Written by Ansu Susan Kuriakose, BPT · Clinically reviewed by Jasmal K, BPT, MPT · Last reviewed 5 October 2026
Do I need an MRI for back pain?
When your back hurts, an MRI can feel like the obvious next step: surely seeing inside will explain the pain? Often, it doesn't, and for many people it doesn't change treatment. But there are times when a scan really matters. This guide explains the difference.
Book a Spine Assessment · or call or WhatsApp +91 99950 09403
When you need a scan urgently
For most back pain, a scan doesn't improve recovery
A 2009 review of randomised trials compared people with low back pain who had routine, immediate imaging (X-ray, MRI or CT) with people who didn't. When there were no signs of a serious cause, routine imaging didn't improve pain, function or other outcomes. The authors advised against routine immediate scans for recent back pain without warning signs.
Why scans can be confusing
Disc changes are common in people without pain. A large 2015 review found disc bulges on scans in about 30% of 20-year-olds with no back pain, rising to about 84% of 80-year-olds. Disc degeneration was seen in about 37% of 20-year-olds without back pain, rising to about 96% of 80-year-olds.
But they're not meaningless. A second review found that, in adults aged 50 or under, disc changes were more common in people with back pain than without.
Scans don't always match recovery. In a major sciatica trial, scans a year later showed a disc herniation in about a third of people, whether or not they had recovered.
So an MRI report saying "disc bulge" or "degenerative changes" doesn't by itself explain your pain, or predict how you'll do.
When an MRI is useful
- Warning signs of a serious cause (see above)
- Leg weakness that's getting worse, or numbness that's spreading
- Severe sciatica that isn't improving with non-surgical care, especially if surgery is being considered. The UK's NICE guideline says surgery may be considered for sciatica when non-surgical treatment hasn't helped and MRI findings match the symptoms.
- When the result would change your treatment
Scans at Maana Spine
You don't need a scan to book a spine assessment, and you don't need a doctor's referral. Your physiotherapist will look at your history, symptoms and how your spine and nerves respond to testing. If a scan would help, they'll recommend an MRI or X-ray. If you already have reports, bring them; your physiotherapist will review them with you.
What happens at your spine assessment
Spine assessments are available at all five Maana Spine clinics in Kochi, Kozhikode, Thiruvananthapuram, Aluva and Perinthalmanna. The consultation fee is ₹250, and no doctor's referral is needed.
Book a Spine Assessment · or call or WhatsApp +91 99950 09403
Frequently asked questions
Should I get an MRI for sciatica?
Not usually at first, unless you have warning signs or worsening weakness. An MRI is usually considered if severe sciatica isn't improving, or if surgery is being considered.
My MRI shows a disc bulge. Is that why I'm in pain?
Possibly, but not necessarily. Disc bulges are common in people with no pain. Your symptoms and examination matter as much as the scan.
Is an X-ray enough for back pain?
X-rays show bones, not discs or nerves. For most back pain without warning signs, neither an X-ray nor an MRI is needed at first.
Can a physiotherapist order an MRI?
At Maana Spine, your physiotherapist will recommend an MRI or X-ray if it would help.
Will an MRI help me recover faster?
For most back pain without warning signs, research shows routine scans don't improve recovery.
References
- Chou R, Fu R, Carrino JA, Deyo RA. Imaging strategies for low-back pain: systematic review and meta-analysis. Lancet, 2009;373(9662):463–472. doi.org/10.1016/S0140-6736(09)60172-060172-0)
- Brinjikji W, et al. Systematic literature review of imaging features of spinal degeneration in asymptomatic populations. American Journal of Neuroradiology, 2015;36(4):811–816. doi.org/10.3174/ajnr.A4173
- Brinjikji W, et al. MRI findings of disc degeneration are more prevalent in adults with low back pain than in asymptomatic controls. American Journal of Neuroradiology, 2015;36(12):2394–2399. doi.org/10.3174/ajnr.A4498
- el Barzouhi A, et al. New England Journal of Medicine, 2013. nejm.org
- National Institute for Health and Care Excellence (NICE). Low back pain and sciatica in over 16s (NG59). nice.org.uk/guidance/ng59
- Royal Free London NHS Foundation Trust. Cauda equina syndrome: patient information. royalfree.nhs.uk