CSF leak surgery that didn't work: was it the right operation?

If you're reading this lying down, you're not alone. Many people with a CSF leak can only manage a screen while they're flat, because sitting up brings the headache straight back.

And if you've already been through surgery that was meant to fix it, you may be carrying something heavier than the headache. You were told they'd found it. You put your trust in that, and in the surgeon. And now you're no better, or you're worse, and you're quietly wondering whether the leak was ever where they said it was.

That question deserves a proper answer. This guide explains what kind of operation each kind of leak needs, the warning signs that the operation didn't match the problem, and what you can do now.

What a spinal CSF leak is

Your brain and spinal cord float in cerebrospinal fluid (CSF), held inside a tough membrane called the dura. When the dura is breached, fluid escapes faster than your body can replace it, the pressure around the brain drops, and the brain can sag. That's what causes the classic headache that eases when you lie down and returns when you stand up. The Spinal CSF Leak Foundation lists other common symptoms: neck pain, ringing or muffled hearing, nausea, brain fog and visual changes.

Some leaks start after a needle in the spine, such as a lumbar puncture, spinal anaesthetic or epidural. This is called a post-dural puncture headache. Most settle on their own or after a blood patch, and international guidelines on post-dural puncture headache say you should be followed up until it does. Others have no obvious trigger. That's called spontaneous intracranial hypotension.

Five problems, five different fixes

This is the heart of it. A CSF leak isn't one condition. The UK multidisciplinary consensus guideline (Cheema et al, 2023) and Professor Wouter Schievink's classification describe several distinct kinds, and each one needs a different treatment. Tap each one to see how it's found and what fixes it.

When the operation doesn't match the leak

Here's what a mismatch can look like. Each row is a pattern to look for in your own records.

1. The evidence pointed toA puncture hole in the lower back, after a needle
   →
   But the operation treatedA fistula higher up the spine
2. The evidence pointed toA leak from a nerve root sleeve
   →
   But the operation treatedA tear from a bone spur
3. The evidence pointed toNo leak shown on any scan
   →
   But the operation treatedA fistula
4. The evidence pointed toLow pressure, from a leak
   →
   But the treatment was forHigh pressure, such as Diamox or a shunt

Why does this matter? Because it's a different question from "did the surgery go well". A surgeon can operate skilfully and still do the wrong operation. And if a later operation at the right place fixes the leak, that can be powerful evidence of what should have happened the first time.

How a leak should be found before anyone operates

The basic principle is simple: treat the leak you can show. The 2023 guideline says surgery is considered for people whose symptoms persist and "in whom a causative lesion has been identified" on myelography. In plain terms, someone should be able to point to the leak on a scan before you go to theatre. That usually means building the evidence in steps.

1. 1

   Brain MRI with contrast

   Looks for signs of low pressure: a thickened lining, swollen veins, a sagging brain. Radiologists can grade these with the Bern score, which estimates how likely a treatable spinal leak is.

   In plain terms: does your brain look like it's losing fluid?

2. 2

   Spine MRI

   Shows whether fluid is collecting outside the dura. If it is, a tear or root sleeve leak is likely. If it isn't, a fistula becomes more likely.

   In plain terms: which kind of leak are we hunting for?

3. 3

   Myelography to pinpoint it

   Dye goes into the spinal fluid and fast imaging tracks where it escapes. For fistulas, a 2024 review says you should always be lying on your side.

   In plain terms: exactly which level, and which side?

4. 4

   Confirmation and team review

   An equivocal finding is a reason for more imaging, not a reason to operate. The same review recommends follow-up myelography to confirm uncertain findings, and the guideline expects complex cases to go to a specialist multidisciplinary meeting.

   In plain terms: would another expert see the same thing?

5. 5

   Targeted treatment

   The fix that fits the leak type, at the level that's been shown, in the least harmful way.

   In plain terms: fix the leak that's been found.

Telling a fistula apart from normal anatomy is genuinely hard. Draining veins and the small pouches around nerve roots can look alike, which is why imaging specialists stress high-quality images and careful reading.

Myth or fact?

Tap each one to find out.

Check your care: which of these happened to you?

None of these proves anything went wrong. CSF leaks are difficult, and good surgeons don't always get a good result. But they're the things that make us look more closely. Tick any that apply.

Some of these deserve a closer look.

When does it become medical negligence?

A poor result isn't negligence on its own. CSF leak care is a specialised, fast-moving field, and the law judges your care against what was accepted practice at the time, not with hindsight. A claim needs all three of these.

In New South Wales, a surgeon isn't negligent if they acted in a way widely accepted by peer professional opinion as competent practice, under section 5O of the Civil Liability Act 2002 (NSW). That's why independent expert opinion is at the centre of every claim. The key question for the experts is usually this: what kind of leak, and where, did the evidence before surgery support, and did the operation match it?

Warnings are different. That defence doesn't apply to the duty to warn. Since Rogers v Whitaker, doctors have had to tell you about any material risk, meaning one you would likely want to know about. The Medical Board's code of conduct and the Commission's guidance on informed consent say the same, including telling you about the alternatives. For a failure to warn, you need to show you wouldn't have gone ahead if you'd been properly told, as the High Court explained in Wallace v Kam.

Causation, under section 5D, asks what difference it made. If the leak was really somewhere else, the question becomes what the wrong operation did to you: new pain, numbness, months of recovery, and more time living with the leak that was never fixed.

Someone else's care may matter too. If your leak began with a needle and you weren't followed up, that may be a separate question about where it happened. Read more about spinal and neurosurgical negligence, missed and delayed diagnosis and surgical errors and hospital negligence.

What a claim can cover

Compensation is meant to put you, as far as money can, in the position you'd have been in. Depending on your circumstances, that can include:

• Treatment, including reasonable costs of corrective surgery and specialist care, here or overseas
• Care and help at home, paid or from family
• Lost income, now and in the future
• Pain, suffering and loss of enjoyment of life
• Travel and accommodation for treatment

Our compensation guide explains how each part is worked out.

If you're still unwell after CSF leak surgery: what you can do now

You don't need to work any of this out before you talk to us. But if you have the energy, these steps help, and some of them protect your options.

1. Ask for your full records. Request your imaging as files, not just the reports, plus the radiologists' reports, operation notes, consent forms, discharge summaries and any team meeting notes. Our guide to getting your medical records explains how.
2. Keep everything in writing. Save emails, texts and portal messages, and note what you remember from each appointment, with dates.
3. Get an independent look at the images. An expert reviewing the actual pictures, not just the reports, is often what changes the picture.
4. Decide whether you want answers, compensation, or both. They're different paths, and you can take both.

A complaint outcome doesn't decide whether you have a claim. A regulator can decide to take no further action while a civil claim still succeeds, because the questions and the evidence are different. Read more in complaint or claim: which is right for you?

Time limits: you may have more time than you think

In NSW, the clock usually starts when your claim becomes "discoverable": when you knew, or ought to have known, that you'd been injured, that it was caused by someone's fault, and that it was serious enough to sue over (section 50D of the Limitation Act 1969). For many people with a CSF leak, that's not the day of surgery. It's the day a second opinion says the leak was never where they operated, or a later surgeon finds it somewhere else.

You then generally have three years, within an overall limit of 12 years from the surgery (section 50C). Courts can sometimes extend that outer limit. Other states have different rules, so see our guides to time limits in NSW, claims in other states and whether you can still sue years after surgery.

Questions people ask me