Back Pain After a Fall: When to Get Checked Out

Most of the time, the bone is fine

A fall is frightening, and the ache that follows it tends to feel more ominous than an ordinary backache. Patients come in convinced they have broken something. In most cases they have not.

The low back takes force well. What usually gets injured in a fall is the soft tissue around the spine: muscle, ligament, and the small joints between the vertebrae. That kind of injury hurts a great deal, it is often worse the next morning than it was in the moment, and it stiffens up badly after sitting still. It also tends to improve steadily over one to three weeks without anything dramatic being done about it.

So the useful question after a fall is not “does my back hurt?” It almost certainly does. The question is whether anything in your symptoms suggests the fall did more than bruise the soft tissue. That is a short and specific list, and most of this article is about it.

The findings that mean you should be seen now

Any of the following is a reason to be evaluated. Anything on the neurologic side of the list is an emergency, and emergencies belong in an emergency department. Call 911 or go to the nearest emergency room. An office is not the right setting for those problems, mine included, because what they need is immediate imaging and a team that can act on it that hour.

• New weakness in an arm, leg, hand, or foot, or weakness that is getting worse.
• New numbness or tingling in a limb, especially if it follows a line rather than sitting in one patch.
• Loss of bladder or bowel control, new trouble starting to urinate, or numbness in the groin or saddle area.
• Neck pain that started with the fall, particularly with any tingling in the arms or hands.
• A head injury, loss of consciousness, or confusion at any point.
• Severe, focused pain directly over the midline of the spine, the bony ridge you can feel down your back.
• Pain severe enough that you cannot stand or walk.
• A forceful mechanism: down a flight of stairs, off a ladder or roof, thrown from a bike, or a car crash.
• Any fall in someone over about 65, on long-term steroids, with known osteoporosis, on blood thinners, or with a history of cancer.
• Pain that is not improving at all after two weeks, or that is steadily worsening.

Two of those deserve extra emphasis. Anything involving the bladder, bowel, or saddle area can point to compression of the nerve bundle at the bottom of the spinal canal. That is rare, and it is time-sensitive. It should not wait until morning, and it should not wait for an appointment. Go to an emergency department. And if the neck hurts after the fall, with numbness or weakness in the arms, do not have the person walk it off or twist the neck to test it. Keep still and call for help.

Notice what is not on that list: the raw intensity of ordinary muscular back pain. A soft tissue injury can be genuinely awful and still be the routine, recoverable kind.

When the pain travels down a leg or an arm

Pain that stays in the back is one thing. Pain that runs down a leg, or out into an arm, is another, and after a fall it deserves its own attention.

That travelling pain is called radicular pain. It comes from a nerve root being compressed or irritated where it exits the spine, and it follows the path of that nerve instead of sitting in a patch. Patients describe it as a line. Down the back of the thigh into the calf. Along the outside of the leg into the foot. From the neck through the shoulder blade into the fingers. Pins and needles usually come with it, and often a strip of numbness.

A fall produces it in several ways. The impact can push disc material out against a root. It can swell and bruise the tissue in the small tunnel the nerve travels through. In a spine that was already narrow, the fall is simply the event that turns a tolerable amount of room into not enough. A vertebra that compresses and loses height can also pinch a root as it settles.

So here is the rule I give patients: radiating pain after a fall should be evaluated. Not necessarily in an emergency department. If there is no weakness, no saddle numbness, and no change in bladder or bowel control, this is a clinic problem rather than an ambulance problem. But it should be looked at rather than waited out. The structure generating it is a nerve, and a nerve left compressed for months recovers less completely than one dealt with early.

Plenty of this settles. The swelling resolves, the root calms down, and the leg quiets over several weeks. My concern is the patient who assumes that is guaranteed, waits nine months, and arrives with a foot that no longer lifts the way it used to.

Why age and bone health change everything

This is the part I most want people to understand, because it changes what a “minor” fall means.

In a healthy 35-year-old, a fall from standing height rarely breaks a vertebra. In someone with thinning bone, that same fall can be more than enough force. A fracture that happens from a low-energy event like falling from standing height is called a fragility fracture, and vertebral compression fractures are the most common kind.

That is why I treat a fall differently depending on who fell. Take a younger adult who slipped on ice, has no nerve symptoms, and hurts across the muscles beside the spine. That person usually needs reassurance and a plan, not a scan. A 72-year-old who tripped over a rug is a different situation, especially with sharp, focused pain over one spot on the spine. I would rather image that person early than watch and wait.

There is a second reason to take the fracture question seriously. A fragility fracture is not just an injury to heal. It is information about bone strength, and it identifies someone at meaningful risk of a further fracture in the following couple of years. Finding the fracture is therefore also the moment to get bone health assessed and treated. That opportunity is easy to lose when all the attention stays on the injury itself.

Landing on your backside: the tailbone and the SI joint

How you land decides what gets hurt. Coming straight down onto the buttocks, off a step or on ice or missing a chair, drives the force into the very bottom of the spine and into the pelvis. Two structures absorb it there, and in my experience both get overlooked, because a standard X-ray of the lower back does not show either one well.

The tailbone. The coccyx is the small segmented tip at the end of the sacrum, and a direct landing can bruise it, dislocate it, or break it. The pain is distinctive enough that patients often describe it before I ask. Sharp and exactly at the bottom. Much worse sitting than standing, worse on a hard seat, worse leaning back, and worst in the moment of standing up. A dedicated coccyx X-ray is what shows it, not the routine lumbar series.

Most tailbone fractures heal without an operation. A wedge or donut cushion takes weight off the tip. Add anti-inflammatories and shorter stretches of sitting, and that carries most people through over a couple of months. A minority hold on to the pain long after the bone has healed. That is called coccydynia, and it responds well to a targeted injection and focused pelvic floor therapy. The reason to have it identified is simple. Sitting is not optional in most people’s lives, and the fix is straightforward once the tailbone is named as the source.

The sacroiliac joints. These are the two joints where the sacrum meets the pelvis, and they take a great deal of load. Landing on one side, or a hard jolt straight up the spine, can sprain the ligaments around them or leave the joint irritated for months afterward. SI joint pain sits in the buttock, or just beside the dimple above it. It sometimes wraps into the groin and can run down the back of the thigh. It flares on the things that load one side: rolling over in bed, climbing stairs, standing up from a low chair, getting out of a car.

That referral pattern is exactly why the SI joint is missed. Pain down the back of the thigh gets labeled sciatica. An MRI of the lumbar spine turns up ordinary disc wear. The patient is then treated for a disc that was never the problem. Exam maneuvers that stress the joint point toward it. The most reliable way to confirm it is an image-guided numbing injection, because relief from a well-placed block is the answer. Most people improve with therapy aimed at the pelvis and hips plus an injection. A small group has a confirmed diagnosis and pain that keeps coming back. For them, a minimally invasive SI joint fusion stabilizes the joint through a small incision at the side of the hip. It is one of the more reliably satisfying operations I perform.

What a careful evaluation actually looks like

The reasoning is the same one I use for any spine problem, in order.

What happened. How far did you fall, onto what, and how did you land? A fall onto the buttocks or feet from a height transmits force straight up the spinal column. A slip onto soft ground is a different injury. I also ask what you could do afterward, because walking away from it is genuinely reassuring information.

The exam. I press along the midline of the spine, looking for tenderness right on the bone rather than in the muscle beside it. I work down to the very bottom, over the sacroiliac joints and the tailbone, because those are the ones that get skipped. I check strength, sensation, and reflexes in the arms and legs, I map where any radiating pain actually runs, and I watch you walk. For the neck, validated rules help decide who actually needs imaging after trauma. They turn on age, the mechanism, tingling in the limbs, midline tenderness, and whether the neck rotates comfortably.

The imaging, if it is needed. Plain X-rays show alignment and most fractures. CT shows bone detail far better and is the right test when a fracture is likely or the mechanism was forceful. MRI is for the nerves, the spinal cord, the ligaments, and for telling a fresh fracture from an old healed one.

I am deliberate about the order because the goal is not to scan everyone who falls. It is to scan the people in whom a scan will change what we do.

