Facet joint injections show up in a lot of spine treatment plans for back pain. Some patients get one and come into PT feeling like they borrowed someone else’s back. The pain is just gone, for a while. This article is for patients near Commack who’ve been recommended a facet joint injection and want to understand what it does, whether it fits their situation, and what to do with the window of relief it creates.
A facet joint injection places a small amount of corticosteroid medication into the joint between two vertebrae. It doesn’t fix underlying degeneration, but it reduces inflammation enough to allow physical therapy to actually work. The relief window, often weeks to a few months, is the most useful part of the whole procedure.
For information about the practice’s services, read about facet joint injections and explore the interventional pain management overview.
What is the facet joint and why does it hurt?
Your spine has two types of joints per level. The discs handle compression and load between vertebrae from the front. The facet joints handle rotational movement and stability from the back. You have two facet joints per spinal level, one on each side. Like any joint in the body, they can develop arthritis, inflammation, and joint capsule irritation over time. Facet-mediated pain typically sits in the low back or mid-back, sometimes spreads into the buttock or hip, and often gets worse with arching the back or standing upright for a long time. It tends to be worse in the morning and after prolonged sitting. It’s also usually bilateral, meaning both sides, rather than tracking down one leg the way nerve root pain does. For most patients, back pain care from a spine specialist involves sorting out facet pain from disc pain and nerve pain first, because those respond differently to treatment.
How a facet joint injection actually works
The injection places corticosteroid medication directly into or around the facet joint capsule. Sometimes a local anesthetic is added to confirm the joint is the pain source, since immediate numbness after the anesthetic portion is a diagnostic signal as much as a treatment. The steroid reduces the inflammatory response in the joint. That’s what drives most of the pain in arthritic facet joints. It doesn’t reverse the structural changes. But turning down the inflammation can break the pain-spasm cycle enough that the muscles around the spine stop protecting and the patient can actually move and load the spine again. That’s the window. It’s not a permanent fix. It’s an opening.
What the procedure looks like
Facet joint injections are done under fluoroscopic (X-ray) or ultrasound guidance in a clinic procedure room. You’ll lie face down. The skin is numbed. The needle is directed to the specific facet level that’s been identified as the pain generator from your exam and imaging. The whole thing takes 20 to 30 minutes and you go home the same day. Most patients have some soreness at the injection site for a day or two, then it quiets down. The anti-inflammatory effect builds over several days and usually peaks around day 5 to 7. For patients near Commack, the Commack spine center handles both the evaluation and interventional procedures, so you’re not navigating multiple separate providers to get this done.
How to use the injection window for PT
This is the part most patients don’t hear clearly enough. I want patients in PT within the first week after a facet injection, not the first month. The window matters and it has a time limit. Patients who rest through their injection window often find the pain returns with little having changed underneath. Patients who use it for progressive physical therapy, targeted movement retraining, and hip and core strengthening often find they need injections less frequently over time. The goal is to build muscular support around the joint so that when the steroid wears off, the surrounding system is stronger. Rest is not the strategy here. Movement is. (Boring, structured, supervised movement, but movement.)
When a facet injection fits, and when it doesn’t
Facet injections work best when the pain is clearly coming from the joint, not from a nerve root or disc herniation. If your pain travels down your leg in a clear nerve pattern with numbness and tingling, the facet joint usually isn’t the primary driver. An epidural steroid injection targeting the nerve root is more appropriate for that. If your pain is broadly muscular, a facet injection won’t help much either. A thorough spine evaluation, including physical exam, imaging, and a careful symptom history, helps your doctor identify whether your facet joints are the main source before anything is recommended. Facet injections are generally not recommended more than three to four times per year at the same level.
| Treatment option | Best suited for | Typical time to relief |
|---|---|---|
| Facet joint injection | Joint-mediated back pain, arthritis-driven inflammation | 5 to 7 days |
| Epidural steroid injection | Nerve root compression, sciatica, radiculopathy | 3 to 7 days |
| Physical therapy alone | Muscular pain, mild degeneration, post-injection rehab | 4 to 8 weeks |
| Radiofrequency neurotomy | Chronic facet pain confirmed responsive to diagnostic injection | Days to weeks (longer relief duration) |
- Show up for PT within the first week of relief, not after the pain returns
- Focus on core stability and hip strengthening during the window, not just stretching
- Avoid high-impact activity in the first few days while the injection settles in
- Tell your PT how much relief you got and when it started, so they can set appropriate intensity
Talk to your physician about whether a facet joint injection fits your specific pain pattern and imaging. The information here is general. Your physical exam, imaging, and symptom history shape the decision. This is a tool in a broader treatment plan, not a standalone fix, and it works best when PT is part of what follows.