Radiology glossary

Spondylosis — What It Means on Your Report

Part of: Spine findings, explained

Full explainer: Spondylosis — What It Means on Your Report

The spine shows age-related wear — arthritis of the spinal joints, essentially. 'Spondylosis' is radiology shorthand for the degenerative package: disc wear, bone spurs (osteophytes), facet joint arthritis, and thickened spinal ligaments, usually described by region ('cervical spondylosis' for the neck, 'lumbar spondylosis' for the lower back). It is not a single disease but a summary word, and it is not the same as 'spondylitis' — which means inflammatory arthritis and is a different condition entirely. By middle age, some degree of spondylosis is nearly universal, and most of it is silent: the word appears on countless reports of people with no symptoms. It earns attention only through its consequences — when the wear narrows the canal (stenosis), tightens the foramina around nerve roots, or pairs with instability. On its own, 'spondylosis' is background music, not the headline.

What it means on CT

CT maps the bony elements of spondylosis beautifully: the size and direction of spurs, facet joint overgrowth, and foraminal narrowing from bone. When a surgeon needs to know exactly which bony structures are crowding a nerve, CT provides the measurements. It is less informative about the cord and soft tissues than MRI.

What radiologists look at next

The radiologist inventories the spondylotic elements level by level — disc height loss and desiccation, anterior and posterior osteophytes, facet arthropathy with joint space narrowing and overgrowth, ligamentum flavum thickening — and then, crucially, scores the consequences: central canal stenosis grade, foraminal narrowing grade (often mild/moderate/severe per foramen), and any cord compression or signal change in the neck. They distinguish spondylosis (wear) from spondylitis (inflammation) explicitly when the distinction matters, and note instability or spondylolisthesis when present. The consequences section is the report's real message; the inventory is context.

Where it commonly shows up

• cervical spine
• lumbar spine
• thoracic spine
• C5-C6
• L4-L5

Questions to ask your doctor

• Which parts of the spondylosis could be related to my symptoms?
• Is this spondylosis just background wear, or is it causing my symptoms?
• Is there any stenosis or foraminal narrowing, and does it match where I feel things?
• Is there any cord compression or signal change (for neck findings)?
• How do we distinguish this from inflammatory spondylitis?
• What symptoms would warrant re-imaging sooner?
• Does the wear pattern suggest anything about activity or posture?

Common questions

Is spondylosis the same as spondylitis?

No — and the similar names cause real confusion. Spondylosis is wear-and-tear arthritis of the spine, extremely common with age. Spondylitis (as in ankylosing spondylitis) is an inflammatory autoimmune condition, much less common, with different imaging signs and different management. If your report says spondylosis, it means wear, not inflammatory disease.

Will spondylosis get worse?

The wear progresses slowly with age, but symptoms often do not track the images — many people's necks and backs feel the same or better over the years while the films show more wear. Doctors monitor how you function, not how the inventory grows.

Does cervical spondylosis cause headaches?

It can contribute to neck-related headaches in some people, but headaches have many causes and the spondylosis on the scan is often incidental. Your doctor considers the headache pattern, examination, and other causes before attributing it to the spine.

My report says 'severe spondylosis.' Should I panic?

No. 'Severe' describes the amount of wear visible — big spurs, marked narrowing — not your prognosis. Plenty of severe-looking spondylosis is painless, and what matters is whether nerves or the cord are affected. Ask your doctor about the consequences section of the report, not the adjectives on the wear.

Can cervical spondylosis cause dizziness?

Neck wear is sometimes blamed for dizziness, but the connection is controversial and dizziness has many more common causes — inner-ear problems, blood pressure shifts, medication effects, and dehydration. Do not assume the spondylosis on your scan explains lightheadedness; your doctor will evaluate dizziness on its own terms, considering the far more likely culprits first and only then weighing whether the neck plays any role.

What each test can miss

Where CT can mislead

CT's pitfall is bony exaggeration: spurs and facet overgrowth look formidable in 3D, but CT cannot show whether the nerve inside the foramen is actually suffering. Foraminal measurements on CT are useful but imperfect — the foramen's contents are MRI's domain.

How radiologists tend to phrase it

The lines below are fictional illustrations of common report phrasing — not real patient reports.

Cervical spondylosis with moderate bilateral foraminal stenosis at C5-C6.

Neck wear with the nerve exit doorways moderately tightened on both sides at the C5-C6 level — the most common symptomatic pattern of cervical spondylosis.

Multilevel spondylotic changes without significant central canal stenosis.

Wear at several levels, but the main canal is not meaningfully narrowed. The 'without' clause downgrades the whole inventory to background.

Spondylosis with facet arthropathy as the predominant feature.

The small paired joints at the back of the spine are the main site of arthritis. Facet-predominant spondylosis tends to cause aching stiffness rather than nerve symptoms.

No spondylitis changes identified.

Explicitly ruling out the inflammatory lookalike — no bone marrow edema pattern suggesting inflammatory arthritis. The radiologist is distinguishing wear from inflammation, which matters because they are managed differently.

What your doctor might do next

Spondylosis alone rarely triggers action — your doctor will file it as the expected background and focus on whether the report describes consequences: stenosis, foraminal narrowing touching a nerve, or instability. Bring your symptom pattern (neck versus arm symptoms? worse with certain positions?) because that is what separates consequential spondylosis from incidental. If the report mentions cord compression or signal change in the neck, that deserves a direct question at your visit — it is the one spondylosis consequence with real urgency. Otherwise, ask which of the listed changes your doctor considers relevant to you, and what would warrant re-imaging: new radiating pain, weakness, or gait changes are the usual triggers, not the calendar.

This is general information only — talk to your doctor about what it means for you.

Related conditions

• Degenerative Disc Disease — What It Means on Your Report
• Facet Arthritis — What It Means on Your Report
• Bone Spur — What It Means on Your Report