Kyphoplasty vs Vertebroplasty: Two Fixes for Spinal Fractures, Compared

The bag of potting soil weighed twelve pounds. That was all it took. A woman in her seventies bends to lift it, feels something give in her mid-back, and spends the next month unable to roll over in bed without gasping. No fall, no car accident — just a vertebra that quietly crumbled under a load it once handled without complaint.

Scenes like this play out roughly 1.5 million times a year in the United States, most of them tied to osteoporosis. When rest and time aren’t enough, two minimally invasive procedures come up in nearly every conversation: vertebroplasty and kyphoplasty. They sound interchangeable. They aren’t quite.

The honest story here is more interesting than a simple winner-and-loser verdict — it involves a balloon, a controversy that rattled spine medicine in 2009, and a truth patients deserve to hear: fixing the fracture is not the same as fixing the bone.

Why does a broken vertebra hurt so much?

A vertebral compression fracture isn’t a clean snap like a broken wrist. Picture a soda can crushed from above: the front of the vertebral body collapses, the bone compacts on itself, and the vertebra ends up shorter than it was — sometimes wedge-shaped. Every time you sit up, twist, or take a step, the fractured surfaces shift against each other. That micro-motion is a large part of why these fractures can be so relentlessly painful.

Osteoporosis drives most of them. When bone density falls far enough, the spine can fracture under everyday loads — lifting groceries, a hard sneeze, stepping off a curb. Some fractures cause little or no pain and turn up only later on an X-ray taken for another reason. Others are disabling for weeks.

The stakes go beyond pain. Each collapsed vertebra tips the spine slightly forward, and multiple fractures can stack into a rounded upper back and measurable height loss. A forward-flexed posture compresses the chest and abdomen, which is one reason untreated multiple fractures are linked with reduced lung capacity and diminished mobility in older adults.

Most compression fractures do heal on their own, typically over 6 to 12 weeks. The procedures in this article exist for the fractures that don’t settle down — or for the people who can’t safely wait that long in severe pain.

What exactly is vertebroplasty?

Vertebroplasty is the older and simpler of the two procedures, first performed in France in the mid-1980s. Under live X-ray guidance (fluoroscopy), a physician passes a hollow needle through a small nick in the skin — often just a few millimeters — and into the fractured vertebral body, usually through a bony channel called the pedicle.

Acrylic bone cement, mixed to roughly the consistency of toothpaste, is then injected directly into the broken bone. Because the cement must flow through compacted bone, it goes in under relatively high pressure. Within about 10 to 20 minutes it hardens, creating an internal cast that locks the fracture fragments in place. The theory is straightforward: stop the micro-motion, and much of the pain stops with it. The cement’s curing process also generates heat, which some researchers believe may quiet local pain nerves, though that mechanism remains debated.

A single-level vertebroplasty commonly takes around 30 minutes. Most patients receive local anesthesia with light sedation rather than general anesthesia — a meaningful advantage for frail or medically complex patients. Many go home the same day after an hour or two lying flat while the cement fully sets.

No hardware, no stitches beyond an adhesive bandage, no bone removed. What vertebroplasty does not do, by design, is restore the height the vertebra lost when it collapsed. The bone is fixed in its compressed shape.

What is kyphoplasty, and how is it different?

Kyphoplasty, developed in the late 1990s, follows the same playbook with one added act. Before any cement is injected, the physician threads a small balloon — formally a balloon tamp — through the needle into the collapsed vertebra and inflates it. The balloon does two things at once: it compacts the surrounding bone outward, creating a cavity, and it can partially lift the collapsed vertebra back toward its original height.

The balloon is then deflated and removed, and cement fills the cavity it left behind. Because the cement is flowing into an open space rather than being forced through crushed bone, it can be mixed thicker and injected at lower pressure. That single mechanical difference explains most of kyphoplasty’s claimed advantages: less cement escaping where it shouldn’t, and a chance — not a guarantee — of restoring a few millimeters of vertebral height and reducing the forward wedge angle.

The trade-offs are practical. Kyphoplasty typically takes longer, often 45 to 60 minutes per level. It is more frequently done under general anesthesia, though sedation-based approaches are common too. The balloon equipment makes it the more expensive procedure, and in some settings it involves a short hospital stay where vertebroplasty would be purely outpatient.

The name hints at the ambition: kyphos is Greek for the forward hump that stacked compression fractures create. Whether the modest height gains achieved in practice translate into better posture or breathing is, as we’ll see, less certain than the marketing of the early 2000s suggested.

Kyphoplasty vs vertebroplasty at a glance

Side by side, the two procedures differ less in what they achieve and more in how they get there. Here is the comparison most patients are actually looking for:

Feature	Vertebroplasty	Kyphoplasty
Core technique	Cement injected directly into fractured bone	Balloon creates a cavity first, then cement fills it
Anesthesia	Usually local with sedation	Sedation or general anesthesia
Time per vertebra	Roughly 30 minutes	Roughly 45–60 minutes
Cement injection pressure	Higher (thinner cement)	Lower (thicker cement into a cavity)
Cement leakage on imaging	More common — reported in 40% or more of levels, though usually silent	Less common — often reported near 10–25%
Height restoration	Minimal by design	Modest — typically a few millimeters
Relative cost	Lower	Higher, due to balloon equipment
Pain relief in comparative trials	Broadly similar	Broadly similar

Two caveats keep this table honest. Leakage figures vary widely between studies depending on how carefully investigators looked — CT scans catch leaks that plain X-rays miss. And “broadly similar pain relief” is the consistent finding of head-to-head trials and pooled analyses, not a claim that any individual patient will do equally well with either. Fracture shape, timing, bone quality, and a patient’s fitness for anesthesia all tilt the decision one way or the other.

Which is better, kyphoplasty or vertebroplasty?

Neither — at least not across the board, and any clinician who tells you otherwise is simplifying. When researchers have compared the two directly, including in randomized trials, pain relief and functional improvement have come out roughly equivalent. If pain reduction is the goal, and for most patients it is, the evidence does not crown a winner.

Where daylight appears is in the secondary details. Kyphoplasty’s cavity-first technique reliably reduces cement leakage in study after study, and it can recover some vertebral height, which matters more for severely collapsed or wedge-shaped fractures. Vertebroplasty counters with speed, lower cost, and the ability to be done comfortably under local anesthesia — no small thing for a 90-year-old with heart disease.

So the real question isn’t “which procedure is better” but “which procedure fits this fracture and this patient.” A few patterns from clinical practice:

• A markedly collapsed, recent fracture in a patient who can tolerate a longer procedure often points toward kyphoplasty.
• A frail patient for whom anesthesia risk dominates the conversation may be better served by vertebroplasty.
• For a straightforward, mildly compressed fracture, the two approaches likely deliver comparable results, and local expertise and access reasonably drive the choice.

In my read of the evidence, the choice between these two procedures matters far less than two other decisions: whether cement augmentation is appropriate at all for a given fracture, and what gets done afterward about the fragile bone that broke in the first place. Both deserve their own sections — and get them below.

Wait — does either procedure actually work? The 2009 controversy

Here is the part many comparison articles skip. In 2009, the New England Journal of Medicine published two randomized trials in which patients with painful osteoporotic fractures received either real vertebroplasty or a convincing sham procedure — same room, same needle placement sensations, same cement smell, but no cement injected. Both groups improved, and improved about equally. The spine world was stunned; use of the procedures dropped sharply in the following years.

The story didn’t end there. Critics noted that the trials enrolled some patients with older fractures and only moderate pain — exactly the fractures most likely to heal on their own. Later trials that selected differently told a different story. VERTOS II, published in 2010, compared vertebroplasty with conservative care in patients whose fractures were recent, severely painful, and confirmed active on imaging; vertebroplasty came out ahead on pain relief. Subsequent studies and pooled analyses have landed in a middle zone: benefit appears most plausible in acute, imaging-confirmed, severely painful fractures, and least plausible in older or milder ones.

What should a patient take from a decade of dueling trials? Three things. First, the placebo response in pain procedures is real and large, so humility is warranted. Second, patient selection is everything — an MRI showing bone swelling (edema) at the fracture helps confirm the fracture is actually the pain generator. Third, professional societies still endorse both procedures for appropriately selected patients, precisely because the better-designed selective trials showed meaningful benefit. Uncertainty remains, and pretending otherwise serves no one.

