiofrequency ablation, found it worked, and does not want to repeat the cycle every eight to eighteen months indefinitely; and the one who has been offered denervation and would rather not have a nerve destroyed if there is a way to treat the joint instead. Both are reasonable and both are addressed in the denervation section below.

A negative or equivocal block ends it. The target has not been confirmed, and injecting an unconfirmed target is the practice this site exists to argue against. Radicular pain means a nerve root, which is a different diagnosis. Movement on flexion-extension views means instability, which no injection stabilizes. Progressive neurological deficit means a surgical opinion, promptly.

How it is done

Fluoroscopic guidance, always. Facet joints are small, deep and obliquely oriented, and intra-articular placement cannot be achieved reliably by feel. Contrast confirms the joint before the preparation goes in.

Expect two to four days of increased axial pain afterward. In a joint this size the flare can be more noticeable than the original complaint for a short period, and knowing that in advance is most of what stops people abandoning it in week one.

Why these joints fail, beyond the years

Facet joints are ordinary synovial joints — cartilage, capsule, synovium — and they degenerate the way every other synovial joint on this site degenerates. Which means the same two upstream drivers apply.

Adipose-derived inflammatory signaling reaches facet synovium through the circulation whether or not your spine is loaded, which is why facet arthrosis tracks metabolic health and not simply age or occupation. Insulin resistance degrades the cartilage and the capsular collagen through the same glycation route that stiffens a tendon. Metabolic syndrome and osteoarthritis are the same conversation held about different joints.

And the behavioral driver that is specific to the spine: sustained flexion. A body that spends nine hours seated shifts load off the facets, then stands up and asks them to take it all at once. The joints most often symptomatic are the ones that spent the day being unloaded and the evening being overloaded — a pattern set by a desk and a commute rather than by anything a patient chose.

The denervation question, asked honestly

Radiofrequency ablation is a good procedure and this practice is not against it. But it is worth naming what it is: cutting the signal from a joint rather than treating the joint. The nerves regenerate over months, the pain returns, and the procedure repeats — which is a durable revenue model and also, for a great many patients, genuinely the best available option.

That is medicalization doing its familiar thing: milking the cow rather than curing it, not through anyone’s bad faith but because the payment system funds the repeatable procedure and nothing upstream of it. The reason to look at the joint instead is not that ablation is wrong. It is that a segment you denervate is a segment you have stopped receiving information from, and information from a spine is worth something.

What the assessment covers

The facet pattern on examination, extension and rotation loaded and unloaded. The segment above and below, because referred patterns overlap and the joint that hurts is not always the joint you can feel. Flexion-extension views where instability is a question. Your imaging read against the examination rather than in place of it.

And the metabolic panel, for the reason above — these are synovial joints, and synovial joints answer to the inflammatory environment they sit in. Lifestyle and behavioral work is roughly 40 to 50 percent of the protocol here, delivered in-house rather than handed over as a sheet, because the injection buys a window and something has to fill it.

A fair number of people leave with a diagnostic block booked and no treatment decided. That is the correct outcome when nobody yet knows which structure is generating the pain.

Where this sits against pain medication

Facet-mediated pain frequently sits underneath a long-standing analgesic regimen that nobody has revisited, because the pain is mechanical, constant and easy to attribute to aging. Identifying an actual pain generator, with a block rather than a guess, is the single most useful thing that can happen to that situation. Where it leads to a treatment that restores movement, the medication question changes on its own; where it does not, you have at least learned something true about your spine.

What people ask about facet pain

How do I know it is my facets?

A diagnostic medial branch block. Imaging alone does not establish it. Why we block first.

Is this better than radiofrequency ablation?

Different trade. Ablation is more predictable in duration; PRP does not denervate the segment. How we weigh these choices.

Does it work in the neck as well as the back?

The same principle applies at both, and cervical facets refer into the head and shoulder. Shoulder or neck?

Will insurance cover it?

The diagnostic block sometimes; the orthobiologic no. Coverage.

Related reading

• After a car accident
• PRP for the disc
• Spine and sacroiliac joint
• Failed back surgery
• Platelet lysate
• The cervical facet joint after whiplash

On systemic factors: the causal work quantifying metabolic and lifestyle contributions in the spine has been done on the intervertebral disc, not on the facet joints, and we are not going to transfer those numbers to a different structure. They are on the discogenic pain page where they belong. What applies here is the general point that a joint repairs on the body's budget — what we measure.