A badly ruptured disc is actually more likely to be reabsorbed?

For those who've come in after seeing a white lump on an MRI screen

Key points in 30 seconds

1. The body often clears away a ruptured disc on its own. And badly ruptured discs are cleared more readily. When a fragment had broken off, it shrank in 96% of cases.
2. The reason is location. While it's inside the outer layer, the body can't reach it; once it comes out, immune cells recognize it as foreign material and clear it away.
3. Even people with perfectly fine backs often show disc changes on an MRI. What decides on surgery is not so much the size of the lump as the symptoms showing up in your legs right now.
4. Clearing it takes time, and that time isn't unlimited. Wait for a set period, and check at the set point whether it's getting better.
5. If you have trouble urinating or with bowel movements, numbness where a saddle touches, or feet that are steadily getting weaker, don't wait. A surgical assessment is needed right away.

What we often hear

• "They said my disc ruptured. I have to get it pushed back in to get better, right?"
• "They said it's sticking out a lot. Does that mean surgery is the only option?"
• "I keep picturing the MRI image, and I'm afraid to move my back."
• "They say I can just wait, but until when?"

Think back to the day you went to hear your results. Between the vertebrae, a white lump bulges out toward the back, and you hear, "Your disc has ruptured."

From then on, only one picture stays in your head: that thing has to be pushed back in, and pushing it back in must mean surgery.

Today, we'd like to change that picture a little.

Set the screen aside for a moment

Here's something we often say in the clinic: "If you scan anyone, me included, everyone turns up at least one disc."

Even people whose backs don't hurt at all often show bulging or protruding discs on an MRI. So a large lump on the screen doesn't automatically mean surgery. What decides it is the symptoms showing up in your legs and body right now.

When this order gets flipped, you end up with worries you didn't need, and rushing decisions you didn't need to make.

The more it ruptures, the more it shrinks?

Yes. It runs against intuition, so everyone is surprised the first time they hear it.

There's an analysis pooling 31 studies and 2,233 people in which disc patients treated without surgery had repeat MRIs after some time. Here are the rates at which discs shrank on their own, by condition.

Disc condition	Shrank on its own
Slightly bulging, outer layer and all	13%
Inner material protruding	41%
Broken through the outer layer	70%
Ruptured fragment broken off	96%

The rate of disappearing completely was also higher in the more severe cases: 43% for broken-off fragments and 15% for ruptures through the outer layer. As far as reabsorption goes, "it ruptured badly" turned out to be not such bad news after all.

The study sources and surgery comparison trials are written up in the disc surgery post.

Things in a drawer, and trash outside the gate

Why is that? It's easy to see if you think of garbage collection.

The disc's inner material sits inside a tough outer layer, where blood vessels don't reach. It's like something kept in a drawer inside the house: even when the garbage truck comes, it can't be picked up.

But once it breaks through the outer layer, things change. The fragment ends up where blood vessels pass. It's as if it's been put out past the front gate. Then the body's cleaners, immune cells, recognize it as something out of place and break it down and clear it away bit by bit.

The more that has come out, the more has been put out past the gate, and the better it gets collected.

Three things you should still know

First, it takes time. In the clinic, we say, "A ruptured disc usually settles down. It just takes a long time." How long varies from person to person. What's really hard is the pain during that period.

Second, the speed it shrinks and the speed it stops hurting can differ. Sometimes the image has improved but it still hurts; sometimes the image hasn't changed but you feel better first. That's why we judge by records of symptoms and function rather than images.

Third, waiting should also have an end. There's research showing that if leg pain has stayed the same for months or is getting worse, putting off a surgical consultation can actually cost you. So when we wait, we set a period and check at that point whether things are improving.

If you have these signs, we don't wait

• You have trouble urinating or with bowel movements, or it's become hard to hold them in
• The area that touches a bicycle seat (buttocks, groin, inner thighs) has gone numb
• Weakness in your ankles or toes is steadily getting worse

The nerve may be badly compressed, so this isn't a situation for waiting on reabsorption. If you come to us, we'll tell you the same thing and refer you right away to a place where you can get a surgical assessment.

While you wait, the part we take on

First, we check. We examine for the signs above and for leg strength and sensation. If needed, we confirm the disc's location and shape with MRI in partnership with the radiology clinic on the 2nd floor of the same building. This is also where we rule out other problems that cause similar symptoms, such as spinal stenosis.

Second, we make that time bearable. We ease leg pain and tension around the lower back with acupuncture and pharmacopuncture (herbal acupuncture), and, within the limits of what the nerve check allows, work on stiff movement with Chuna (Korean manual therapy). In a recent trial that divided 216 people with long-standing leg pain from a disc into real and sham acupuncture, the real acupuncture group had more reduction in leg pain, and the difference remained a year later. We also tell you its limit: it was done in one country, in chronic patients only. So you're not just lying in bed, we also make a plan together for walking and keeping up daily life as far as the pain allows.

Third, we check with records. Before treatment we note your leg pain score, how far down the numbness goes, how long you can walk without resting, and leg strength, and compare them at each set point. If things aren't heading in a better direction, we don't repeat the same treatment; we guide you to the next path, including a surgical consultation.

What changes

Instead of days when your heart sinks every time the MRI image comes to mind, days when you check a record showing you walked a few more minutes than yesterday.

Living your daily life through that time while your body clears the disc. That's what we're aiming for.

How fast it's reabsorbed and how recovery goes differ from person to person depending on the disc's shape and location and how long it has hurt.

Today's takeaway

A ruptured disc often doesn't need to be pushed back in. It needs you to wait well while your body clears it. Being told it ruptured badly doesn't mean surgery. But if you have any of the three signs above, don't wait.

There are two things to try today. If you've had an MRI, keep the radiology report (the written explanation of the results). And write down just three lines.

• Your leg pain, out of 10
• How far down the numbness goes
• How many minutes you can walk without resting

With the report and these three lines, we can decide together based on your symptoms rather than the screen. If surgery has been recommended to you, you can also use the questions in the post on questions to ask about stenosis surgery as they are.

For questions or appointments, message us in English through the messenger at the bottom right of the page, or call +82-53-716-1175.

References

1. Chiu CC et al. The probability of spontaneous regression of lumbar herniated disc: a systematic review. Clinical Rehabilitation. 2015;29(2):184-195.
2. Bailey CS et al. Surgery versus conservative care for persistent sciatica lasting 4 to 12 months. New England Journal of Medicine. 2020;382(12):1093-1102.
3. Tu JF et al. Acupuncture vs sham acupuncture for chronic sciatica from herniated disk: a randomized clinical trial. JAMA Internal Medicine. 2024;184(12):1417-1424.