Why does my lower back hurt when I stand?

Standing upright puts the lumbar spine into extension. Extension closes down the facet joints. It narrows both the central canal and the foramina (the side openings where nerves exit). Every structure at the back of the spine gets loaded. Every space at the back of the spine gets smaller.

Sitting reverses it. Flexion (bending forward) opens the canal and unloads the facets. That is why the relief of sitting down is often immediate and complete. That reversal is diagnostic. It is the opposite of what a disc-dominant back does.

What causes lower back pain only when standing?

They overlap and often occur together. That is because the facet hypertrophy (enlarged facet joints) that causes one adds to the other. Which one is dominant changes what helps. That is worth settling, not guessing.

How can I tell facet pain from spinal stenosis?

Can your standing tolerance get better?

Standing tolerance is also a question of conditioning and terrain. The hip extensors and deep abdominal wall share the load that the facets would otherwise carry. Both waste away quickly once someone starts avoiding standing. Meanwhile, glycated (sugar-stiffened), chronically inflamed connective tissue handles steady compression less well than the same tissue in a metabolically healthy body.

So the standing limit is rarely fixed. It usually moves once the load is spread out and the terrain is addressed. That is why the plan here includes both, not an injection alone.

Frequently asked questions

Why can I walk farther than I can stand still?

Walking cycles the load and briefly unloads each side. Standing still holds one position under constant compression. Many facet patients report exactly this, and it is a useful detail.

The mechanism is covered in lumbar facet syndrome.

Does a cane or cart help?

Often substantially, and using one is not a defeat. It buys the flexion (forward bend) that opens the canal. Use it to extend your distance. Then work on the conditioning that reduces the need.

Is standing all day at work making it worse?

It is loading the structures that hurt. Whether it is causing damage is a different question, and usually the answer is no. But tolerance is real, and a job that exceeds it daily will keep the problem active.

Why does my back hurt when I stand but not when I sit?

Standing tips the lower spine backward into extension. That squeezes the small facet joints at the back of the spine. It also narrows the canal the nerves run through. Sitting bends the spine forward, which opens the canal and takes load off the facets, so the relief is often immediate. That reversal is a clue: a disc-driven back usually does the opposite and hurts more sitting.

Why does it hurt so much to stand up from a chair?

Rising from a chair moves the lower spine from bent forward to upright extension in one motion. That is exactly the load facet joints dislike. In facet-driven back pain, getting out of a chair is often the single worst movement of the day. The pain sits across the low back and may travel into the buttock, but it usually stops around the knee.

How do I know if pain when standing is spinal stenosis?

Stenosis tends to show up in the legs, not only the back. Look for heaviness, burning or weakness in both legs that builds the longer you stand or the farther you walk. It then clears within a minute or two of sitting. Leaning forward helps quickly, and walking uphill feels easier than downhill. Facet pain, by contrast, is limited by time and position, not distance.

What helps lower back pain from standing?

First, settle which structure is driving it, because facet pain and stenosis respond to different things. Facet pain is confirmed with a diagnostic block and treated durably with radiofrequency neurotomy. A cane or cart buys the forward bend that opens the canal. Then rebuild the hip extensors and deep abdominal wall that share the load, and treat the inflamed terrain. The standing limit is rarely fixed.

Related reading

• Spinal stenosis
• Lumbar facet syndrome
• When sitting is the problem instead
• What it quietly took
• Hip arthritis