Vertebral Compression Fracture: Why a Cough Can Break a Spine — and What Cement Actually Does

What this video covers

• Why weak trabecular (spongy inner) bone collapses under everyday loads, and where the pain signal comes from
• How bone cement splints tiny motion at the fracture line, and how kyphoplasty differs from vertebroplasty
• What the placebo-controlled trials and the Cochrane review really found, including the trials that showed no benefit
• The narrow group that did benefit in the one positive double-blind trial: fresh fractures under six weeks old with severe pain
• The named risks, how long relief lasts, and why many fractures settle on their own in 6 to 12 weeks
• Why cement does not treat osteoporosis, and which follow-up therapy actually lowers your risk of the next fracture
• Cement extravasation, at times into the epidural space or a neural foramen with spinal cord or nerve root injury; pulmonary cement embolism, rarely fatal; infection; bleeding; rib or pedicle fracture; and sedation or anesthesia risk.
• Does cement raise the risk of a new fracture at the level above or below? That is still debated. The 2019 ASBMR Task Force found the evidence too thin and could not rule out harm.
• Benefit, when it happens, is measured in weeks to months. Most untreated osteoporotic fractures settle within 6 to 12 weeks without any procedure.
• Cement does not treat osteoporosis. Anti-resorptive or anabolic therapy (drugs that slow bone loss or build bone), calcium and vitamin D, a DXA scan, and steps to prevent falls are what lower the odds of the next fracture.
• MEDICAL DISCLAIMER: This content is for educational purposes only and is not medical advice. It does not substitute for professional diagnosis or treatment. Always consult a licensed healthcare provider regarding your condition. Viewing this video does not establish a doctor-patient relationship.

In an older adult with thin bone, sudden midline back pain after a cough, a lift or a step off a curb is a vertebral compression fracture until an image says otherwise. Osteoporosis strips away the vertebra’s inner cross-braces first. So the front of the bone buckles under a load it once carried easily.

You coughed. Or you bent for a laundry basket, or stepped off a curb — and something in the middle of your back gave way. Now you cannot stand up straight. Someone pressed on your back, said “muscle strain,” and handed you a prescription. In an older adult with thin bone, sudden pain in one spot along the midline of the back after a small load is a vertebral compression fracture until an image says otherwise. A muscle strain does not make one bony bump on the spine so tender you can find it with one fingertip. A muscle strain does not make you shorter. This article explains how a vertebra fails under a load it used to carry easily. It explains why that causes the pain you feel and what bone cement does inside the bone. And it covers what the controlled trials do and do not support.

Why can a cough break a vertebra?

A vertebral body is not a solid block of bone. It is a thin cortical shell — the hard outer shell — wrapped around a lattice of trabeculae, the inner struts and cross-braces that carry load the way the truss of a bridge does.

In osteoporosis, that lattice does not thin evenly. The horizontal cross-braces go first, which leaves the upright struts standing unsupported over longer and longer spans. Any engineer will tell you what happens next. A column with no braces buckles at a fraction of the load it once handled.

That is why a cough is enough. The load did not increase. The structure fell below it.

When the failure comes, it comes at the front. The anterior column — the front part of the vertebral body — collapses first. So the bone wedges into a triangle instead of crushing flat.

Why does a compression fracture hurt, and why do you stoop forward?

The pain most likely comes from two things: micro-motion at the fracture line, and marrow edema, the fluid response inside the bone as it fails. That mechanism is inferred, not directly demonstrated — it is the best explanation we have, not a measured fact, and it should be stated that way.

What can be shown is the shape. The front of the vertebra collapses and the back does not. So the bone wedges and your upper body tips forward. Your center of gravity moves ahead of your spine, which means every vertebra above and below the broken one now carries more load than it was built for. That is the mechanical logic behind the forward stoop and the loss of height. It is also why standing upright now feels like work instead of something that just happens.

It also explains the single-fingertip finding. The tenderness is not spread across a band of muscle. It sits over one spinous process (the bony bump you feel on your spine), because one structure broke.

What the standard approach misses — in two opposite directions

This fracture gets failed twice, often on the same afternoon, in two directions that look nothing alike.

First by silence. You get medicine, you get sent home, and no one names the disease that broke your spine. No bone density scan. No talk about why a cough was enough. The fracture is treated as an event, not as the alarm bell of a deeper condition.

Then by speed. You are shown a plain X-ray in a hallway and offered cement that week. No MRI. No proof that the painful level is the broken level. No lab work. A plain X-ray cannot tell you whether the fracture is fresh or years old. It cannot tell you what caused it.

That last point matters more than anything else on this page, because not every collapsed vertebra is osteoporotic. Cancer that has spread (metastatic cancer), myeloma, and infection can all collapse a vertebral body. On MRI they look nothing alike:

• Osteoporotic collapse wedges the body but keeps the back wall flat and leaves the pedicles alone.
• Tumor bulges that back wall outward and eats into the pedicle.
• Infection crosses the disc and destroys the endplates on both sides of it.

Those are three different pictures and three different treatments. A plain X-ray shows you none of them.