What are the drawbacks of kyphoplasty?

Kyphoplasty’s balloon buys real advantages, but it collects real costs, and patients ask about them for good reason.

• More anesthesia exposure. Kyphoplasty is more often performed under general anesthesia, which carries its own risks in older adults — the very population most likely to need the procedure.
• Longer and costlier. The extra step adds operating time, and the balloon system makes kyphoplasty substantially more expensive than vertebroplasty. Insurance coverage varies, and out-of-pocket exposure is worth clarifying in advance.
• Height restoration often underdelivers. The balloon can lift a freshly fractured vertebra, but bone that has begun healing in its collapsed shape resists correction. Gains are typically a few millimeters, and studies have struggled to show that this modest lift changes posture, breathing, or daily function in ways patients can feel.
• Balloon-specific risks. Inflation can crack the vertebra’s endplate — the thin plate of bone bordering the disc — or push fracture fragments in unintended directions. These events are uncommon but unique to kyphoplasty.
• It shares every generic risk of cement augmentation. Cement leakage (less often than vertebroplasty, but not never), infection, bleeding, nerve irritation, rare cement migration into veins, and the possibility of new fractures at neighboring levels.

None of these drawbacks is a reason to dismiss kyphoplasty. They are reasons to ask a specific question at your consultation: “For my particular fracture, what does the balloon add that justifies the extra time, cost, and anesthesia?” A good answer will be specific to your imaging, not generic.

What are the risks of vertebroplasty?

Vertebroplasty’s dominant risk is cement going where it wasn’t sent. Because the cement is injected under pressure through compacted bone, some of it commonly escapes through fracture lines or into small veins. Imaging studies detect leakage in a striking share of treated levels — figures of 40% and higher appear in the literature when investigators look with CT.

That number sounds alarming, so context matters: the overwhelming majority of leaks cause no symptoms whatsoever. The cement hardens in a harmless spot and stays there. Problems arise in the uncommon cases where cement reaches a nerve root or the spinal canal, causing pain or neurologic symptoms, or enters the venous system and travels to the lungs — a cement embolism. Symptomatic complications in osteoporotic fracture treatment are reported in the low single digits percentagewise, and serious ones are rarer still.

Other risks apply to both procedures:

• Infection at the needle site or, rarely, in the bone itself
• Bleeding, particularly relevant for patients on blood thinners, which usually must be managed around the procedure
• Rib or pedicle fracture from positioning or needle passage in very fragile bone
• An allergic-type reaction to cement components, which is rare
• New compression fractures at adjacent levels in the months that follow

Careful technique blunts most of these risks: high-quality fluoroscopy, cement mixed to the right viscosity, and a low threshold to stop injecting the moment cement drifts toward a vein or the canal. Experience counts — a fair question for any proceduralist is how many of these they perform in a typical year.

Is kyphoplasty a permanent fix?

For the treated vertebra, essentially yes. Acrylic bone cement does not dissolve, soften, or get absorbed by the body. Once hardened, it functions as a permanent internal cast, and the stabilized vertebra rarely re-collapses. Patients do not return years later to have cement replaced the way a hip implant might eventually need revision.

But “permanent fix” hides a trap in its wording. Kyphoplasty fixes one broken bone. It does nothing to the osteoporosis that broke it — and that disease is still at work in every other vertebra in the spine. Studies consistently find that roughly 10 to 20% of patients suffer a new vertebral fracture within a year of cement augmentation, most often at a level adjacent to the treated one.

Whether the cement itself contributes to those adjacent fractures has been argued for two decades. A cemented vertebra is stiffer than its neighbors, and some biomechanical models suggest it transfers extra load to the softer bone above and below. Other analyses point out that people who fracture once are simply at high risk of fracturing again, cement or no cement — one in five women with a vertebral fracture sustains another within a year even without any procedure. The honest summary: the association is real, the causation is unsettled, and the practical response is the same either way.

That response is treating the underlying bone disease. A kyphoplasty without a follow-up osteoporosis plan is a patched tire on a car with no brakes — the repair is sound, but the next problem is already on its way.

Is vertebroplasty safe for the elderly?

Generally, yes — in fact, older adults are the population these procedures were largely built for, since osteoporotic compression fractures cluster in people over 65. Several features make vertebroplasty particularly suited to frail patients.

