Home / Conditions / Annular tear
A crack in the tough outer ring of a spinal disc. It is a small injury that can hurt a great deal — because the outer ring is where almost all the disc's nerve endings are.
Each spinal disc has two parts. A soft centre, the nucleus pulposus, which behaves like a thick gel. And a tough outer ring, the annulus fibrosus, made of layered fibres wrapped around that centre like the plies of a tyre.
An annular tear is a crack in that outer ring — which is why it is also called a disc tear or simply a torn disc. It can follow a single event — a lift, a twist — or develop gradually as the disc dries out and stiffens with age. On a radiology report you may instead see annular fissure, which means the same thing.
Tears happen most often in the lower back and the neck, because those are the segments that move most and carry the most load.
The layering is the point. The annulus is built like the plies of a tyre — concentric sheets of fibre running at alternating angles, which is what lets a disc resist twisting as well as compression.
A tear splits those sheets. The one shown runs outward from the centre towards the rim, which is a radial tear — the type that reaches the nerve-rich outer third, and the type a herniation can travel through.
Note how little space separates the disc from the nerve roots beside it, shown in yellow. That proximity is why a tear that stays contained causes back pain, while one that lets the nucleus escape causes pain down a limb instead.
This is the question people arrive with, and the answer is simpler than it sounds.
So a tear can exist without a herniation, but a herniation cannot happen without a tear first. That is why the two produce different pain: a tear hurts in the back, while a herniation more often causes pain, numbness or weakness down a limb — sciatica in the leg, or nerve pain further down.
The inner part of a disc has almost no nerve supply. The outer third of the annulus has a great deal — and it is precisely that outer third which tears.
This explains the pattern people describe. Pain that is deep, central and hard to point to. Pain that is worse sitting than standing, because sitting loads the front of the disc. Pain on bending forward, and a sharp catch on coughing, sneezing or straining, all of which briefly raise the pressure inside the disc.
Small tears frequently cause no symptoms at all, which matters more than it sounds — see below.
They are classified by direction, and the direction determines whether you feel it.
Runs outward from the centre of the disc towards the rim. If it reaches the outer third, where the nerves are, it becomes painful — and it is the type through which a herniation can occur.
Splits between the layers of the ring, curving around the disc rather than across it. Typically caused by twisting under load.
A horizontal tear in the outer fibres near where the disc attaches to the vertebra. Because it sits in the outer, well-innervated zone, it can be disproportionately painful for its size.
Annular tears are common on MRI in people with no back pain at all, and they become more common with age. A scan showing one does not, on its own, prove it is the source of your symptoms.
What links a tear to your pain is whether the level matches your symptoms and your examination. That is a clinical judgement, and it is the reason a report saying "annular tear" is a starting point for the conversation rather than the end of it. Treating the wrong level is a real risk when the scan is read without the person.
Rarely, a large disc herniation presses on the bundle of nerves at the base of the spine. Treated quickly the outlook is good. Left for days it can cause permanent loss of bladder, bowel and sexual function.
Call us on +65 8849 0677 and say you have these symptoms. We will see you the same day, arrange urgent imaging, and if surgery is needed it is arranged from here — without going through an emergency department first.
If we are closed, go straight to an emergency department. We are shut on Sundays and after 1pm on Saturdays. This is measured in hours rather than days, so do not wait for us to open.
Call +65 8849 0677Most heal without surgery. The complication is time: a disc has almost no blood supply, so repair is slow — typically weeks to months rather than days. Annular tear treatment is therefore largely about managing that interval well, in steps.
Not rest. Prolonged rest weakens the muscles that support the spine and makes the pain last longer. What helps is reducing the positions that load the disc — prolonged sitting above all — while building the muscles that share the load. Posture and workstation changes do more here than most people expect.
Anti-inflammatories and, for a short period, muscle relaxants where spasm is a large part of the problem. Used to make movement possible rather than as the treatment itself.
Where pain is limiting and not settling, an image-guided injection near the affected level can reduce inflammation enough to allow rehabilitation to proceed. Both diagnostic and therapeutic: the response tells you whether the level you treated is the level responsible.
Surgery does not repair a tear. It addresses what the tear has allowed to happen — most often a herniation pressing on a nerve.
It becomes the question where there is nerve compression with weakness, where pain has not settled after months of proper conservative treatment, or in the emergency situation above. Decompression and discectomy are among Dr Tung's listed procedures.
Most annular tears settle over weeks to months. Once you have had one, that disc is more vulnerable than it was, which is an argument for changing the loading that caused it rather than returning to it once the pain stops.
The commonest reason a tear keeps recurring is that the pain settles, normal activity resumes unchanged, and the same load goes back through the same disc. The rehabilitation matters most in the period after you feel better.
No, but they are related. The tear is a crack in the outer ring. A slipped disc is when the soft centre pushes through that crack. You can have a tear without a herniation; you cannot have a herniation without a tear.
Usually, though slowly. Discs have very little blood supply, so healing takes weeks to months rather than days. That slowness is normal and not a sign that something is wrong.
Possibly, but not automatically. Annular tears appear on scans of people with no pain at all. What matters is whether the level matches your symptoms and examination — which is a clinical judgement rather than a radiology finding.
Briefly, at most. Prolonged rest weakens the muscles supporting the spine and tends to prolong the pain. Reducing the specific loads that provoke it — particularly long periods sitting — helps more than stopping moving.
Usually not. Surgery does not repair the tear itself. It is considered where a herniation through the tear is compressing a nerve, where there is weakness, or where months of proper conservative treatment have not worked.
Call us immediately on +65 8849 0677 — that symptom needs assessing the same day, and we can arrange it. If we are closed, go to an emergency department rather than waiting for us to open. This is one of very few back symptoms measured in hours.
No. Bring any MRI images and reports, and note which positions make it worse, whether pain travels into a limb, and how long it has been going on.
Slipped disc · Lower back pain · Neck pain · Sciatica · Cervical spondylosis · Decompression surgery
If a scan has shown a tear, the useful question is whether it explains your pain. Bring the images rather than only the report.