When is a compression fracture an emergency?

Some findings take this out of the elective-procedure talk entirely. New leg weakness, new numbness, or any change in bowel or bladder control is an emergency and a surgical question — seek care immediately, not next week. And fever, weight loss you cannot explain, night pain that will not let you lie down, or any history of cancer all need to be worked up before anyone uses the word cement.

Medicine to control symptoms has a real role in the first weeks. What it does not do is tell you which vertebra broke, whether it is still active, or why your bone failed in the first place. Those are three separate questions, and they need three separate answers.

What do vertebroplasty and kyphoplasty do inside the bone?

Vertebroplasty places a needle into the broken vertebral body under live X-ray (fluoroscopy) — usually through the pedicle, the bony bridge that joins the back of the vertebra to its body. In the narrow pedicles of the upper thoracic spine, the approach runs just outside the pedicle instead.

Through that needle goes polymethyl methacrylate, a surgical bone cement. It locks into the remaining trabecular lattice and hardens into an internal splint that stops tiny motion. Whether it also acts on nerve endings inside the bone is hypothesis, not an established mechanism.

The honest framing is: splint, not repair. Cement does not rebuild bone, and it does not restore the lattice that failed.

Kyphoplasty adds a balloon tamp. The balloon is inflated inside the vertebral body first, so cement can fill a ready-made space at lower pressure. It often restores some vertebral height on the X-ray. Here is the part that usually gets left out: that height gain has not been shown to improve pain or function. The 2019 American Society for Bone and Mineral Research Task Force report found the evidence insufficient to favor kyphoplasty over vertebroplasty, or over nonsurgical care. (Established position of a major specialty task force.)

Maybe you want the procedure details — how the level is chosen, what the day involves, what the imaging looks like. That detail lives on the vertebroplasty for compression fractures treatment page.

What the trials actually show — stated honestly

This is one of the most disputed procedures in interventional pain. You deserve to hear the negative results before the positive one.

The pooled placebo-controlled evidence is negative. The 2018 Cochrane review by Buchbinder and colleagues pooled five placebo-controlled trials totaling 541 participants, at high-to-moderate certainty, and found no clinically important benefit of vertebroplasty over a sham procedure — regardless of how long the pain had been present. (Established finding, high-to-moderate certainty controlled data.)

A major specialty task force declined to endorse routine use. The 2019 ASBMR Task Force report by Ebeling and colleagues reached three conclusions. Routine vertebral augmentation is not supported by current evidence. In acutely painful vertebral fractures, vertebroplasty provides no demonstrable clinically significant benefit over placebo. And the evidence is insufficient to favor kyphoplasty over vertebroplasty or over nonsurgical care. It also found the data on new fractures and serious adverse events limited, and could not rule out harm. (Established position; the harm question is explicitly unresolved.)

One blinded trial did separate — in a very narrow population. VAPOUR, published by Clark and colleagues in The Lancet in 2016, was truly double-blind and placebo-controlled. It enrolled a specific group: one or two fractures less than six weeks old, with pain of at least 7 out of 10. In that group, 44% reached a pain score below 4 at 14 days, against 21% on placebo.

Now be exact about where that number sits, because this is where most summaries mislead. VAPOUR is one of the five placebo-controlled trials pooled inside the 2018 Cochrane review. Cochrane looked at fractures under six weeks old on their own and still found no clinically important difference. The sham trials were not wrong, and there is no honest way to pretend they were.

The defensible position is narrower than “cement works,” and it is this: if you do not look like VAPOUR’s patients, cement has not been shown to help you. (Contested territory — presented as contested, deliberately.)

What this means for your evaluation

Here is the order that has to happen. Cement is the last item, not the first.

1. Red flags first — imaging and labs before cement

Fever, unexplained weight loss, night pain, cancer history, and any new nerve change get worked up before augmentation is even discussed.

2. Proof the fracture is active

An MRI with fluid-sensitive sequences, which shows marrow edema (fluid inside the bone) — the sign of a fracture that is still live. If you cannot go into a scanner, a nuclear bone scan with SPECT is the other path. Either way, the edema has to sit at the level your finger finds when you point to where it hurts. A fracture that is plain on an X-ray but quiet inside the bone is not the source of today’s pain.

3. The differential, read off the MRI

Osteoporotic wedge versus tumor versus infection, as described above. This is the step a plain X-ray cannot do for you.

4. Time and conservative care — but on a clock

Pain control, bracing where it fits, and controlled movement. Most untreated fractures settle within six to twelve weeks on their own. That is a real fact that few people appreciate, and it argues strongly for patience.

But waiting has a cost too, and it cuts the other way. The one trial that ever showed a difference enrolled patients inside six weeks. So if your pain is severe and recent, and you still cannot move with good pain control at two to three weeks, that is the decision point — not week ten.

5. Understand the ceiling before you consent

When cement helps, the benefit is measured in weeks to months, not years. It buys a window. It does not end the story, and it does not change what happens to the rest of your skeleton.

