Chiropractic Care and X-Rays: When They're Needed (and When Your Spine Would Rather You Didn't Bother)
Somewhere out there is a person who believes every visit to a chiropractor begins with a full-body X-ray, like a TSA scanner but with more popping sounds. Let's clear the air: your spine is not a mystery box that needs to be cracked open and photographed every time it feels a little stiff from sitting through a Zoom meeting.
X-rays absolutely have a place in chiropractic care. They're just a much smaller, much more specific place than the myth suggests and the actual research is refreshingly clear about where that line sits.
When X-Rays Are Not Needed (Which Is… Most of the Time)
If you walk in with ordinary low back pain and no alarming symptoms, current guidelines are blunt about it: skip the X-ray. A review from The Clinical Compass, summarizing current diagnostic imaging guidelines used in chiropractic education, states plainly that X-rays are not initially indicated for non-specific acute, subacute, or persistent back and neck pain when there are no "red flags" present, and that radiographs aren't useful for screening for contraindications or for evaluating biomechanical changes.
The American Chiropractic Association's own Choosing Wisely recommendation says essentially the same thing to its own profession: don't routinely order imaging for acute low back pain in the absence of red flags. That's not an outside critic wagging a finger, that's the field regulating itself.
This isn't just theory. A study of patient records across seven chiropractic teaching clinics found that among patients with no red flags, 100% were appropriately not referred for imaging — and overall, only 3.4% of new low back pain patients ended up needing X-rays at all. So statistically, if you're a fairly typical patient with garden-variety back pain, the odds of walking out with an X-ray order are lower than the odds you got a slightly judgmental look from your chiropractor about your desk setup.
When X-Rays Are Needed: Enter the Red Flags
"Red flags" sounds dramatic, like something from a spy thriller, but in clinical terms it just means signs that something more serious than everyday muscle or joint pain might be going on. Guidelines summarized by The Clinical Compass and echoed by the American College of Radiology's Appropriateness Criteria point to imaging being appropriate when there's concern for things like:
Significant trauma (a fall, a car accident, blunt force — anything more dramatic than "I slept wrong")
Suspected fracture, tumor, or infection
Progressive or severe neurological symptoms: think worsening weakness, numbness, or loss of coordination
Signs of cauda equina syndrome (a rare but urgent condition involving bowel, bladder, or saddle-area sensation changes, one of the few genuine "go now, not later" situations in back pain)
No improvement after 4–6 weeks of conservative care
That last one is worth sitting with a big chunk of appropriate imaging isn't ordered on day one. It happens when a reasonable trial of treatment hasn't helped. In other words, your chiropractor isn't supposed to reach for the X-ray machine out of curiosity; it's supposed to be a response to something not adding up.
"But What About Radiation?" (A Fair Question)
Here's the part where we resist the urge to be dramatic, because the actual numbers don't need help. According to a review on radiation risk in medical imaging published via the National Institutes of Health, the average American absorbs about 3 millisieverts (mSv) of radiation every year just from background sources, radon in your basement, cosmic rays, the ground itself being mildly radioactive, like a passive-aggressive roommate. A single lumbar spine X-ray delivers somewhere around 1.5 mSv, which is roughly the equivalent of about six months of ordinary background radiation. That same NIH review notes that plain radiography (unlike CT scans) falls into a dose range where there's no direct epidemiological evidence of increased cancer risk, though a very small theoretical risk can't be entirely ruled out under conservative models.
Translation: an appropriately ordered spine X-ray is not a radioactive event worth losing sleep over. It's also not something to collect like Pokémon cards. The "as low as reasonably achievable" principle that guides medical imaging exists precisely so providers order it when it's useful and skip it when it isn't, which, as the research above shows, is most of the time for routine back pain.
Why the Myth of "Every Visit Starts With X-Rays" Persists
Some of this comes from older chiropractic traditions that historically used more routine imaging, including full-spine films, partly to evaluate posture and alignment. But that approach has been increasingly out of step with current evidence-based guidelines, which is exactly why organizations like the ACA now explicitly caution against using X-rays as a routine measure of "progress" or alignment. Research looking at chiropractors' actual adherence to imaging guidelines has found the overwhelming majority now follow the "no red flags, no imaging" standard — even though survey data shows a small percentage of practitioners still hold outdated beliefs about the value of routine or full-spine films.
So if the myth persists, it's less "chiropractors love handing out radiation" and more "some old habits and outdated marketing photos take a while to fully retire."
The Bottom Line
X-rays in chiropractic care are a tool for a specific job (ruling out fractures, tumors, infections, and other serious pathology, or investigating pain that hasn't responded to conservative treatment) not a routine part of every visit. If you show up with straightforward back pain and no red flags, current evidence-based guidelines say your chiropractor should be reaching for their hands and a treatment plan, not the X-ray order form. If imaging is recommended, it's a reasonably low-radiation, well-justified step — not a leap into a nuclear reactor.
Your spine has been through enough. At least it can catch a break from unnecessary paperwork and imaging bills.
Sources
The Clinical Compass. "Diagnostic Imaging" evidence summary. clinicalcompass.org
Corso, M., et al. "Adherence to spinal imaging guidelines and utilization of lumbar spine diagnostic imaging for low back pain at a Canadian Chiropractic College: a historical clinical cohort study." PMC. PMC9479444
American Chiropractic Association. "Chiropractic Education and Radiography Best Practices." ACA Today. acatoday.org
Herzog, R., et al. "Knowledge of and adherence to radiographic guidelines for low back pain: a survey of chiropractors in Newfoundland and Labrador, Canada." PMC. PMC7812732
Hong, J.Y., et al. "Exploring factors influencing chiropractors' adherence to radiographic guidelines for low back pain using the Theoretical Domains Framework." PMC. PMC9082849
ACR Appropriateness Criteria — Low Back Pain. PubMed. PubMed 27496288
Sadigh, G., et al. "Radiation Risk From Medical Imaging." PMC (NIH). PMC2996147
This article is for educational purposes only and isn't a substitute for individualized medical advice. If you're experiencing severe, worsening, or unusual symptoms alongside back or neck pain, talk to your provider promptly.