Medically reviewed by Prof. Dr. Aamer Nadeem Chaudhary, M.B.B.S., D.M.R.D., F.C.P.S. (Diagnostic Radiology), Consultant, Al-Nasar Lab & Diagnostic Centre. Updated September 2026.
Quick answer: A spine X-ray shows the bones, alignment and disc spaces. It detects fractures, slippage, scoliosis and degenerative change. It cannot show discs, nerves or the spinal cord, so a slipped disc and a pinched nerve need an MRI. The X-ray takes a few minutes and needs no preparation.
Book a spine X-ray: call 0300 0341944, or ask about portable X-ray at home on 0309 1166944.
What can a spine X-ray actually show?
| Finding | Seen on X-ray? |
|---|---|
| Fracture of a vertebra | Yes, including collapse from osteoporosis |
| Spondylolisthesis (one vertebra slipping forward) | Yes, and flexion and extension views show whether it is unstable |
| Scoliosis and abnormal curvature | Yes, and the angle can be measured for follow up |
| Degenerative change and bone spurs | Yes |
| Narrowed disc space | Indirectly. The gap looks reduced, but the disc itself is not visible |
| Alignment after injury or surgery | Yes, including position of screws and rods |
| Slipped or herniated disc | No. Needs MRI |
| Pinched or compressed nerve | No. Needs MRI |
| Spinal cord problems | No. Needs MRI |
| Early infection or early tumour | Often missed. Needs MRI |
Why can an X-ray not show a slipped disc?
This causes real confusion, so it is worth stating plainly.
X-rays work by absorption. Dense tissue such as bone absorbs the beam and appears white. Soft tissue absorbs very little and appears as undifferentiated grey. The disc, the nerves and the spinal cord are all soft tissue, so they blend into each other.
A radiologist can infer that a disc has degenerated because the space between two vertebrae has narrowed. But whether disc material is pressing on a nerve, and which nerve, and how severely, is simply not answerable from an X-ray. That is an MRI question. See MRI for back pain and slipped disc.
When is a spine X-ray the right test?
- After trauma, to exclude a fracture quickly
- Suspected osteoporotic collapse in an older patient with sudden back pain
- Scoliosis, for diagnosis and for measuring progression over time
- Spondylolisthesis, especially with flexion and extension views to assess stability
- Before and after spinal surgery, to check alignment and implant position
- Assessing overall alignment in a standing position, which MRI cannot do because you lie down for it
- As a quick first look when the clinical question is about bone rather than nerves
When do you need an MRI instead?
Go straight to MRI, or ask your doctor about it, when the problem involves nerves rather than bones:
- Pain radiating down the leg or arm, which suggests nerve root compression
- Numbness, tingling or weakness in a limb
- Symptoms persisting beyond about six weeks despite treatment
- Suspected spinal canal stenosis, typically leg pain on walking that eases on sitting or bending forward
- Suspected infection or tumour, including tuberculosis of the spine, which remains relevant in Pakistan and is often invisible on early X-rays
- Before spinal surgery
Two situations are medical emergencies and need immediate hospital assessment, not an outpatient X-ray: loss of bladder or bowel control with back pain, and numbness around the groin or inner thighs. Rapidly worsening weakness in both legs is the same. Do not wait for a scan appointment in these cases.
See our spine MRI service and the guide to cervical spine MRI for neck pain.
Does most back pain need imaging at all?
No, and this is worth saying clearly because it saves patients money and worry.
Most acute back pain settles within a few weeks with movement, simple pain relief and time. International guidance consistently advises against routine imaging in the first six weeks when there are no warning signs.
There is a specific reason for that. Degenerative changes are extremely common in people with no pain whatsoever. A large share of healthy adults over 40 have disc bulges on MRI and feel nothing. Scanning early therefore often finds something that is not the cause of the pain, which leads to anxiety and sometimes to treatment nobody needed.
Imaging earns its place when there are warning features, when symptoms suggest nerve involvement, or when the pain has not settled as expected.
How to prepare
- No fasting and no injection. You can eat and take medicines normally
- Wear clothing without zips, buttons, hooks or metal over the area. You may be given a gown
- Remove belts, jewellery and anything from your pockets
- Tell the radiographer if you are or might be pregnant, since lumbar spine X-rays involve the pelvis and would usually be deferred. See X-ray radiation safety in pregnancy
- Mention if you cannot stand or lie flat, so positioning can be adapted
- Bring previous X-rays and reports for comparison
The scan takes a few minutes. You will be asked to hold still and sometimes to hold your breath briefly for each view.
Spine X-ray at Al-Nasar Lab
Al-Nasar Lab & Diagnostic Centre has served Lahore since 1996 and holds ISO 15189:2022 accreditation from the Pakistan National Accreditation Council. Cervical, dorsal and lumbar spine X-rays, including standing and flexion and extension views, are available with digital reporting by consultant radiologists.
For patients who cannot travel, portable X-ray at home is available across Lahore, which matters for elderly and bedridden patients. Where the answer needs MRI instead, both are available at our Johar Town campus in the same visit.
See our X-ray service page or contact us to book.
Frequently Asked Questions
Can a spine X-ray show a slipped disc?
No. Discs and nerves are soft tissue and do not appear on X-ray. A narrowed disc space can suggest degeneration, but confirming a herniated disc requires MRI.
How long does a spine X-ray take?
A few minutes for the images themselves. Allow 10 to 15 minutes at the centre including positioning.
Do I need to fast for a spine X-ray?
No. There is no fasting and no injection for a plain spine X-ray.
Should I get an X-ray or an MRI for back pain?
If the concern is a fracture, alignment or scoliosis, X-ray. If there is leg pain, numbness, weakness or pain lasting beyond six weeks, MRI is the test that answers the question.
Is a spine X-ray safe in pregnancy?
Lumbar spine X-rays expose the pelvis and are usually deferred in pregnancy. Always tell the radiographer, and ask your doctor about alternatives such as MRI or ultrasound.
This article is for general information and is not a substitute for medical advice. Please discuss your results with a qualified doctor.
