“I had the operation, and it hurts just the same.” This is one of the hardest sentences I hear in clinic, because it is usually followed by a long silence. The patient believes something extraordinary has happened to them, and that nobody can put it right any more. Neither is true. Persistent pain after spine surgery is far more common than it is talked about, and in most of these situations there is a sensible next step. That step, however, is almost never to operate again straight away.
Let us start with the name, because that is usually what wounds the patient first.
For a long time we called this condition failed back surgery syndrome. The term appears in older reports and in most search results, and it suggests precisely that the operation was botched. This is exactly why an international expert group proposed changing it: in their argument the old name names the wrong cause, misleads, and harms the patient as well. The name they proposed is persistent spinal pain syndrome, while the latest revision of the international classification of diseases records it as chronic pain after spinal surgery. There is a difference between the two labels, but the point of both is the same: the name no longer claims that the operation failed. It says only what is genuinely true, that the pain continued after the procedure.
This distinction has a practical consequence. If the label is “failed operation”, repeating the operation, this time properly, looks like the logical step. If the label is “pain that persisted”, the first question is not what to operate on again, but what is actually hurting. The rest of this article is essentially about that.
We have a picture of how common this is from studies working with large national patient databases. According to these, roughly one in five people who undergo lumbar spine surgery are left with persistent pain afterwards. That is a lot. It also means that anyone reading this now is not a one-off case, and not the victim of some rare misfortune.
One thing is worth clarifying right at the start, because without it the whole subject goes off course. The fact that it still hurts after surgery does not in itself mean that the operation was unnecessary, nor that it was done badly. The most common situation is that the procedure did what it set out to do, but the pain also had another source that the main complaint had been masking.
In clinic my first question is almost always the same: is this the same pain as before the operation, or a different one? Patients almost always know the answer, and that answer is worth more than the first three reports put together. There are three typical patterns.
After the operation the pain is in the same place, with the same character and along the same line as before. Patients put it as “it is as if it never happened”. Here we have to consider that the source of the pain was not what was operated on. This does not necessarily mean a wrong decision: the abnormality seen on the scan was real, it simply was not the thing causing the complaint.
There is a good period, from a few weeks to a few months, then the old pain gradually creeps back, often along exactly the same line. This pattern suggests that the problem operated on has returned, for example another disc herniation at the same level. Of the three, this is the easiest to identify and usually the most treatable.
The old complaint has gone, but another has appeared in its place: a different location, a different character, brought on by a different movement.
Some characteristic examples from the third group:
If you recognize yourself in one of these three, take it with you to the consultation. The pattern often points more accurately than the imaging.
Working through this question shows why we are not dealing with a single disease but with an umbrella term. The more common explanations:
One further point is worth clearing up in advance. Decompression surgery removes the pressure on the nerve, so it is aimed at the complaint that this pressure causes, typically the pain radiating into the leg. Back pain, however, can have several sources, and some of these are not touched by that procedure. A great deal of disappointment comes from this not having been said clearly enough before surgery.
Let us start with what we do not know. Repeat surgery has barely been studied: in the analysis gathering the relevant work together, only two studies addressed it at all. So if someone tells you that a second procedure can be expected to deliver what the first one did, that claim has no strong backing in the literature.
This does not mean repeat surgery cannot help. It means that it must never be treated as the self-evident solution, and that the decision cannot be delegated to the literature. It has to be justified individually, for each patient separately.
In practice this means the following. I do not recommend another operation when:
In these situations another operation is very likely to lead back to where we are now, only alongside a more scarred spine. The right step is to put the diagnosis in order: matching the complaint against the scan, targeted examination, and where it arises, a diagnostic block, which answers whether a given structure is responsible for the pain.
When the picture comes together. Three things have to hold at the same time:
Beyond this, surgery becomes an immediate question if new or worsening nerve deficit appears. The next section covers that.
The clearest situation is a recurrent disc herniation at the same level, because here the complaint and the structural cause meet unambiguously. There are two routes to choose between: removing the herniation again on its own, or stabilizing the segment. According to the analysis summarizing the comparative studies, the two solutions produced a similar degree of improvement, and they did not differ convincingly in the likelihood of further surgery either. Stabilization, however, is a bigger procedure with a longer recovery. It follows that stabilization is not the “more thorough” solution but a different kind of burden, and it must not be added on as an extra. Few studies stand behind this, so it too has to be treated with caution.
What can realistically be expected from a well chosen revision operation: it acts primarily on the complaint whose structural cause it removes. If there is fresh nerve compression behind pain radiating into the leg, it has a good chance of helping that. The same cannot be said for long standing back pain. What it does not give: it does not undo the first operation, and it does not resolve pain that has already become self-sustaining.
These are rare, but here delay does harm. Immediate specialist assessment is needed if:
The third and fourth points belong specifically to the period after surgery, which is why they are listed separately here. There is a separate guide on when a spinal complaint is an emergency.
Where another operation was the right answer. A 46 year old patient, four good weeks after removal of a disc herniation, then the old pain radiating into the leg returns along exactly the same line. The follow-up scan shows another herniation at the same level, on the same side. Complaint, examination and scan all agree. The herniation is removed again, without stabilization, because there is no reason for it.
Where it was not the spine that needed operating on again. A 58 year old patient after stabilization at two levels. The pain radiating into the leg has gone, but six months later a new complaint appears: low in the back, to one side, below the belt line, worst on standing up and when lying on the affected side. The spinal MRI does not explain it. A targeted diagnostic block confirms that the pain comes from the sacroiliac joint. Treatment is targeted physiotherapy and treatment directed at that joint, not another spinal operation.
Where the patient route was the right one. A 52 year old patient after decompression. The leg pain has resolved, but the back pain remains, and the patient experiences this as failure. The scan shows no abnormality that would explain the current complaint, and the pain pattern does not match anything either. Another operation does not arise. Supervised physiotherapy with gradually increased loading begins, together with work on the fear of movement. Improvement is slow and incomplete, but everyday life returns.
The difference between the three cases was not the intensity of the pain, but whether a structural cause could be assigned to the complaint, and whether the pattern matched the scan. These are typical courses, not promises. Individual outcomes may differ. You can read more cases here.
A good decision never comes from the scan alone, but from the complaints, the physical examination, the results of treatment so far and the scan together. This is as true after surgery as it was before. This information does not replace a medical examination. If in doubt seek medical advice, and immediately if urgent symptoms are present.
Does persistent pain mean my operation was done badly?
Not in itself. The most common situation is that the operation did what it set out to do, but the pain also had another source that the main complaint had masked. This is exactly why current international literature is moving away from the old label, failed back surgery syndrome: it names the wrong cause. Whether the operation itself was performed well is a separate question, and it can be answered from the operative report and the follow-up scan.
How common is this?
In large national patient databases, roughly one in five people who undergo lumbar spine surgery are left with persistent pain. It is important to add that there is no single agreed definition of who belongs in this group, so figures from different studies are hard to compare.
Will another operation help?
It depends on whether we can find a structural cause that matches what you feel. If we can, for example a recurrent disc herniation, then it has a good chance of helping. If we cannot, another operation is unlikely to bring improvement, while still carrying its risks. It is also worth knowing that repeat spine surgery has barely been studied, so this question cannot be answered in general terms with numbers. It needs an individual judgement.
Why does my pain not show up on the scan?
Because not every source of pain is visible on a spinal MRI. The sacroiliac joint usually is not, and neither is pain maintained by the nervous system. The reverse is also true: scar tissue or wear visible on a scan does not by itself tell us whether it hurts. There is more on this in the article on reading your MRI report.
How long before we can say the pain has persisted?
Nerve healing and tissue settling are measured in months, so a few weeks after surgery is too early to take stock. Numbness and weakness usually settle more slowly than pain. The exception is any situation with new or worsening nerve deficit, or signs suggesting infection: those must not wait.
What should I bring to the consultation?
The operative report, the scans from before and after surgery on disc or in digital form (not just the written report), the discharge summary, a list of your current medication, and a short note on whether the pain is the same as before surgery, whether there was a better period, and what makes it worse. The operative report matters most, because it shows what was actually done.
Is physiotherapy worth it once I have already had surgery?
Yes, and in most cases it is where we should start. If there has been no complete, supervised course of treatment since the operation, we simply do not know how much it would help. The kind also matters: gradually increased loading and easing the fear of movement give more than rest.
If the pain has stayed or come back and you are unsure about the next step, bring your scans and the operative report, we will go through them together, and I will give you a clear picture of the options.
This article draws on the following professional sources: