"What About Surgical Complications?" — An Honest Conversation

The risk is not zero. But doing nothing carries risks of its own. What matters is understanding both sides so you can make an informed decision.

Last week, we walked through what happens on surgery day. This week, let's address the topic that weighs on many minds — the potential complications of surgery — and talk about them openly and honestly.

There's no such thing as "ignorance is bliss" when it comes to your health. When you understand the real risks, vague fear transforms into clear-eyed understanding.

Why This Conversation Matters

Before surgery, your surgeon will explain the risks during what's called informed consent. When you hear the list, you might think, "They're just trying to scare me."

That's not what's happening.

The goal is to give you accurate information so you can make your own decision with confidence.

Your surgeon has a duty to explain. And you have every right to know.

Common Complications and Their Likelihood

These are complications that can occur with any lumbar spine surgery. Most are rare, and nearly all have established treatments.

Wound Infection (1 to 3%)

• Bacteria enter the surgical wound
• Signs: redness, swelling, warmth, or discharge at the incision site
• Treatment: Antibiotics. In severe cases, a washout procedure
• Prevention: Antibiotics are given before and after surgery, and strict sterile technique is used throughout

Dural Tear / Spinal Fluid Leak (1 to 5%)

• During surgery, a small hole may occur in the membrane (dura) surrounding the spinal nerves
• Spinal fluid can leak through, sometimes causing a headache
• Treatment: Most heal on their own with bed rest. Rarely, a repair procedure is needed
• Important: This is not a surgical failure. The dura is an extremely thin membrane, and in areas of severe stenosis, it can be firmly stuck to the surrounding bone, making a small tear sometimes unavoidable

Temporary Worsening of Symptoms (a few percent)

• Pain or numbness may temporarily increase right after surgery
• Cause: Mild swelling of the nerves from the surgical handling
• Most cases improve within days to weeks
• This is the point that worries patients the most, but a temporary flare-up is very different from a permanent problem

Bleeding (Transfusion needed: less than 1%)

• Blood loss during surgery is usually small (roughly 100 to 300 ml)
• The need for a blood transfusion is very rare
• If a blood clot (hematoma) forms after surgery and presses on the nerves, emergency surgery to remove it may be needed

Deep Vein Thrombosis (DVT) / Pulmonary Embolism

• Blood clots can form in the leg veins during the recovery period
• Rarely, a clot can travel to the lungs (pulmonary embolism) — a serious complication
• Prevention measures (used for every patient):
  • Compression stockings
  • Pneumatic compression devices (intermittent cuffs that gently squeeze the legs)
  • Early mobilization (this is one of the reasons you're encouraged to walk the next day)
  • Blood-thinning medication when appropriate

Risks Specific to Fusion Surgery

If your procedure includes spinal fusion, there are additional considerations.

Implant-Related Issues (a few percent)

• Screws may loosen or rods may break over time
• Most cases cause no symptoms and are simply monitored
• Rarely, a second surgery is needed

Adjacent Segment Disease

• The segments above and below the fused area bear extra stress
• Years or even decades later, the neighboring discs may deteriorate
• Rate: Roughly 2 to 3% per year — so over 10 years, 20 to 30% of patients show some changes on imaging
• However, not everyone with these changes develops symptoms

Non-Union (Pseudarthrosis)

• Fusion surgery requires the bones to grow together, but sometimes they don't fully unite
• Risk factors: smoking, diabetes, poor nutrition
• This is one of the key reasons quitting smoking matters so much

Special Considerations for Patients Over 80

More and more older patients are having spine surgery, and age alone does not disqualify anyone. However, there are additional risks to be aware of.

Postoperative Delirium (14 to 27%)

• A temporary state of confusion after surgery
• The patient may be disoriented about time or place, agitated, or saying things that don't make sense
• It's temporary — most cases resolve within a few days
• Family members: this can be alarming, but try not to panic

Medical Complications

• Pneumonia (especially in patients with a smoking history)
• Urinary tract infection (related to catheter use)
• Heart or circulatory issues (in patients with existing conditions)

Yet Surgery Can Still Be the Right Choice

Avoiding surgery indefinitely in an older patient can lead to:

• Further decline in walking ability, raising the risk of becoming bedbound
• Falls leading to fractures
• Reduced activity leading to cognitive decline

"Too old for surgery at 80" is a misconception. When overall health allows it, surgery can dramatically improve quality of life.

How to Think About Risk

It's natural to feel uneasy when you see these numbers. But to understand risk clearly, you need to compare the risks of surgery with the risks of doing nothing.

Risks of Surgery

Risks of Not Having Surgery

Making Sense of the Numbers

When someone says "3% infection rate," try thinking about it this way:

If 1,000 people had this surgery, 970 would have no infection at all. Of the 30 who did, the vast majority would be treated successfully with antibiotics.

A stated probability is not a coin flip between "it happens" or "it doesn't." The overwhelming majority of patients recover without complications.

What You Can Do to Lower Your Risk

You have more power than you might think.

If a Complication Does Occur

Even if a complication arises, proven treatments exist.

• Infection — antibiotics, or a washout procedure if needed
• Dural tear — rest, or surgical repair in rare cases
• Hematoma — emergency surgical removal
• Blood clot — anticoagulation therapy

Hospitals that perform spinal surgery are equipped to handle these situations. Rather than worrying "what if something goes wrong," take comfort in knowing that if it does, there's a clear plan in place.

Key Takeaways

• Complications are rare, but not zero — understanding them honestly is what matters
• Infection 1-3%, dural tear 1-5%, complete paralysis less than 0.5% — most are treatable
• Fusion surgery carries additional risks (adjacent segment disease, implant issues)
• Older patients can still benefit from surgery when overall health permits
• The risk of not having surgery is real too — compare both sides before deciding
• Quitting smoking, building fitness, and getting up early after surgery are things you can do to tip the odds in your favor