Injections cure back pain
'My colleague had one injection and he's been pain-free for three years.' He said it as if placing an order. He expected the same result. I didn't want to deflate him — but I needed him to understand what an injection can and can't do.
What Patients SayMy doctor referred me for steroid injections. I've heard these can cure back pain permanently. Is that true, or are they just a temporary fix?
Where Did This Come From?
Steroid injections have a genuine role in spine care, and patients who experience dramatic relief from a well-placed injection naturally believe they've been cured. The pain disappears. The leg pain resolves. It feels transformative. So the word spreads: "Get an injection — it fixed my back."
What the patient often doesn't know, and what takes some explaining, is that the injection suppressed the inflammation that was amplifying their pain — and in many cases, the underlying structural issue hasn't changed at all. When the steroid effect wears off, the inflammation can return. That's not a failure of the injection; it's just what injections are designed to do.
What the Science Actually Says
Epidural steroid injections (ESIs) — the most common type for back and leg pain — work by delivering a corticosteroid to the epidural space around the affected nerve or disc, reducing local inflammation and pain signalling. The evidence shows they provide meaningful short-term relief (weeks to a few months) for radicular pain (leg pain from nerve compression) — they're more effective for this than for back pain alone.
Long-term evidence is less impressive. Multiple studies show that at 1 year, differences in outcomes between injection and placebo groups are small. The injection doesn't "cure" the structural problem causing the inflammation. What it can do is break a pain cycle, provide a window for rehabilitation, help with functional recovery, and in some cases allow the underlying disc herniation time to reabsorb. Injections are also not infinitely repeatable.
Guidelines generally recommend no more than 2–3 injections per spinal level per year, due to concerns about cumulative steroid effects on local tissues and bone density. They are a tool — a useful one — not a cure.
The Verdict
Injections provide real, meaningful short-term relief for many patients. They don't cure the underlying structural problem. They're a valuable tool in the management toolkit — not a permanent fix.
What To Do Instead
- Discuss with your doctor specifically: what type of injection, what you should expect, and what the plan is if it helps (or doesn't)
- Use the pain-free window after an injection to engage with physiotherapy — this is when it's most productive
- Don't rely on repeated injections indefinitely as the primary management strategy — if you need injections repeatedly, the underlying cause needs addressing
- Ask about image-guided injections (fluoroscopy or CT guidance) — blind injections have lower accuracy
Yellow Flags — Worth Monitoring
- Injections that provided no relief at all — this is actually useful diagnostic information and should be discussed with your clinician
- Injections that work briefly and need repeating frequently — the underlying cause needs proper attention
Red Flags — Get Checked Immediately
- After an injection, severe worsening of pain, fever, or neurological deterioration — possible infection or haematoma, seek urgent assessment
- Multiple injections at the same level within months — discuss risk and alternatives with your clinician
- Pinto RZ et al., "Epidural corticosteroid injections in the management of sciatica: a systematic review and meta-analysis," Annals of Internal Medicine, 2012. Carette S et al., "Epidural corticosteroid injections for sciatica due to herniated nucleus pulposus," NEJM, 1997.