The anesthesia burden is light. Most vertebroplasties use local numbing plus mild sedation, sparing patients the cardiovascular and cognitive risks that general anesthesia can pose in advanced age. The procedure is short, blood loss is negligible, and the skin opening is small enough to close with an adhesive strip. Most patients are walking within hours.

There’s also a case that the procedure can be protective in the right patient. Weeks of bed rest carry their own well-documented dangers for older adults — muscle loss, pneumonia, blood clots, pressure injuries, accelerated bone loss, and delirium. For someone whose fracture pain has effectively immobilized them, a 30-minute procedure that restores mobility may be considerably safer than the alternative of prolonged immobility. Observational studies have generally reported favorable safety profiles for cement augmentation in patients well into their 80s and 90s.

Safety still has to be assessed one person at a time. Points that deserve attention in an older patient’s evaluation:

• Ability to lie face-down for the duration of the procedure, which heart or lung disease can complicate
• Blood-thinning medications, which usually require a managed pause
• Any sign of infection, which must be excluded first
• Whether the fracture is genuinely the pain source, confirmed by exam and imaging

Age by itself is not a disqualifier. Untreated frailty of the plan around the procedure is the bigger hazard.

Who is a good candidate — and who isn't?

Given the 2009 trial saga, patient selection is where these procedures are won or lost. The candidates most likely to benefit share a recognizable profile.

• A recent fracture — generally within weeks to a few months — rather than one that has already healed in place
• Severe, function-limiting pain localized to the fracture level, often reproduced by pressing on that spot
• Imaging confirmation that the fracture is active, typically MRI showing bone marrow edema (or a bone scan when MRI isn’t possible)
• Inadequate relief from conservative care, or pain so disabling that weeks of waiting would itself be dangerous — for instance, a frail patient confined to bed

Equally important is the list of people for whom cement augmentation is a poor idea or outright contraindicated:

• Fractures that have already healed — cementing old bone rarely relieves pain, and the sham trials suggest this group drove much of the disappointing data
• Fractures with bone fragments pushed back into the spinal canal or with spinal cord compression, which need a different surgical conversation
• Active infection, whether in the spine or bloodstream
• Uncorrectable bleeding disorders
• Pain that examination and imaging trace to arthritis, disc disease, or muscle strain rather than the fracture itself

One practical implication: an MRI before any cement procedure is not bureaucratic box-checking. It is the single best tool for separating the fracture that will respond from the one that won’t. If a procedure is offered without imaging that confirms an active fracture, asking why is entirely fair.

What happens during the procedure — and how long is recovery?

Both procedures follow a similar rhythm. You lie face-down on a padded table in a procedure suite equipped with fluoroscopy. After numbing medication and sedation take effect, the physician makes an opening in the skin only a few millimeters wide and, watching the live X-ray image, guides the needle into the fractured vertebra. Cement injection itself takes only minutes; most of the procedure time goes to precise needle placement. For kyphoplasty, the balloon inflation and removal happen between those two steps.

Afterward, you lie flat for one to two hours while the cement finishes curing. Most people treated for osteoporotic fractures go home the same day, though an overnight stay is sometimes planned, more often with kyphoplasty or when several levels are treated at once.

Recovery tends to be quick when the procedure works. Many patients notice meaningful pain relief within 24 to 48 hours — some describe it on the recovery table — while others improve gradually over a week or two. Soreness at the needle site is normal for a few days. Typical guidance includes:

• Walking as soon as the same evening, which is encouraged rather than merely allowed
• Avoiding heavy lifting, deep bending, and twisting for several weeks
• Resuming ordinary daily activities within days as comfort allows
• Following up on physical therapy if prescribed, particularly for balance and back-extensor strengthening

A useful expectation to carry in: these procedures aim to relieve fracture pain and restore mobility. They are not promised cures, and a minority of patients get partial or little relief — usually because some of the pain was coming from somewhere other than the cemented bone.

What if you skip both? How conservative care compares

Here is a fact that should anchor every consultation: most vertebral compression fractures heal without any procedure at all, typically over 6 to 12 weeks. The bone knits, the inflammation quiets, and pain recedes. For a substantial share of patients, the right treatment is patience with support.

Conservative care usually combines several elements. Pain is managed with medications chosen by your clinician — the specifics belong in that conversation, not this article. Short-term relative rest gives way, as quickly as tolerated, to walking and gentle activity, because prolonged bed rest actively harms older bodies. Back braces are sometimes offered; the evidence for them is genuinely mixed, with some studies showing comfort benefits and others showing little effect, so a brace is a reasonable trial rather than a requirement. Physical therapy focused on posture and back-extensor strength has better support, especially for preventing the next fracture.

How does waiting compare with cementing? The trial evidence, read fairly, says this: for moderate pain or older fractures, conservative care performs about as well over time — that’s the lesson of the sham-controlled studies. For acute, severe, imaging-confirmed fractures, cement augmentation relieved pain faster and better than conservative care in trials like VERTOS II.

Timing creates a genuine tension. Wait too briefly and you may cement a fracture that would have healed fine on its own; wait too long and the window in which the procedure helps most may narrow, while an older adult loses strength to weeks of pain-limited inactivity. Many clinicians land on a middle path — a few weeks of well-supported conservative care, with earlier intervention for patients whose pain is disabling or whose health can’t absorb the wait.

The fracture gets fixed — the bone disease doesn't

If this article changes one thing about your next appointment, let it be this: whichever procedure you choose, or even if you choose neither, a vertebral compression fracture is a loud alarm about your skeleton. In medical terms, a low-trauma vertebral fracture generally establishes an osteoporosis diagnosis on its own — and it roughly quadruples the risk of another vertebral fracture. About one in five women with a new vertebral fracture will sustain another within a year if the underlying disease goes unaddressed.

Yet studies of real-world care repeatedly find that a large share of fracture patients leave the episode with no bone evaluation and no prevention plan. The cement gets placed; the osteoporosis gets ignored. That gap is arguably a bigger problem than anything separating kyphoplasty from vertebroplasty.

A complete follow-up plan usually includes:

• A bone density scan (DEXA) to stage the osteoporosis and set a baseline
• Laboratory work to screen for treatable contributors, such as vitamin D deficiency or thyroid and parathyroid conditions
• A discussion of bone-strengthening medications — effective options exist, and which one fits you is a decision for you and your clinician
• Nutrition review, with attention to adequate calcium and vitamin D intake and enough protein to maintain muscle
• Weight-bearing and resistance exercise, plus balance training, which reduces fall risk
• A home fall audit — loose rugs, poor lighting, and bathroom hazards cause a remarkable share of fractures

Cement can stabilize the vertebra that already broke. Only the prevention plan protects the twenty-plus vertebrae that haven’t.

When should you see a doctor about back pain after a fracture — or a suspected one?

Compression fractures are easy to miss because they masquerade as ordinary back strain, especially when there was no dramatic injury. Some situations warrant a prompt medical visit rather than watchful waiting.

Make an appointment soon if you notice:

• Sudden mid- or lower-back pain after a minor strain, lift, or even a hard cough — particularly if you’re over 50, have osteoporosis, or have taken long-term steroid medications
• Back pain that hasn’t clearly improved after two to three weeks of self-care
• Height loss of more than about an inch and a half over the years, or a newly rounding upper back — both can signal silent fractures
• Pain severe enough to keep you in bed or off your feet, which is itself dangerous for older adults

Seek emergency care — do not wait for an appointment — if back pain comes with any of the following:

• New numbness, tingling, or weakness in the legs
• Loss of bladder or bowel control, or new difficulty urinating
• Fever or chills alongside the back pain, which can signal spinal infection
• Back pain after a significant trauma such as a fall from height or a vehicle crash

Those red flags point to possible spinal cord or nerve involvement or infection — conditions where hours matter and where neither kyphoplasty nor vertebroplasty is the answer.

For everyone else, the path is simpler than it sounds: an examination, an X-ray, often an MRI, and then a genuinely two-sided conversation about time versus cement. Now you know the questions to bring to it.

Frequently asked questions

Which is better, kyphoplasty or vertebroplasty?

Neither is proven better overall — comparative trials show roughly similar pain relief. Kyphoplasty leaks less cement and can restore a few millimeters of vertebral height, which may matter for severely collapsed fractures. Vertebroplasty is faster, less expensive, and easier to perform under local anesthesia, an advantage for frail patients. The better choice depends on your specific fracture, your fitness for anesthesia, and your physician’s assessment — not on a universal ranking.