Know the risks by name

• Cement extravasation — cement escaping the vertebral body, at times into the epidural space or a neural foramen (a nerve exit hole), with spinal cord or nerve root injury.
• Pulmonary cement embolism — cement traveling to the lungs. This is rare, and it has been fatal.
• Infection.
• Bleeding.
• Rib or pedicle fracture.
• Sedation and anesthesia risk.
• Adjacent-level fracture — whether cement raises the odds of a fracture at the level above or below remains debated and unsettled. The 2019 ASBMR report found the evidence limited and could not rule out harm. It should not be stated as a definite risk. It should not be waved off as no risk either.

The fracture is the alarm, not the fire

Cement does not treat osteoporosis. This is the single most important clinical sentence on this page. A splinted vertebra is one repaired symptom in a skeleton that is still losing structure.

What changes the odds on the next fracture is different work entirely: a DXA bone density scan, anti-resorptive or anabolic therapy, calcium and vitamin D, and deliberate steps to prevent falls at home. Do not start, stop, or change any medication without consulting your physician.

One more thing, because you will find it online tonight. Ketones, fish-oil-derived resolvins, and red-light panels do not mineralize bone and have never been tested against a vertebral fracture. They are add-ons and unproven for this condition. Where metabolic health is truly poor, it is worth treating for its own sake. A physician should tell you exactly what is being treated and what is not. None of it replaces a DXA scan and a drug that changes bone turnover.

An honest picture of a good outcome

What follows is a composite — a picture assembled from many patients with this condition, not one person’s chart.

An older adult, thin-framed, who fractured at the thoracolumbar junction (where the mid-back meets the low back) reaching into a dryer. Two weeks of medicine brought constipation, confusion and little relief. MRI showed marrow edema at a single level, matching where she pointed. Lab work was reassuring. Augmentation was performed, and within days she could reach the bathroom without help.

And that sentence should not be allowed to do more work than it deserves. In VAPOUR, one in five people who received the placebo procedure improved on the same timeline. Did the cement do that for her, or was she going to turn the corner that week anyway? That cannot be known — not by her physician and not by anyone else.

The relief was partial. Building back how long she could stand took months, not days. For months she was afraid any movement would break something else, and that fear cost more function than the fracture did. Her bone density scan came back worse than expected, and therapy meant appointments and side effects. Nobody could promise her there would never be another fracture. Her spine stopped being an emergency and became a condition she managed. Individual results vary.

Frequently asked questions

Our Locations page has the address, hours and directions.

Key takeaways

• Osteoporosis thins the horizontal cross-braces of the trabecular lattice first and leaves the upright struts unsupported. That is why a cough can break a vertebra that a heavy lift once could not.
• The front column fails first. So the bone wedges, you tip forward, and every level above and below carries more load. Pain is blamed on tiny motion and marrow edema, an inference rather than a proven fact.
• Cement is a splint, not a repair, and the evidence is disputed. Pooled placebo-controlled trials and the 2019 ASBMR Task Force found no clinically important benefit. One double-blind trial found benefit only in recent, severe, imaging-confirmed fractures under six weeks old.
• Not every collapsed vertebra is osteoporotic. Tumor and infection look different on MRI and identical on a plain X-ray. Any new leg weakness, numbness, or bowel or bladder change is an emergency.
• Cement does not treat osteoporosis. The DXA scan, bone-turnover therapy, and fall prevention are what change the odds on the next fracture.

This article is educational and is not a substitute for evaluation, diagnosis, or treatment by a physician. Individual results vary. Do not start, stop, or change any medication without consulting your physician. To have sudden back pain properly imaged and diagnosed before any procedure is scheduled, call (314) 481-5000 or text (314) 886-5902.

References

1. Buchbinder R, Johnston RV, Rischin KJ, Homik J, Jones CA, Golmohammadi K, Kallmes DF. Percutaneous vertebroplasty for osteoporotic vertebral compression fracture. Cochrane Database Syst Rev. 2018;4(4):CD006349. PMID 29618171. PubMed
2. Clark W, Bird P, Gonski P, Diamond TH, Smerdely P, McNeil HP, Schlaphoff G, Bryant C, Barnes E, Gebski V. Safety and efficacy of vertebroplasty for acute painful osteoporotic fractures (VAPOUR): a multicentre, randomised, double-blind, placebo-controlled trial. Lancet. 2016;388(10052):1408-1416. PMID 27544377. PubMed
3. Ebeling PR, Akesson K, Bauer DC, Buchbinder R, Eastell R, Fink HA, Giangregorio L, Guanabens N, Kado D, Kallmes D, Katzman W, Rodriguez A, Wermers R, Wilson HA, Bouxsein ML. The Efficacy and Safety of Vertebral Augmentation: A Second ASBMR Task Force Report. J Bone Miner Res. 2019;34(1):3-21. PMID 30677181. PubMed

Medically reviewed by Dr. Gurpreet Singh Padda, MD, MBA, MHP — Board Certified in Anesthesiology, Pain Medicine, Interventional Pain Management, Addiction Medicine, and Obesity Medicine. Last reviewed July 2026.

Dr. Gurpreet Singh Padda, MD, MBA, MHP