A spinal injection places anti-inflammatory medication precisely where a nerve is inflamed, using X-ray guidance. It is a day-care procedure, and for the right patient it can settle severe pain without any surgery at all.
What it is actually for
When a disc presses on a nerve root, much of the pain comes from inflammation around that nerve. An injection delivers a strong anti-inflammatory directly to that spot — far more precisely, and at far lower total dose, than tablets could.
It has a second, underrated use: diagnosis. If numbing a specific nerve root abolishes your pain, that confirms which level is responsible. This is genuinely valuable when a scan shows changes at several levels and it is not obvious which one is causing the symptoms.
Who it helps most
- Sciatica from a disc prolapse, where the pain is severe but there is no weakness
- Nerve pain that is preventing sleep or work while the disc heals naturally
- Patients who want to avoid or delay surgery
- Patients unfit for surgery, or who wish to postpone it
- Cases where the responsible level needs to be confirmed before any operation
What actually happens
You lie on an X-ray table. The skin is numbed. Using live X-ray guidance, a fine needle is advanced to the exact target and the medication is delivered. The procedure itself takes around fifteen to twenty minutes. Most people go home within a few hours and walk out unaided.
Being honest about the limits
An injection treats inflammation. It does not remove a disc fragment, widen a narrowed canal, or stabilise a slipping vertebra.
Relief varies widely: some patients get lasting improvement as the disc settles in the meantime; others get weeks of relief; a minority get little. Injections are also not the answer when there is progressive weakness — that needs decompression, not anti-inflammatory medication.
Used well, an injection is a valuable step between physiotherapy and surgery. Used as a substitute for proper assessment, it just delays the right treatment.
Concerned about back or neck pain? Dr. M.D.S. Sasidharan offers endoscopic, minimally invasive and non-fusion spine care at Iswarya Hospital, OMR, Chennai. Book a consultation to find out whether you can avoid surgery altogether.
Frequently Asked Questions
Are spinal injections painful?
The skin is numbed first, so most patients feel pressure rather than sharp pain. The procedure takes about fifteen to twenty minutes and is done as a day-care procedure — most people walk out and go home within a few hours.
How long does a spinal injection last?
It varies considerably. Some patients get lasting relief because the underlying disc settles during the window the injection provides; others get several weeks of improvement; a minority get little benefit. It works best for inflammatory nerve pain rather than mechanical instability.
Can a spinal injection help me avoid surgery?
Often, yes. By controlling nerve inflammation it can carry you through the period in which the disc herniation naturally reabsorbs, avoiding an operation. However, it cannot substitute for surgery where there is progressive weakness or significant instability.