What are the drawbacks of kyphoplasty?

The main drawbacks are more anesthesia exposure, longer procedure time, and higher cost due to the balloon equipment. Height restoration is often more modest than patients expect — typically a few millimeters — and hasn’t consistently been shown to improve posture or function. Kyphoplasty also shares the general risks of cement procedures: leakage, infection, nerve irritation, and possible new fractures at neighboring vertebrae. It does nothing to treat the underlying osteoporosis.

Is kyphoplasty a permanent fix?

For the treated vertebra, yes — bone cement doesn’t dissolve or wear out, and the stabilized bone rarely re-collapses. But it is not a permanent fix for your spine as a whole. The osteoporosis that caused the fracture continues in every other vertebra, and roughly 10 to 20% of patients suffer a new fracture within a year. Lasting protection comes from treating the bone disease itself, not from the cement.

Is vertebroplasty safe for the elderly?

Generally yes — older adults are the primary population for this procedure, and studies report favorable safety in patients into their 80s and 90s. Vertebroplasty typically needs only local anesthesia with light sedation, takes about 30 minutes, and gets patients walking within hours, avoiding the serious risks of prolonged bed rest. Individual evaluation still matters: heart and lung conditions, blood thinners, and the ability to lie face-down all need review beforehand.

How long does recovery take after kyphoplasty or vertebroplasty?

Most patients go home the same day and walk within hours. When the procedure works, meaningful pain relief often arrives within 24 to 48 hours, though some people improve gradually over a week or two. Needle-site soreness lasts a few days. Doctors typically advise avoiding heavy lifting, deep bending, and twisting for several weeks while encouraging walking right away. Physical therapy for posture and back strength often follows.

Does the cement ever leak, and is that dangerous?

Cement leakage is common on imaging — reported in 40% or more of vertebroplasties and roughly 10–25% of kyphoplasties — but the overwhelming majority of leaks cause no symptoms at all. Problems are uncommon and occur when cement reaches a nerve root, the spinal canal, or veins leading to the lungs. Symptomatic complications in osteoporotic fracture treatment are reported in the low single digits, and careful technique under live X-ray keeps serious events rare.

Can a compression fracture heal without surgery?

Yes — most vertebral compression fractures heal on their own within 6 to 12 weeks. Conservative care combines clinician-guided pain management, early walking as tolerated, sometimes a brace, and physical therapy. Trials suggest this approach works about as well as cement procedures for moderate pain or older fractures. Cement augmentation is generally reserved for recent, severe, imaging-confirmed fractures that leave patients disabled despite conservative treatment.

How soon after a fracture should kyphoplasty or vertebroplasty be done?

The procedures work best on recent, active fractures — generally within weeks to a few months of injury, confirmed by MRI showing bone edema. Cementing an already-healed fracture rarely relieves pain. Many clinicians first try a few weeks of conservative care, moving to a procedure sooner if pain is disabling or if immobility itself endangers the patient. Timing is individualized, which is why early evaluation and imaging matter.

Will kyphoplasty straighten my posture?

Only modestly, if at all. The balloon can lift a freshly collapsed vertebra by a few millimeters and reduce its wedge angle, but studies haven’t consistently shown that this translates into visibly straighter posture or better breathing. Fractures that have started healing resist correction entirely. If a rounded upper back is your main concern, the more effective long-term strategy is preventing additional fractures through osteoporosis treatment and back-extensor strengthening.

Can new fractures happen after cement augmentation?

Yes. Roughly 10 to 20% of patients sustain a new vertebral fracture within a year, often at a level adjacent to the treated one. Whether the stiff cemented vertebra transfers extra load to its neighbors or whether these patients were simply destined to fracture again remains debated — one in five women with a vertebral fracture refractures within a year even without a procedure. Either way, the answer is the same: treat the underlying osteoporosis.

References

• Kyphoplasty — MedlinePlus Medical Encyclopedia
• Osteoporosis — NIH National Institute of Arthritis and Musculoskeletal and Skin Diseases

This article is for general information only and is not a substitute for professional medical advice. Please consult a qualified doctor about your individual situation.