A broken bone can be a one-time accident. It can also be the first visible sign that your bones have been getting weaker for years. A DEXA scan helps tell the two apart. It measures bone mineral density at the hip and spine, and the result, together with your age and fracture history, guides whether you need treatment to prevent the next break. If you are 50 or older and broke a bone from a minor fall, ask your doctor about a scan soon, and do not let scheduling delay any treatment your doctor recommends.
This guide covers what happens to bone after a fracture, which breaks should prompt testing, when to scan and rescan, how weight loss changes the picture, and how to book a scan yourself.
TL;DR
- A new fracture in an adult aged 50 or older signals higher risk of another one, especially in the following year, so it should prompt a bone health evaluation.
- A DEXA scan measures bone density at the hip and spine. A T-score of -2.5 or below is osteoporosis, and a score between -1.0 and -2.5 is low bone mass (osteopenia).
- Follow-up testing makes sense after a fracture, but it should not hold up treatment to prevent a second fracture.
- Weight changes can affect scan precision, so use the same scanner, note your weight and compare like with like.
- Calcium, vitamin D, weight-bearing exercise, fall prevention and medication when indicated are the core protection steps.
Table of Contents
- What a fracture can tell you about your bones
- Can bone density recover after a fracture?
- Which fractures should prompt a bone density check
- When to get a DEXA scan after a fracture
- What a DEXA scan measures and how to read your result
- Our perspective: a fracture is a moment to act, not to wait
- DEXA after weight loss
- Protecting your bones and preventing the next fracture
- Book your scan directly
- Practical checks before you book
- FAQ
- Sources
What a fracture can tell you about your bones
Osteoporosis is a condition of low bone density, deteriorating bone tissue and disrupted microarchitecture. Bone strength drops, and fracture risk climbs. It is also silent: according to the Bone Health and Osteoporosis Foundation's clinical guidance, it is subclinical until a fracture complicates it. For many people, the broken bone is the first symptom.
The World Health Organization frames it with a useful comparison: osteoporosis is a risk factor for fragility fracture, just as hypertension is a risk factor for stroke. A fragility fracture is a break from a fall at standing height or less, or from no obvious injury at all. Breaking a wrist tripping on a rug is a very different event from breaking one in a car crash.
There is one more point worth knowing. A fragility fracture is a critical predictor of future fracture risk, and it confirms skeletal fragility even when bone density is not in the osteoporotic range. So a "normal enough" scan does not erase what a low-trauma break suggests. Your doctor weighs both.
Can bone density recover after a fracture?
The honest answer: partly, and it depends on age, cause and what you do next.
Research reviewed in a paper on systemic bone loss after fracture describes bone loss throughout the skeleton, not just at the break, beginning within weeks of the injury and lasting up to 24 months. Animal and human studies suggest bone quality may not fully return to its pre-fracture level, especially in older patients.
That sounds discouraging, but it points to action rather than resignation:
- The first year matters most. Risk of another fracture is highest right after the first, which is why the window for evaluation and treatment is now, not "someday."
- Density is only one piece. Bone quality and structure also drive strength. Our article on the trabecular bone score explains one way clinicians look beyond the raw number.
- Treatment exists. Pharmacologic options, nutrition and exercise can all slow loss, and some medications increase density. Your clinician decides which fits your risk.
The realistic goal is not to return to a 25-year-old skeleton. It is to stop further loss, stabilize what you have and cut the odds of the next break.
Which fractures should prompt a bone density check
Not every broken bone points to osteoporosis. Fingers, toes, skull and fractures from high-impact trauma are generally not the concern. The ones that matter most are low-trauma breaks, especially at the hip, spine (vertebrae) and wrist or forearm.
Guidance from the Bone Health and Osteoporosis Foundation sets out these thresholds:
- Any new fracture in an adult aged 50 or older signifies elevated risk for later fractures, particularly in the year after the first.
- Pharmacologic treatment should be started in postmenopausal women and men aged 50 and older who have a hip or vertebral fracture.
- For a wrist or forearm fracture in the same age groups, a T-score of -2.5 or below means treatment should be considered.
- For people with low bone mass, a 10-year hip fracture probability of at least 3%, or a major osteoporotic fracture probability of at least 20%, indicates high risk and a need for medication.
