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

PRP FOR THE FACET JOINTS

PRP for facet joint pain goes into the joint itself. It treats the joint and leaves its nerve supply intact. We do it only after a diagnostic medial branch block has confirmed that joint is the pain generator. The facet joints are the paired synovial joints at the back of each spinal segment. They are a common source of axial (central) neck and back pain.

How is facet joint pain diagnosed?

Each facet joint gets its nerve supply from the medial branches of two nearby dorsal rami (nerve branches). Numb those two nerves, and if that joint is the pain generator, the pain goes away while the anesthetic lasts. If it does not, the joint has been ruled out.

That is a real diagnostic test, not a guess from a picture. It is why facet pain stands on firmer ground than most spine diagnoses. Imaging alone is not enough. Facet arthrosis (breakdown of the facet joints) is common on scans of people with no pain at all.

What does facet joint pain feel like?

• Axial pain, in the neck or back itself, that does not spread past the knee or elbow
• Worse with extension and rotation; often easier bending forward
• Worse getting up after sitting, and after long standing
• Referred in familiar patterns. Neck facets send pain into the head and shoulder girdle. Low back facets send it into the buttock and back of the thigh.
• Tender over the joints themselves, a finger-width off the midline

How does PRP compare with radiofrequency ablation for facet pain?

The usual path is a diagnostic medial branch block. Then comes radiofrequency ablation of those nerves if the block confirms the target. Ablation works, and it is a truly useful procedure. But it is a denervation (it shuts off the nerve). It treats the signal, not the joint. The nerves grow back, and the procedure is repeated on a cycle.

PRP into the joint itself goes the other way. It treats the joint and leaves the nerve supply intact. A controlled randomized comparison against corticosteroid in facet joint syndrome supports it. The evidence base overall is still smaller than for the arm and leg joints.

Neither is the clear winner. Ablation gives a more predictable length of relief. PRP does not denervate a segment you may want feeling from later. That is a real trade-off. It should be made with you, not 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 only a block confirms it. Not tenderness over the joints. Not facet arthropathy on a report. Not the pattern of the pain. All three are useful for deciding whom to block. So candidacy here is almost entirely a question of what the block said.

A positive block is the case for treating. That is in someone with axial neck or back pain, a facet pattern on exam, and a segment that has kept its height without instability. Two versions of that person come through most often. One has had radiofrequency ablation and found it worked. That person does not want to repeat the cycle every eight to eighteen months for good. The other has been offered denervation and would rather not have a nerve destroyed if the joint can be treated instead. Both are reasonable, and both are covered in the denervation section below.

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

How is a PRP facet joint injection done?

Fluoroscopic (live X-ray) guidance, always. Facet joints are small, deep and set at an angle. A needle cannot be placed inside the joint reliably by feel. Contrast dye confirms the joint before the preparation goes in.

Expect two to four days of more axial pain afterward. In a joint this size, the flare can be more noticeable than the original complaint for a short time. Knowing that in advance is most of what stops people from quitting in week one.

What causes facet joint arthritis besides age?

Facet joints are ordinary synovial joints, with cartilage, capsule and synovium (the joint lining). They degenerate the same way every other synovial joint on this site does. So the same two upstream drivers apply.

Adipose-derived inflammatory signaling (inflammatory signals from fat tissue) reaches facet synovium through the blood, whether or not your spine is loaded. That is why facet arthrosis tracks metabolic health, not just age or job. Insulin resistance degrades the cartilage and the capsule collagen through the same glycation route that stiffens a tendon. Metabolic syndrome and osteoarthritis are the same conversation, held about different joints.

Then there is the behavioral driver specific to the spine: long periods bent forward. A body that sits for nine hours shifts load off the facets. Then it stands up and asks them to take it all at once. The joints that most often hurt are the ones unloaded all day and overloaded all evening. That pattern is set by a desk and a commute, not 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. It cuts the signal from a joint instead of treating the joint. The nerves grow back over months, the pain returns, and the procedure repeats. That is a lasting revenue model. For a great many patients, it is also truly the best option available.

That is medicalization doing its usual thing: milking the cow instead of curing it. It is not anyone’s bad faith. It is 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 stops sending you information. Information from a spine is worth something.

What the assessment covers

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

And the metabolic panel, for the reason above. These are synovial joints, and synovial joints answer to the inflammatory setting they sit in. Lifestyle and behavioral work is roughly 40 to 50 percent of the protocol here. It is delivered in-house, not handed over as a sheet. That is 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 right outcome when nobody yet knows which structure is causing the pain.

Where this sits against pain medication

Facet pain often sits under a long-running painkiller routine that nobody has looked at again. That is because the pain is mechanical, constant and easy to blame on aging. Finding the actual pain generator, with a block and not a guess, is the single most useful thing that can happen here. If it leads to a treatment that restores movement, the medication question changes on its own. If 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 confirm it. Why we block first.

Is this better than radiofrequency ablation?

A different trade-off. Ablation gives a more predictable length of relief. 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. Neck facets send pain into the head and shoulder. Shoulder or neck?

Will insurance cover it?

The diagnostic block sometimes; the orthobiologic no. Coverage.

Who is a good candidate for PRP for facet joint pain?

Someone with a positive medial branch block, axial neck or back pain, a facet pattern on exam, and a segment that has kept its height without instability. Two people come in most often. One had radiofrequency ablation that worked but does not want to repeat it for good. The other would rather not have a nerve destroyed if the joint itself can be treated instead.

What if my medial branch block is negative?

Then PRP is off the table for that joint. A negative or equivocal block means the target has not been confirmed. Injecting an unconfirmed target is exactly what this practice argues against. Pain that radiates points to a nerve root instead. Movement on flexion-extension views means instability that no injection makes stable. A progressive neurological deficit means a prompt surgical opinion.

How long will my back hurt after a PRP facet injection?

Expect two to four days of more axial pain afterward. In a joint this small, the flare can feel worse than the original complaint for a short time. That is expected. Knowing it in advance is most of what keeps people from giving up in the first week, before the treatment has had a chance to work.

How long does radiofrequency ablation last for facet pain?

Ablation cuts the signal from the joint instead of treating the joint. The nerves grow back over months, the pain returns, and the procedure is repeated, often every eight to eighteen months. It is a good procedure with a more predictable length of relief than PRP. For many patients it is the best option available. PRP instead treats the joint and leaves its nerve supply intact.

What makes facet joint pain worse?

Extension and rotation, getting up after sitting, and long standing. Bending forward is often easier. A long day seated shifts load off the facets. Then standing asks them to take it all at once. So the joints that hurt most are often the ones unloaded all day and overloaded all evening. Metabolic health matters too, because these joints answer to the inflammatory setting they sit in.

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.