„At that age they no longer operate.” I hear this sentence every week in my clinic, and most often it does not come from a doctor, but from the family, a neighbour or the internet. Yet the decision does not rest on a date of birth. The difference between two eighty-year-olds is often greater than the difference between an eighty-year-old and a sixty-year-old. This article is about what actually decides it. Halfway down you will find a five-question self-test worth completing before you sit down for any consultation.
Let us start with the fact that these are two separate things, and in everyday speech we blur them together. One is the age of the spine, the other is the reserve of the body. The surgical decision is shaped almost entirely by the second.
With age the spine changes predictably. The discs lose water content, deposits appear on the small joints, the ligaments connecting the vertebrae thicken, and the mineral content of the bone decreases. Almost every spinal complaint of older age grows out of these few processes. I go through them one section below.
It is important to know that the process itself is not a disease but an age-related change. If an MRI scan is taken of anyone over seventy, we are likely to find narrowing, wear and a disc bulge, even when the person has no symptoms whatsoever. This is why the scan alone never decides treatment. Behind a thick, alarming-sounding report there may be someone with no symptoms, and behind a modest report there may be someone who cannot walk more than fifty metres.
Reserve is what becomes visible when something goes wrong. As long as everything runs smoothly, there is barely a visible difference between two eighty-year-olds. But when the body is put under strain, by an anaesthetic, an operation, a pneumonia, it turns out that one finds their way back to normal within days, while the other is out of action for weeks and sometimes does not come back fully to where they were.
The medical term for this is frailty. It is not a disease and not a diagnosis, but a description of state: it tells you how much strain the body can take. And this is only loosely connected to calendar age.
In practice it looks like this. Two patients, both 82 years old:
One lives alone, does their own shopping, gets up to the second floor by lift and without it, takes two medications, and has not fallen in the past year.
The other holds on to furniture even indoors, takes nine medications, fell twice last year, and lost five kilograms over six months without meaning to.
Their years of birth are almost the same. Their surgical risk is not comparable. In the first, a necessary spine operation can be performed as safely as in many sixty-year-olds. In the second, the question is not whether it is permissible to operate, but what can be improved beforehand, and whether the smallest possible procedure will resolve the problem.
Medical practice uses several methods to assess frailty. One of the simplest is a five-question scale, originally developed for screening ageing adults and used worldwide since. It needs neither a laboratory nor equipment.
Tick the statements that are true for you. The result appears below the questions.
Age on its own is almost certainly not a consideration here.
It matters that you put this score in the right place.
This is a screening questionnaire, not a diagnosis, and it certainly does not measure fitness for surgery. It does not tell you whether you can be operated on, and it replaces neither the medical examination nor the anaesthetist's opinion.
There is one particular twist that applies specifically to spinal patients, and few people say it out loud. Almost every patient living with narrowing of the spinal canal answers „yes” to the third question, about walking several hundred metres. That is precisely why they come to the clinic. In other words, the narrowing itself pushes the score up, without the patient's general reserve being poor. The same can be true of fatigue, if pain wakes someone at night.
This is why I do not use these five questions as a verdict, but as a starting point for the conversation. A result of 3 points where the points come from walking and fatigue means something quite different from 3 points made up of weight loss, falls and other illnesses. The first is often exactly what spine surgery resolves. The second is not.
This is the most important part of the chapter, so let me set it out separately. Several of the five questions cover things that can be meaningfully improved within weeks or months, and in practice this is what counts most towards the outcome of surgery:
If the problem is not urgent and there is room to improve on several of the points above, then the right answer is neither refusing surgery nor operating immediately, but a few months of targeted preparation. The professional term for this is prehabilitation. In that case we are not wasting the time, we are working with it.
In older age, spinal complaints typically come from three things. They are separate conditions, with different courses and different decision logic, yet they often occur alongside each other in the same patient. It is worth knowing which one you are dealing with, because the treatment differs too.
In the descriptions I deliberately highlight what the patient feels, because everyday experience often separates the three more accurately than the scan does.
The canal in which the nerves travel runs through the back part of the vertebrae. Wear-related changes narrow this canal and the nerves lose space. In older age this is what most often leads to the question of surgery. How you recognise it:
You can read a detailed description of this condition on the spinal stenosis page.
The mineral content of bone decreases over the years, and the load-bearing capacity of the vertebra decreases with it. Beyond a certain point a vertebra can collapse under a force that would previously have meant nothing: an awkward movement, a lifted shopping bag, sometimes with no preceding event at all. How you recognise it:
It is important that some vertebral fractures go unnoticed and only come to light on a scan taken later. The decision logic of this condition differs in part from that of narrowing. A separate article on it is in preparation.
If wear affects the spine unevenly, being more pronounced on one side, the spine tilts sideways and curves forward. This is not a continuation of the curvature seen in young people, but a separate change arising in adulthood on the basis of wear. Many people first experience it as adults. How you recognise it:
You will find a case with this kind of course, treated without surgery, among my patient cases. A separate article on this condition is also in preparation.
What follows is mainly about narrowing of the spinal canal, because in older age this is what most often leads to the question of surgery, and it is what we know most about. The decision logic of vertebral fracture and of degenerative curvature differs in part from this.
The great majority of spinal complaints settle without surgery or remain manageable over the long term. In my own practice around 90% of the patients who come to me do not need surgery. In older age this proportion is not worse but rather better, because narrowing usually develops slowly and fits within non-surgical treatment for a long time.