Those last two numbers come from FRAX, a calculator that blends your age, history and bone density into a 10-year risk estimate. We walk through it in our FRAX score guide for U.S. patients.
Men are often overlooked here. If you are a man who has broken a bone from a minor fall, see who needs bone density testing and when.
When to get a DEXA scan after a fracture
There is no single magic date. Here is how to think about it.
Scan soon, but do not wait for it
Bone density testing is the standard way to establish where you stand. But the Foundation's order-set guidance says follow-up testing should be done when a fracture has occurred or new risk factors have developed, and it should not delay treatment for secondary fracture prevention. If you have had a hip or spinal fracture at 50 or older, your doctor may recommend treatment whatever the scan shows.
Repeat intervals are individual
The International Society for Clinical Densitometry recommends individualizing repeat testing intervals based on age, baseline density, treatment type and clinical factors linked to bone loss. A common pattern is a repeat scan around one to two years after starting treatment, but your doctor sets it for you. For the general picture, see our guides on DEXA scan frequency by risk and DEXA scan timing.
A good DEXA report should say when the next scan is due. According to the Foundation's clinician guide, it should specify the timing based on clinical information, and if that is unavailable, still give a general repeat-testing recommendation.
Back pain after a fracture is a separate trigger
Spinal fractures can happen without a dramatic event. The Foundation's order set advises repeating vertebral imaging if you have documented height loss, new back pain, a change in posture or a suspicious chest X-ray since your last vertebral imaging. If that sounds like you, tell your doctor rather than waiting for a routine rescan.
Ask about a fracture liaison service
Many hospitals run fracture liaison programs. Patients with a recent fracture are referred for care coordination and transition management, and the programs have shown improved quality of care. If you were treated for a break in an emergency room or orthopedic clinic and nobody mentioned bone health, ask if your hospital has one.
What a DEXA scan measures and how to read your result
A DEXA scan measures areal bone mineral density at specific sites, mainly the hip and spine. Under the Foundation's criteria, osteoporosis is diagnosed at a T-score of -2.5 or lower, and osteopenia, or low bone mass, falls between -1.0 and -2.5. The same measurements are used to confirm a diagnosis, predict future fracture risk and monitor patients over time.
A T-score compares your density with that of a healthy young adult. It is not a grade, and it is not destiny. Someone with a score of -2.0 and a recent hip fracture may need more aggressive care than someone with -2.7 and no fracture history. For a plain-language walkthrough, read how to decode your DEXA results in four steps.
The procedure itself is quick and painless. Our page on the DEXA scan procedure covers what to wear and what to expect, and our bone density test page covers costs and T-scores.
Our perspective: a fracture is a moment to act, not to wait
We run a platform that helps people find and compare DEXA clinics across the U.S., and the pattern we see in the questions people bring is consistent. Many arrive after a break, unsure whether to wait for a doctor's visit months away, worried about cost, and unsure whether a scan will change anything.
Our view is simple. A fracture after 50 is information, and information is only useful if you act on it. The scan is quick, the radiation dose is low, and the result tells you and your clinician whether you are dealing with osteoporosis, low bone mass or neither. What the research above makes clear is that the year after a first fracture is when risk is highest, so a slow start costs something.
We also want to be clear about what a scan cannot do. It does not replace your doctor's judgment, and it should never be the reason treatment is put off. Use it to be an informed participant in that conversation: bring your result, your fracture history and your questions. Comparing cash prices and booking directly is a way to remove the paperwork friction, not the medical oversight.
— Erik
DEXA after weight loss
People who lose a lot of weight, whether through diet, medication or bariatric surgery, often wonder about their bones. The research we reviewed does not give a single rule for when to scan after weight loss, so talk with your doctor if you have lost substantial weight, are over 50, or have other risk factors such as a prior fracture.
What the evidence does say concerns how to scan well when your weight is changing:
- A change in weight or fat mass may affect the precision and accuracy of bone density measurements, and your weight should be recorded at every scan.
- Variations in fat-fold position can cause uneven changes in how fat mass is distributed, so the technologist should retract the panniculus the same way at baseline and follow-up.
In practice: go back to the same facility and, ideally, the same scanner, tell the technologist your weight has changed, and compare reports from the same machine. If your goal is tracking fat and lean mass rather than bone, timing differs. Body composition scans are typically spaced much closer together, as our timing guide explains, and our body composition scan page shows where to book one.
