| Patient Guide
A Quick Guide to Spinal MRIs
What your scan shows, and what it doesn’t. Most of the alarming-sounding terms on an MRI report describe an ageing spine rather than a damaged one.
Start Here
Why MRI Findings Are So Often Misunderstood
MRI is excellent at showing structure, but pain is influenced by far more than structure alone. Study after study has found that people with no back pain at all have the same findings on their scans as people in considerable pain. That does not mean your pain is imaginary. It means the scan is answering a narrower question than most people assume.
Tap a structure, or use the buttons, to see what may be involved.
Most Scans, Most Findings
Disc bulges, degeneration and annular tears are near-universal here after middle age, and correlate poorly with pain.
The Numbers
What the Scans of Pain-Free People Look Like
This is the clearest way to see the point above. Every person counted below was scanned while having no back pain at all. Move the slider to your age.
Brinjikji et al., American Journal of Neuroradiology, 2015 — systematic review of 33 studies covering 3,110 people with no symptoms.
What this does and does not mean
It does not mean your scan is irrelevant, or that nothing is wrong. It means these findings are so common in people without pain that finding one does not, by itself, explain yours.
A report describes your anatomy. It does not describe your pain. Reasoning the two together, alongside an examination, is the job.
The Terms
What the Words on Your Report Actually Mean
These are the findings that worry people most, and what each one really describes:
Disc Bulge
A disc extending slightly beyond its usual boundary. Very common in people without any back pain, and it does not mean a disc has slipped.
Disc Herniation or Protrusion
A disc changing shape and sticking out a little. It can irritate a nerve early on, but its presence does not predict ongoing pain, and most reduce in size naturally.
Degenerative Disc Disease
Not a disease, despite the name. It usually describes normal disc dehydration with age, is seen in most adults, and correlates poorly with pain or disability.
Spondylosis
A general term for spinal ageing. It reflects normal joint and disc adaptation and does not mean the spine is fragile.
Spondylolisthesis
One vertebra sitting slightly forward of another. Often stable for many years, and most low-grade cases do not worsen.
Annular Tear
A small split in the outer layer of a disc. Common even in people without back pain, and it does not mean the disc is torn apart or unstable.
When It Matters
When a Scan Is Genuinely Important
MRI is often unnecessary for routine or persistent back pain. It becomes important when serious pathology is suspected. These are rare, but they must not be missed:
Spinal Infection
Uncommon, but requires urgent identification and treatment.
Cancer or Metastatic Disease
Particularly relevant with a previous cancer history.
Fracture
Especially after trauma, or in the context of osteoporosis.
Inflammatory Spinal Disease
Where the pattern suggests inflammation rather than mechanical pain.
Cauda Equina Syndrome
A surgical emergency. Bladder or bowel change and saddle numbness are the warning signs.
Severe or Progressive Nerve or Cord Compression
Where weakness or numbness is worsening rather than settling.
What Next
What to Do With Your Result
A scan is information, not a verdict. What matters is what happens next:
When to Seek Help
Red Flags — Don’t Ignore These
Most presentations are straightforward. These features are the exceptions, and warrant prompt assessment:
⚠ Seek Medical Advice If You Notice
- Unexplained weight loss
- Fever, chills, or severe persistent night pain
- A history of cancer, particularly breast, prostate, lung or kidney
- Progressive weakness or numbness
- Changes in bladder or bowel control
- Saddle numbness — numbness around the groin or inner thighs
- New sexual dysfunction
If any of these apply, contact your GP or seek urgent medical care rather than waiting for a physiotherapy appointment.
Common Questions
Frequently Asked Questions
My scan says degeneration. Is my spine wearing out?
Degenerative change is present in the majority of adults, including those with no symptoms at all. It describes your age more accurately than it describes your prognosis.
If the scan looks bad, should I avoid exercise?
No, and this is the most costly misunderstanding. Structural change is not the same as fragility. Spines are adaptable at every age, and loading them appropriately improves tolerance rather than causing harm.
My scan is normal but I am still in pain. What does that mean?
That your pain is real and the scan was answering the wrong question. MRI shows structure; it cannot show nervous system sensitivity, muscle coordination, or how your system is interpreting threat. Those often matter more in persistent pain.
Should I ask for a scan?
Usually not for routine back pain, because findings are common in people without symptoms and often increase worry without changing treatment. Where any of the warning signs above are present, imaging is important.
What is persistent pain?
Pain lasting beyond three months, past the point at which tissues have had time to heal. In many cases it is no longer driven by tissue injury but by changes in how the nervous system processes and protects against perceived threat. It is very treatable.
Bring Your Report In
If you have a scan result you do not understand, bring it to your appointment. Going through it properly, alongside an examination, usually turns something worrying into something workable.
Book Your Initial AssessmentThis page is for general information only and isn’t a substitute for individual medical advice. If you’re experiencing any of the warning signs above, contact your GP or seek emergency medical care as appropriate.