If an MRI or X-ray has shown spinal degeneration, the research says two things. Degeneration can matter: some findings are more common in people with back pain, and more disc degeneration was linked to a higher risk of disabling back pain over seven years. But degeneration is also extremely common in people with no pain at all, and becomes more common with age. A finding on a scan is not automatically the source of pain. Imaging has to be interpreted alongside symptoms and an examination.
How common is spinal degeneration in people without pain?
Very common. A 2015 systematic review in the American Journal of Neuroradiology by Brinjikji and colleagues pooled 33 studies of spine imaging in 3,110 people who had no back pain. Disc degeneration was present in 37% of 20-year-olds and 96% of 80-year-olds. Disc bulges rose from 30% at age 20 to 84% at age 80, and disc protrusions from 29% to 43%. The reviewers concluded that many degenerative imaging findings are likely part of normal aging rather than a cause of pain.
Does degeneration matter at all?
Yes. A second analysis by Brinjikji and colleagues, also in the American Journal of Neuroradiology in 2015, compared adults with and without back pain across 14 studies and 3,097 people. In adults 50 or younger, several MRI findings were more common in those with back pain, including disc bulge, disc degeneration, disc protrusion, disc extrusion, Modic type 1 changes, and spondylolysis. Other findings, including any Modic change, annular fissures, and spondylolisthesis, were not clearly associated with pain.
Follow-up data point the same way. The Wakayama Spine Study, published in 2025, followed 653 Japanese adults for seven years after a baseline MRI. Each one-grade increase in lumbar disc degeneration was associated with about 14% higher odds of developing disabling chronic low back pain. Age, female sex, higher BMI, and vertebral fractures were also independent risk factors.
The two kinds of evidence do not contradict each other. Degeneration can shift the odds of pain. It does not decide, on its own, whether a given person hurts or why.
What an MRI can, and cannot, tell you
MRI is very good at showing structure. It can identify findings that change management, such as significant nerve compression, stenosis, fracture, infection, or tumor. It is less good at telling you which structure is producing everyday back pain, because many of the same findings appear in people without pain.
Imaging becomes important when:
- A serious condition is suspected, such as fracture, infection, or cancer
- There is progressive weakness or another worsening neurologic deficit
- Significant sciatica or spinal stenosis is being evaluated
- Surgery or another invasive treatment is being considered
- The result is likely to change what happens next
For uncomplicated low back pain, guidelines advise against routine imaging. The UK's NICE guideline recommends not routinely offering imaging in non-specialist settings for low back pain with or without sciatica, and considering it in specialist settings only if the result is likely to change management. The American College of Radiology describes uncomplicated acute low back pain as a benign, self-limited condition that does not warrant imaging, with imaging considered for red flags or when several weeks of care have not helped.
None of this means MRI is unnecessary. It means imaging is one piece of information, interpreted in clinical context.
What else affects who ends up hurting?
Back pain usually reflects several factors at once. Load tolerance and strength, how the hips and trunk share movement, sensitivity of the nervous system, sleep, activity levels, and general health can all influence symptoms. Soft tissue around the spine, including the paraspinal muscles and thoracolumbar fascia, may contribute in some people. Recent research has found measurable fascia differences in groups with low back pain, though not proof that fascia or adhesion is the cause in any one person. We cover that research in thoracolumbar fascia and low back pain.
An old injury that never fully settled can also matter, through altered movement or reduced strength. How much it contributes varies from person to person, and the exam is how we find out.
Function can change even when the scan does not
Degeneration on a scan does not reverse, but pain and function often improve. A 2025 systematic review in Healthcare looked at 20 studies of exercise-based rehabilitation in people with lumbar degenerative disc disease. Hydrotherapy, core stability training, Pilates, and suspension exercise all reduced pain and improved function. In comparisons between exercise types, most showed no clear winner, though suspension training reduced pain more than isolated core stability work.
Every one of those patients still had their degeneration. That is why staying active and building strength remain central to back care, as current WHO and NICE guidance recommends.
What this means for you
A degeneration finding on an MRI or X-ray describes structure. It is not a life sentence, and it is not automatically the reason your back hurts. What matters is how the imaging fits with your symptoms, your examination, and how you respond to care.
If a scan turned up degeneration you did not expect, or your back pain has persisted despite reasonable care, an examination can help sort out what appears clinically relevant. See how we approach chronic low back pain. If shockwave is being considered, our shockwave evidence review covers what it can and cannot do, including the fact that it does not regenerate discs. You can also book a new patient exam.
Lumbar spine X-ray image by Nevit Dilmen, licensed CC BY-SA 3.0, via Wikimedia Commons.
Sources
- Brinjikji W, Luetmer PH, Comstock B, et al. Systematic literature review of imaging features of spinal degeneration in asymptomatic populations. American Journal of Neuroradiology. 2015;36(4):811-816. PMID 25430861. (link)
- Brinjikji W, Diehn FE, Jarvik JG, et al. MRI findings of disc degeneration are more prevalent in adults with low back pain than in asymptomatic controls: a systematic review and meta-analysis. American Journal of Neuroradiology. 2015;36(12):2394-2399. PMID 26359154. (link)
- Iwane N, Hashizume H, Murata S, et al. Lumbar disc degeneration and vertebral fracture at the thoracolumbar junction are risk factors for chronic low back pain with disability: seven years' follow-up of the Wakayama Spine Study. Cureus. 2025;17(5):e84291. PMID 40524991. (link)
- Aali S, Rezazadeh F, Imani F, et al. Effects of exercise-based rehabilitation on lumbar degenerative disc disease: a systematic review. Healthcare. 2025;13(15):1938. PMID 40805971. (link)
- National Institute for Health and Care Excellence. Low back pain and sciatica in over 16s: assessment and management (NG59). (link)
- Expert Panel on Neurological Imaging, Hutchins TA, Peckham M, et al. ACR Appropriateness Criteria: Low Back Pain, 2021 Update. Journal of the American College of Radiology. 2021;18(11S):S361-S379. PMID 34794594. (link)
- World Health Organization. WHO guideline for non-surgical management of chronic primary low back pain in adults in primary and community care settings. 2023. (link)