Protecting your bones and preventing the next fracture
The Foundation's guidance sums up protection in four parts: adequate calcium and vitamin D, regular weight-bearing exercise, medication when indicated by fracture history or FRAX, and fall prevention, all with ongoing clinical monitoring.
Nutrition. Aim to get calcium and vitamin D from food where you can, and ask your doctor before starting supplements, since the right dose depends on your diet, kidney health and medications. For a broader look at everyday habits, this list of everyday habits for stronger bones is a good place to start.
Exercise. Walking, jogging, dancing and resistance training load the skeleton. If you are recovering from a fracture or have known osteoporosis, ask your doctor or physical therapist which movements are safe for you, especially anything that twists or flexes the spine.
Medication. Several FDA-approved drugs can reduce bone loss and fractures. They have benefits and risks, and the decision belongs in a conversation with your clinician or an endocrinologist. If you have had a hip or spine fracture, expect that conversation to come up.
Fall prevention. Most fractures in older adults follow a fall. Check lighting and loose rugs, ask a pharmacist whether any of your medications cause dizziness, and get vision checked.
Book your scan directly
If your doctor has not ordered a scan, or the wait is long, you can compare clinics yourself. Dexascans lists more than 500 locations across 48 states where you can book bone density and body composition scans without a physician referral, with cash prices shown up front. Search by city or ZIP on our DEXA scan locations page, then bring your report to your doctor, who will use it to decide on treatment. Some clinics also offer combined bone and body composition appointments.
Practical checks before you book
Confirm the table can handle your weight
Scanner weight limits range from 120 to 150 kg depending on the model, and a forearm scan should be considered if you exceed the table's limit. Some clinics have higher-capacity equipment; our guide to DEXA weight limits and clinics explains what to ask.
Mention contrast and recent imaging
Positioning errors or contrast material in the body can produce falsely high readings, and interpretation depends heavily on technologist training. Tell the clinic about any recent CT or MRI contrast, barium studies, surgical hardware in the spine or hip, and fractures in the areas being scanned.
Ask where the report goes
Confirm you will get the full report with T-scores and a recommendation for the next scan, not only a summary. If you are 65 or older, check the guidelines on Medicare coverage before choosing between insurance and a cash-pay scan.
Keep your records together
Save every report. Because comparisons are only meaningful on the same type of machine and with consistent positioning, an old report from a different facility can be hard to compare against. Ask for the images or data if you plan to change clinics.
FAQ
Can bone density be recovered after a fracture?
Partly. Bone loss throughout the skeleton can begin within weeks of a fracture and last up to 24 months, and bone quality may not fully return to its earlier level, especially in older adults. Treatment, nutrition and exercise can slow or reduce further loss, and some medications increase density.
Should I get a DEXA scan after every fracture?
Not necessarily. A scan is most useful after a low-trauma fracture, particularly at the hip, spine or wrist, in adults 50 and older. A break from a major accident is usually not a sign of weak bones, so ask your doctor which category yours falls into.
How soon after a fracture should I be tested?
Soon, because the risk of another fracture is highest in the year after the first. Do not let testing delay treatment, though. Guidance says follow-up bone density testing should not hold up treatment for secondary fracture prevention.
When should I rescan?
Intervals are individualized by age, baseline density, treatment type and other risk factors. Many people repeat a scan one to two years after starting treatment, but your doctor decides. Use the same facility and scanner when you can.
Does weight loss affect a DEXA bone scan?
It can. Changes in weight or fat mass may affect the precision and accuracy of the measurement. Record your weight at each scan, and ask the technologist to position you consistently.
Sources
- BHOF clinician guidance on osteoporosis (2023)
- BHOF Clinician's Guide to Prevention and Treatment of Osteoporosis
- BHOF osteoporosis order set (2023)
- World Health Organization: fragility fractures
- Systemic Bone Loss After Fracture (PMC)
- Osteoporotic Fractures: Diagnosis, Evaluation, and Significance
- ISCD Official Adult Positions 2023
- Updated practice guideline for dual-energy X-ray absorptiometry (PMC)
- Bone Mineral Density: Clinical Relevance and Quantitative Assessment (PMC)