Low back pain

It is rarely the sock you bent down to pick up.

You bent down to pick something off the floor. A sock, a shoe, one of the kids' toys. Nothing heavy. And something in your lower back went.

That story comes up almost every week, and the detail people always add is that it made no sense. They had lifted heavier things that morning.

For other people there is no moment at all. It builds. The first ten steps out of bed feel older than you are. You shift in your chair through a long meeting. Getting out of the car takes a beat longer than it used to, and you have started putting a hand on the door frame without noticing you do it.

Some of it settles in a few days. Some of it hangs around at a level you can work with, which is often the version people leave the longest.

What is actually in there

Five vertebrae carry most of your body weight and almost everything you do with it.

Between them sit discs, which people tend to picture as cushions. They are closer to pressure distributors. They spread load across the joint and change shape as you move, which is what lets you bend at all.

Behind the discs are the facet joints, which guide and limit movement. Around all of it are two layers of muscle doing different jobs: deep stabilisers that hold segments in position without you thinking about it, and larger surface muscles built to move you.

The deep layer is where it gets interesting. Research on people with ongoing low back pain has found changes in how those deep stabilisers work and in how clearly the brain represents that part of the body. Siobhan Schabrun and colleagues describe a smudging of the cortical map, where the brain's picture of the lower back becomes less distinct over time.

That matters because control depends on information. A region the brain cannot see clearly is a region it struggles to coordinate.

This is why we look at the lower back as a control problem as much as a tissue problem.

The load it carries

Your back is not fragile. It is one of the most robust structures you own, built to be loaded.

The issue is rarely a single movement. It is the total volume of a movement relative to what you have prepared for.

Bending forward is a good example. Nothing about bending is dangerous. Your spine is designed to do it. But bending under load, repeatedly, in a body that has spent the rest of the day seated, asks a lot of tissue that has not moved in hours.

Sitting deserves its own mention, because it is the load nobody counts. Sitting puts more sustained pressure through the lumbar discs than standing does, and most of us do it for the majority of our waking day, in the same position, without variation.

As Matt puts it: sitting is to your spine what sugar is to your teeth. The problem is not any one dose. It is the exposure, and how little recovery sits between doses.

Why the threshold got crossed this week

The sock did not do it.

Something has to be the last straw, and the last straw gets the blame because it is the only part you can see. What matters is what was already stacked underneath.

Two things move the line. Load went up, or capacity came down.

Load went up

A weekend of moving furniture. A new training block. A long drive. A garden project. A baby who now needs lifting out of a cot forty times a week. A job that changed from standing to sitting, or the reverse.

Capacity came down

A stretch of poor sleep. A month where nothing moved except your commute. Illness. A period where stress has been high and recovery has been the first thing to go.

Usually both, at once. The timing feels random. It is arithmetic.

If you would rather skip ahead and have someone look at it, that is a reasonable place to start.

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Why your capacity was thin in the first place

Your body is built to adapt.

Load arrives, tissue responds, you recover, you carry on. That is not the absence of stress. That is a nervous system doing its job.

Pain in your lower back tells you that one region took more than it could handle. It tells you very little about the rest of you. Two people can arrive with the same sore back and be in completely different positions underneath it.

We describe it in three stages: adapting, borrowing and overloaded. The line between them is not how much load you carry. It is how much of it you clear before the next lot arrives.

The lower back is often where the borrowing becomes visible, because it is downstream of so much else. When hips stop rotating or a mid-back stops extending, the lumbar spine is what makes up the difference. It takes on movement it was not designed to supply, every day, quietly.

Read how your body carries load

What we check

With low back pain, people reach for one of two things to tell them how bad it is.

How much it hurts, or what a scan says. Neither answers the question on its own, because they are not measuring the same thing.

Pain tells you how irritated a structure is today. It is a real signal and it is a poor guide to size. A back can hurt sharply and be mechanically minor, or ache mildly for years while movement quietly disappears.

A scan tells you something different. It is closer to a record of what a region has carried. Reviews of imaging in people with no pain at all have found signs of disc degeneration in roughly a third of people in their twenties, rising to the large majority by their sixties. That is not a reason to ignore what a scan shows. It is a reason to stop reading it as the explanation for today.

Put them together with how you actually move, and you have three readings instead of one. Symptoms are the last thing to appear and the first thing to disappear, so we do not work from how you feel on the day alone. We check.

A history that goes back further than this week

What you do, how you sleep, what your body has already been through, and what has changed recently.

Movement and functional assessment

How far the region moves, how it moves, and what the surrounding structures are doing to compensate.

A neurological screen where it is indicated

Reflexes, sensation and strength, to understand how well the system is communicating.

Imaging where it is indicated

Where we need to understand structure before making a decision, we say so and explain why.

A report of findings before any care starts

We tell you what we found, what it means in plain English, and what we think is worth doing about it. You decide from there.

When to seek urgent care

Go to an emergency department immediately, the same day, if you have numbness around your groin, inner thighs or buttocks, or any change in bladder or bowel control, or weakness in both legs. This combination is rare, but it needs assessment within hours rather than days.

See your GP or go to an emergency department if your back pain follows a significant fall or impact, comes with fever or unexplained weight loss, or is accompanied by progressive weakness or numbness in a leg.

If you are not sure, ask us. We would rather send you to the right person than be the wrong one.

Common questions

Should I rest or keep moving?

General health guidance for low back pain has moved a long way from bed rest. Staying gently active, within what you can tolerate, is the broadly accepted approach, and prolonged rest tends to make the return harder. What that looks like in practice depends on what is going on, which is worth establishing first.

Do I need a scan?

Not usually, and not first. Imaging is useful when something in the history or examination points to a reason for it. Scanning early and without indication tends to produce findings that are common in people with no pain at all, which can confuse the picture rather than clarify it.

Is it a disc?

Sometimes, and less often than people assume. Disc-related pain has a recognisable pattern, and plenty of low back pain does not fit it. That is one of the things an assessment is for.

Is sitting bad for my back?

Sitting is not dangerous. Sitting in one position for hours, most days, without variation, is the part worth paying attention to. The fix is usually less about the perfect chair and more about how often you change what you are doing.

Why does it come back every year?

Recurrence is common, and it usually means the thing that loaded the area is still loading it. That is a different question from what to do about this episode, and it is the one most people never get answered.

We do not know until we check

An assessment at Wild Chiropractic in Shenton Park starts with a history, a look at how you move, and a conversation about what we found.

Book an assessmentWhat happens first