If it is a fracture, what usually happens next

Patients hear “fracture in your spine” and picture surgery. For the most common injury in this category, a compression fracture, that is usually not the path.

Most of these are stable, meaning the fracture is not going to shift and the nerves are not at risk. They are managed without an operation: controlling the pain properly, a brace in selected cases, and getting back to moving early rather than resting in bed. Pain typically improves substantially over the first several weeks as the bone heals. Prolonged bed rest is something I actively discourage, because deconditioning and further fall risk are real problems in exactly the population that gets these fractures.

Surgery enters the conversation in a minority of cases. That means a fracture that is unstable, or one compressing the spinal cord or a nerve root. It also means pain that stays severe despite a genuine trial of non-operative care. If nerve compression from the injury is the issue and the anatomy is focal, a targeted decompression may be appropriate. Those decisions depend on the fracture pattern, your bone quality, and your overall health, not on the word “fracture” by itself.

If none of the warning signs apply

For the ordinary case, the plan is unglamorous and it works.

Keep moving within what the pain allows, rather than going to bed. Use ice or heat, whichever genuinely helps you. Take an anti-inflammatory if it is appropriate for you and your other medications. Expect the first two days to be the worst. Then expect steady, unspectacular improvement, with stiffness lingering after the sharp pain fades.

Come back for evaluation if the pain stops improving, if it starts worsening after an initial improvement, or if anything on the warning-sign list appears late. Some symptoms do show up a few days after the fall rather than immediately.

When the pain outlasts the injury

Three weeks is the checkpoint I use. A bruised muscle should be clearly better by then, even if it is not finished. Pain that is unchanged at three weeks is not behaving like a bruise. Neither is pain that improved and then came back, or pain still dictating your day at six weeks. That is the rule worth taking from this article. Persistent pain after a fall should be evaluated, whether or not anything on the warning list applied to you.

The point of that evaluation is precision. Pain after a fall can come from a compressed nerve root, an undetected fracture, an irritated SI joint, a bruised tailbone, or a facet joint. Those five are treated five different ways. Treating the wrong one is how people end up months into therapy that was never aimed at the right structure. Most of what I find does not need an operation, and I say so plainly when that is the case.

When surgery is the right answer, it is smaller than patients picture. If a nerve root is compressed and the pain has not settled, the operation is a decompression through a small incision. I use an operating microscope and a tubular retractor that spreads the muscle apart rather than cutting through it. For focal compression I can often use a spinal endoscope instead, a pencil-width port with the camera at its tip, which leaves the muscle essentially undisturbed. These are outpatient operations. Patients walk the same day. Relieving the pressure is usually the whole procedure, which means the large majority never need a fusion and the spine keeps its motion.

My rule in the operating room is complete first, small second. I will not shrink an operation to the point of leaving a nerve compressed. The technique exists to make a complete decompression less costly to get to, not to do less of one.

The bottom line

If you fell and your back hurts, check yourself against the warning signs first. Anything neurologic, anything involving the bladder or bowel, a hurt neck, or a head injury means emergency care, at an emergency department, that day. Focused pain right on the spine, a forceful fall, or being older or having fragile bones means being seen soon. Pain running down a leg or an arm means being seen. So does tailbone pain, or pain deep in one buttock that will not let you sit or roll over. Short of those, a sore back after a fall is usually a soft tissue injury that resolves with sensible activity and time.

The one rule that covers all of it: if the pain is not steadily fading, have it looked at. Falls are how quiet spine problems announce themselves. Caught early, the answer is often a small operation or none at all. Nine months later, it is a longer road.

I treat these injuries with the smallest operation that will actually do the job. Most of the people I see after a fall never need one at all. Not sure which of these describes you? Was a fracture found and never explained to you? Book a consultation or second opinion, and we will work out what is generating your pain and what to do about it.

This article is for general educational purposes and is not medical advice. It does not create a doctor–patient relationship. For guidance about your own spine, see a qualified physician. If you think you are having a medical emergency, call 911 or go to the nearest emergency department rather than waiting for an appointment.