There is one thing here that I consider important to say as a surgeon. There are surprisingly few studies comparing surgical and non-surgical treatment of narrowing, and what we do know is less clear-cut than many people assume. What is consistently visible, however, is this: complications appeared in the surgical arms, and not in the non-surgical ones. Surgery has a price; patience usually does not.
It follows that as long as the symptoms are bearable, leg strength is preserved and daily life is manageable, waiting is not neglect but a justified decision. This does not mean doing nothing. The backbone of non-surgical treatment in older age is regular supervised exercise, maintaining muscle strength, and deliberately, gradually increasing the walking distance.
Honestly about the evidence. The oldest and frailest patients rarely enter the large comparative trials. What we know about that group comes mostly from observation, not from randomised studies. Individual courses may differ.
Surgery typically comes up in three situations:
Once we get this far, the most important question is the size of the procedure. Data covering large groups of older patients show clearly that the rate of serious complications roughly doubles when, instead of simple decompression of the narrowing, surgery is performed across several levels with fusion. The chance of returning to hospital follows a similar pattern.
In practice this means that in an older patient the good operation is the one that does the least of what is enough. If decompressing the narrowing at one level resolves the problem, then stabilisation is not needed with it. Fusion is not a „more thorough” solution, it is a greater strain. There are times when it is unavoidable, but it must not be added as an extra.
What can realistically be expected from such an operation is above all walking distance. In follow-up data from patients over eighty, the distance covered increased meaningfully after decompression and pain decreased. These are observations, not promises, and individual outcomes may differ. But they show well what the real goal is at this age: not tidying up the scan, but making it possible for the person to walk to the shop and back, and not to depend on others.
What it does not do: it does not make a spine younger, and it does not stop wear at the other levels.
These are rare, but here delay causes harm. Immediate specialist assessment is needed if:
The last two points deserve particular attention in older age, because there the question is not wear. You can read more about when a spinal complaint is urgent in a separate guide.
Where non-surgical treatment was enough. A 79-year-old pensioner with two years of shrinking walking distance, having to stop after about 200 metres, resolving within minutes on sitting down. No neurological deficit, muscle strength preserved. Of the five questions, only walking gets a yes. Supervised physiotherapy begins, focused on the trunk and hip muscles, alongside gradually increasing daily walking. Within six months the distance has grown several times over. Surgery never came up.
Where age did not, but condition did justify waiting. A 72-year-old patient with a short walking distance and narrowing on the scan. On age alone they could be operated on at any time, but their diabetes is poorly controlled, they had a cardiac event a few months ago, and they have lost weight. Surgery is not refused but postponed: medical optimisation, stopping smoking, targeted strengthening. Three months later the procedure can be performed with considerably lower risk. This is the most important message of this article.
Where the narrow procedure was the right answer. An 84-year-old patient with several other illnesses, whose walking distance has fallen below fifty metres and who can no longer manage the shopping alone. Non-surgical treatment has been exhausted. Decompression is performed at a single level, without fusion, under a short anaesthetic. The goal is not to improve the appearance of the scan, but to regain independent mobility.
The difference between the three was not age, but the deterioration in everyday function, the response to non-surgical treatment and the reserve of the body. 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 symptoms, the physical examination, the reserve of the body and the scan together. This information does not replace a medical examination. If in doubt seek medical advice, and without delay if urgent symptoms are present.
Is there an upper age limit for spine surgery?
Calendar age on its own is not a limit. Risk is determined by general condition, other illnesses and how much strain the body can take, and across large groups of patients these predict complications after surgery better than age does. Assessing exactly this is the job of the consultation.
What does it mean if I answered yes to several of the five questions?
It means preparation is worth the time, not that you cannot be operated on. Several of the points come from factors that can be improved within weeks or months: muscle strength, getting other illnesses under control, nutrition. It is also worth looking at which questions produced the points. If it was walking, that is often exactly what treating the narrowing resolves.
How much riskier is surgery in older age?
Risk depends not only on the patient but on the size of the procedure. In data from older patients, surgery involving fusion across several levels is followed by roughly twice as many serious complications as simple decompression. This is why one important question at the consultation is whether the smaller procedure is enough.
If the scan shows severe narrowing, does that mean surgery is unavoidable?
No. A finding on the scan is not on its own a reason to operate. Degenerative changes of the spine, including narrowing of the canal, are often found in older people who have no symptoms at all. The decision comes from the symptoms, the function and the examination together.
If I do not choose surgery now, am I doing damage?
Narrowing usually develops slowly, and waiting rarely closes off later options by itself. The situation changes if muscle weakness develops or worsens, or if the urgent signs above appear. That is exactly why follow-up matters.
How long does recovery take at this age?
After decompression at a single level, moving usually begins within a short time, but full recovery is slower than at a younger age and depends greatly on muscle condition before surgery. A precise timetable cannot be promised. What is worth knowing: targeted exercise in the weeks before surgery and getting other illnesses under control meaningfully improve the starting position.
What should I bring to the consultation?
Your existing MRI or CT images on a disc or digitally (not just the written report), your earlier reports, your full medication list, your answers to the five questions, and a short note on how many metres you can walk without stopping, what eases the problem and what makes it worse.
If they have been turned down because of their age, or major surgery has been proposed, bring the scans and reports, 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:
The five-question self-test is an English rendering of the questionnaire known in the international literature as the FRAIL scale: