Bone density is not uniform across your skeleton. Different parts of your body are made up of different proportions of bone types, are affected differently by hormonal changes, and respond differently to the mechanical demands placed on them. This is why your T-score at the spine and your T-score at the hip can tell quite different stories.

Two types of bone

Your skeleton is made up of two types of bone tissue. Cortical bone is the dense, hard outer shell. It makes up about 80 percent of your skeleton and is found predominantly in the long bones of the arms and legs. Trabecular bone is the spongy, latticed inner tissue. It is more metabolically active, and more vulnerable to the hormonal changes of menopause. It makes up a higher proportion of the spine and hip.

Because trabecular bone turns over faster and responds more quickly to estrogen loss, it tends to show the effects of bone density decline earlier. This is why the spine is often the first site to show significant loss.

Why the spine score can be misleading

The lumbar spine is the most sensitive site for detecting early bone loss. It is also the most prone to interference. Osteoarthritis, calcified ligaments, previous fractures, and even aortic calcification can artificially inflate the BMD reading at the spine, making it appear denser than it actually is. This means a spine score can sometimes look better than it really is, particularly in older women.

Your doctor will take this into account when interpreting your results, which is one reason the hip score is often considered the more reliable measure in women over 65.

Why the hip score carries more weight

Hip fractures are the most serious consequence of osteoporosis. They frequently require surgery, carry significant risks of complications, and are associated with loss of independence and, in older women, increased mortality. Because of this, the hip T-score carries considerable clinical weight, particularly when making treatment decisions.

The hip measurement on your report may include several sub-regions including the femoral neck, the total hip, and sometimes the trochanter. Your doctor will typically focus on the femoral neck and total hip values.

Which score determines your diagnosis?

Your overall diagnosis is based on the lowest T-score across all sites measured. If your spine shows -2.6 and your hip shows -1.8, your diagnosis is osteoporosis based on the spine result. The full picture matters, but the most significant number sets the classification.

What this means in practice

Different medications have different evidence bases at different sites. Some are particularly effective at the spine, others at the hip. Understanding which of your sites is most affected helps frame the conversation with your doctor about which treatment approach is most appropriate for your specific pattern of bone loss.

If your scores vary significantly between sites, or if your spine score seems unexpectedly good relative to your age and symptoms, it is worth asking your doctor whether they are confident the spine reading is accurate, or whether anything might be affecting it.

Article 5. What happens at your next DEXA scan and how to track progress

INTRO: Your first DEXA scan gave you a diagnosis. Your next one will tell you something arguably more important - whether things are getting better, holding steady, or getting worse. Knowing what to expect from that follow-up scan, and how to make sense of the results when they arrive, helps you turn a number on a page into a meaningful measure of progress.

BODY:

A DEXA scan is not a one-off test. For women with osteoporosis or osteopenia, it is a monitoring tool. One that tells you and your doctor how your bones are responding to treatment, lifestyle changes, and time. The interval between scans, what the results will show, and how to interpret change are all worth understanding before you get there.

When will your next scan be?

The timing of your next DEXA scan depends on your diagnosis, your treatment, and your doctor's clinical judgment. General guidelines suggest:

  • For women with osteoporosis who have started medication: a repeat scan after one to two years of treatment, to assess response
  • For women with osteopenia not on medication: a repeat scan every one to two years, to monitor for progression
  • For women with normal bone density but risk factors: every two years, or as directed by your doctor

If your doctor has not discussed timing with you, ask at your next appointment. Note the date in Lenari so you get a reminder when it is approaching.

What the scan will measure

Your follow-up scan will measure BMD at the same sites as your first (spine, hip, and forearm if included) and produce new T-scores and Z-scores. The key comparison is not just where you are, but how far you have moved from where you started.

Understanding what "change" actually means

Bone density changes slowly. It is normal to see only modest differences between scans, and that is not a sign that treatment is failing. A change needs to be larger than the "least significant change" threshold, typically around 3 to 5 percent, to be considered statistically meaningful rather than just measurement variation.

This is why a small improvement looks encouraging but may not be significant, and why a small decline does not necessarily mean treatment is not working. Your doctor will interpret the numbers in context — considering the margin of measurement error, the site, and your clinical history.

What a good result looks like

The goal of treatment is not necessarily a dramatic improvement in T-score — it is stability. A T-score that has held steady after one to two years of treatment is a success. Bone density that has modestly improved is an excellent result. Even a slower rate of decline than expected can indicate that treatment is doing its job.

As a general rule in bone health, every 1% increase in bone density correlates with a 4% to 5% decreased in fracture risk.

Some women are disappointed when their follow-up scan does not show significant improvement. Understanding that stability is the primary goal and that preventing further loss is what reduces fracture risk helps put the result in the right perspective.

Preparing for your scan

A few practical things to know before your follow-up:

  • Wear comfortable, loose clothing without metal fastenings. Zips, underwire bras, and metal buttons can interfere with the scan
  • Do not take calcium supplements on the morning of your scan. They can affect the result
  • The scan itself takes around 10 to 20 minutes and is completely painless

Photographing your results in Lenari

When your new results arrive, photograph the report in Lenari straight away. Lenari will explain every number and in the future, the second scan comparison feature will show you exactly what changed between your first and second scan, what that change means clinically, and whether your treatment appears to be working. That comparison is one of the most valuable things Lenari will do for you.

Category 3 — Your Fracture Risk

Article 1. What is fracture risk and how is it calculated?

INTRO: Your T-score tells you about your bone density. But bone density alone does not determine whether you will break a bone. Two women can have identical T-scores and face very different levels of fracture risk. Understanding how fracture risk is actually calculated helps you see the full picture of your bone health and why the number your doctor gives you matters more than the number on your DEXA report alone.

BODY:

Fracture risk is a probability. It is an estimate of the likelihood that you will experience a bone fracture within a given timeframe, typically the next ten years. It is expressed as a percentage. A fracture risk of 15 percent means that out of 100 women with your profile, approximately 15 would be expected to experience a fracture within ten years. It is not a certainty. It is a way of quantifying risk so that treatment decisions can be made on evidence rather than guesswork.

Why bone density is only part of the story

Bone density is the most important single factor in fracture risk. But it is far from the only one. Research has consistently shown that a significant proportion of fractures occur in women whose T-scores fall in the osteopenia range, not the osteoporosis range. This is partly because there are simply more women with osteopenia than osteoporosis, and partly because fracture risk is shaped by factors that a DEXA scan cannot measure.

Age is one of the most significant.

A 75-year-old woman with a T-score of -2.5 faces a substantially higher fracture risk than a 50-year-old woman with the same score. This is because age affects bone quality, balance, muscle strength, and the likelihood of falling. The scan looks the same. The risk is very different.

The factors that contribute to fracture risk

Beyond bone density, the following are recognised independent risk factors - meaning each one raises fracture risk regardless of T-score:

  • Age - risk increases significantly with each decade after 50
  • Previous fragility fracture - having already broken a bone from a minor fall or movement is one of the strongest predictors of future fracture
  • Parental history of hip fracture - particularly a mother who broke a hip, which carries an independent genetic and structural risk
  • Current smoking - directly impairs bone formation and increases bone loss
  • Alcohol - consuming three or more units per day is an independent risk factor
  • Glucocorticoid use - long-term use of corticosteroids such as prednisolone significantly accelerates bone loss and increases fracture risk independently of bone density
  • Rheumatoid arthritis - carries an elevated fracture risk beyond what is explained by bone density alone
  • Secondary osteoporosis - bone loss driven by another medical condition, such as coeliac disease, inflammatory bowel disease, or hyperthyroidism
  • Low body weight - a BMI below 19 is associated with higher fracture risk

How fracture risk is calculated

The most widely used tool for calculating fracture risk is the Fracture Risk Assessment Tool (FRAX) developed by the World Health Organization and the University of Sheffield. FRAX takes your T-score and combines it with the clinical risk factors above to produce two estimates: your ten-year probability of a major osteoporotic fracture (spine, hip, forearm, or shoulder), and your ten-year probability of a hip fracture specifically.

The calculation is done using algorithms derived from large population studies across multiple countries, and it has been validated across different ethnicities and regions. Your doctor will input your details to generate your personal FRAX score.

What happens with that number

FRAX scores are used alongside clinical guidelines to determine whether treatment is recommended. In most countries, the threshold for recommending medication is not simply a T-score cutoff. Rather, it is a combination of T-score and fracture risk. A woman with a T-score of -2.0 and multiple additional risk factors may have a higher calculated fracture risk than a woman with a T-score of -2.8 and no other risk factors, and may therefore be more likely to be recommended treatment.

This is why understanding your fracture risk (not just your T-score) gives you a much more complete picture of where you stand and why your doctor is recommending what they are.

What you can do with this information

Some fracture risk factors cannot be changed: your age, your family history, previous fractures you have already had. But several can be modified: smoking cessation, reducing alcohol, managing secondary conditions, and starting appropriate treatment all have a meaningful impact on fracture risk. Understanding which factors apply to you helps you have a more informed conversation with your doctor about which levers are worth pulling.

Article 2. Which fractures are most common in osteoporosis — and why they matter

INTRO: Not all fractures are equal. Some heal well and have little lasting impact. Others are life-changing - affecting mobility, independence, and in some cases, life expectancy. Understanding which fractures are most associated with osteoporosis, how they happen, and what their consequences are helps you understand why prevention matters so much. Plus why the stakes of an untreated diagnosis are higher than many women realise.

BODY:

Osteoporosis-related fractures are called fragility fractures. They occur from a level of force that would not break a healthy bone. The defining scenario is a fall from standing height or less. In more severe osteoporosis, a fracture can occur from a cough, a sneeze, bending forward, or lifting a light object.

CALLOUT: The four sites most commonly affected by osteoporotic fracture are the spine, hip, wrist, and shoulder. Each carries different consequences and a different story about how it happens.

Vertebral fractures - the most common and the most silent

Vertebral compression fractures (fractures of the bones of the spine) are the most common osteoporotic fracture, and the most frequently missed. Unlike hip or wrist fractures, they often do not result from a fall. They happen when the weight of the body on weakened vertebrae becomes more than the bone can bear.

Many vertebral fractures cause no acute pain and go completely undiagnosed. They’re discovered incidentally on X-rays taken for other reasons, or recognised only in retrospect when a woman notices she has become shorter or her upper back has begun to curve.

CALLOUT: Have you noticed you are getting shorter, or that your upper back has begun to curve forward? Even a small loss of height (a centimetre or two over a few years) can be a sign of vertebral fractures that were never diagnosed. Mention it to your doctor.

The cumulative effect of multiple vertebral fractures is what produces the stooped posture many women associate with severe osteoporosis. Each fracture causes a small collapse of the vertebra and over time this affects posture, height, spinal function, breathing, and digestion.

QUOTE: "A woman who has had one vertebral fracture is five times more likely to have another within the following year."

Hip fractures - the most serious

Hip fractures are less common than vertebral fractures, but they carry the most serious consequences. They almost always result from a fall (typically sideways onto the hip) and they almost always require surgery.

  • Approximately 20 to 30 percent of women who suffer a hip fracture die within the following year. Not always from the fracture itself, but from the cascade of complications that follow: immobility, infection, blood clots, and the physiological stress of surgery in older women
  • A further 40 percent never fully regain their pre-fracture level of independence
  • Recovery is prolonged, and outcomes depend heavily on age, general health, and the speed of surgical care

CALLOUT: This is the outcome most women fear when they think about osteoporosis and it is a legitimate fear. But it is also largely preventable with early diagnosis, appropriate treatment, and fall prevention. You are already doing the most important thing: paying attention.

Wrist fractures - often the first warning

Wrist fractures are frequently the first fragility fracture a woman experiences. They typically result from putting a hand out to break a fall, and they are most common in women in their fifties and sixties. They generally heal well but they matter for a different reason.

CALLOUT: A wrist fracture from a minor fall in a woman over 50 is a signal. It indicates that bone fragility is already present and that the risk of a more serious fracture in the future is elevated. If you have had a wrist fracture in the past that was not followed up with a bone density assessment, raise it with your doctor.

Shoulder fractures - less common but significant

Fractures of the upper arm bone near the shoulder are the fourth most common osteoporotic fracture. They typically result from a fall onto an outstretched arm or directly onto the shoulder, and they can significantly affect arm function and quality of life during recovery.

The fracture cascade

One of the most important things to understand about osteoporotic fractures is that they compound.

  • Having one fragility fracture substantially increases the risk of having another
  • The pain, immobility, and loss of confidence that often follow a fracture can lead to reduced activity and muscle loss
  • Reduced activity increases fall risk and accelerates bone loss
  • This cycle becomes harder to interrupt with each fracture

QUOTE: "Breaking a bone is not just an event. It is often the beginning of a cycle. Every fracture prevented is a cascade avoided."

A note on pain

Not all osteoporotic fractures are obvious. Hip fractures are acutely painful and immediately disabling. Wrist fractures are painful and apparent. But vertebral fractures that develop gradually can cause only a dull ache easily mistaken for muscle strain or general back pain.

CALLOUT: If you have persistent or new back pain that you cannot explain, mention it to your doctor in the context of your osteoporosis diagnosis. It is worth investigating particularly if you have not had a vertebral assessment as part of your DEXA scan.

Article 3. How your lifestyle affects your fracture risk

INTRO: Your fracture risk is shaped by factors you cannot change like your age, your genetics, your bone density history. But it is also shaped by factors you can. Understanding how your daily habits interact with bone health gives you a clearer picture of where your risk actually comes from and where you have more control than you might think.

BODY:

Lifestyle factors do not work in isolation. Each one interacts with your baseline bone density, your age, and your other risk factors to produce your overall fracture risk. Some have a modest effect. Others are significant enough to be included as independent variables in FRAX. Which means they raise fracture risk regardless of what your T-score shows.

CALLOUT: You will not be able to change all of these factors. Some, like a history of low body weight in your twenties, are already written. But several are modifiable right now and making changes works alongside medication, not instead of it.

Smoking

Smoking is one of the clearest lifestyle risk factors for osteoporosis and fracture. It reduces estrogen levels, impairs calcium absorption, and increases bone breakdown. Women who smoke reach menopause earlier on average - extending the period of estrogen-related bone loss.

CALLOUT: Stopping smoking has a measurable positive effect on bone health. Former smokers have better bone density outcomes than current smokers, even after years of previous smoking. It is never too late for this to matter.

Alcohol

Alcohol interferes with calcium and vitamin D absorption, reduces bone-building cell activity, and impairs liver function (which is involved in activating vitamin D). High alcohol intake is also associated with an increased risk of falls.

  • FRAX uses a threshold of three or more units per day as an independent risk factor
  • Below that level, evidence on alcohol and fracture risk is less clear
  • The practical message: high intake is a clear risk factor, and moderation is sensible

Physical activity and muscle strength

Exercise influences fracture risk in two distinct ways:

  • Directly - by acting on bone density through mechanical loading
  • Indirectly - by improving muscle strength, balance, and coordination, which reduces the likelihood of falling

QUOTE: "Weight-bearing exercise puts force through the skeleton and stimulates bone formation. Resistance training builds muscle and bone simultaneously. Balance training reduces falls. Each targets a different part of the same problem."

Physical inactivity, by contrast, accelerates bone loss. Even modest, consistent activity matters at every age.

Body weight

Body weight has a complex relationship with bone health:

  • Being significantly underweight (BMI below 19) is an independent fracture risk factor. Low body weight means less mechanical loading on the skeleton, lower estrogen levels, and often lower nutritional reserves
  • Obesity is generally associated with higher bone density but also a higher risk of falling
  • Higher body weight does not eliminate fracture risk

CALLOUT: Women who have had a history of low body weight, disordered eating, or prolonged loss of periods are at elevated risk for osteoporosis — often developing it earlier and more severely than other women. If this applies to you, mention it to your doctor.

Nutrition beyond calcium and vitamin D

Calcium and vitamin D are the most closely associated nutrients but bone health depends on more:

  • Protein is essential for bone matrix formation. Low intake in older women is associated with poorer density and slower fracture recovery
  • Vitamin K2 helps direct calcium into bone rather than soft tissue
  • Magnesium is involved in vitamin D activation and bone crystal formation
  • High sodium intake can increase calcium excretion through the kidneys
  • More than four cups of coffee per day has been associated with modestly reduced calcium absorption

Fall risk - the often-overlooked factor

CALLOUT: Fracture risk and fall risk are related but distinct. A woman can have moderate bone density loss but a very high fall risk due to poor balance, muscle weakness, certain medications, or a hazardous home environment and face a high overall fracture risk as a result.

Medications that increase fall risk include sedatives, sleeping tablets, some blood pressure medications, and certain antidepressants. If you take any of these, it is worth discussing fall risk with your doctor because reducing the likelihood of falling is one of the most direct ways to reduce fracture risk, regardless of bone density.

QUOTE: "You cannot always change your bone density quickly. But you can reduce your risk of falling today."

Article 4. Understanding the FRAX tool and what your score means

INTRO: If you have spoken to your doctor about fracture risk, or looked into osteoporosis treatment guidelines, you have probably heard the word FRAX. It is the most widely used fracture risk assessment tool in the world and understanding how it works, what it produces, and how doctors use it to make treatment decisions gives you a much clearer window into the reasoning behind your care.

BODY:

FRAX is a clinical tool developed by the World Health Organization Collaborating Centre for Metabolic Bone Diseases. It was introduced in 2008 and is now used in more than 80 countries. Its purpose is to calculate the probability that an individual will experience a fracture over the next ten years using bone density data combined with clinical risk factors that have been shown, through large-scale population research, to independently predict fracture risk.

CALLOUT: FRAX does not tell you whether you will fracture. It tells you the probability across a population of people with your profile that a fracture will occur within ten years. A score of 15 percent means 15 in 100 women with your profile would be expected to fracture. 85 would not.

What FRAX calculates

FRAX produces two probability estimates:

  • The ten-year probability of a major osteoporotic fracture - a fracture of the spine, hip, forearm, or shoulder
  • The ten-year probability of a hip fracture specifically

These are expressed as percentages and interpreted alongside national treatment guidelines not as standalone verdicts.

What goes into the calculation

FRAX combines the following inputs to produce your score:

  • Age, sex, weight, and height
  • Previous fragility fracture
  • Parental hip fracture
  • Current smoking
  • Glucocorticoid (corticosteroid) use
  • Rheumatoid arthritis
  • Secondary osteoporosis
  • Alcohol consumption of three or more units per day
  • Femoral neck T-score from your DEXA scan — optional, but significantly improves accuracy

CALLOUT: The algorithm behind FRAX was derived from population studies involving over 60,000 men and women across multiple countries and ethnicities. Country-specific versions exist to account for differences in fracture rates between populations.

How doctors use FRAX scores

FRAX scores are used alongside national treatment guidelines to determine whether medication is recommended. Guidelines set intervention thresholds. These are probability levels at which the benefit of treatment outweighs the risks. These thresholds vary by country and by age.

QUOTE: "What constitutes high fracture risk at 55 is different from what constitutes high risk at 75 because the baseline probability of fracture naturally increases with age. FRAX accounts for this."

This means a FRAX score is never interpreted in isolation. It is a tool that informs a clinical conversation not a simple cutoff that automatically triggers or rules out treatment.

What FRAX does not capture

FRAX is powerful but it has recognised limitations worth understanding:

  • It does not account for the number of previous fractures, only whether one has occurred
  • It does not factor in the dose or duration of corticosteroid use
  • It does not incorporate fall risk directly despite falls being the proximate cause of most fractures
  • It uses femoral neck BMD specifically, other DEXA sites are not incorporated

CALLOUT: Some clinicians adjust their interpretation of FRAX to account for factors it does not capture. A woman with multiple previous fractures, or significant fall risk, may be considered at higher risk than her FRAX score alone suggests. This is a conversation worth having with your doctor.

The difference between high risk and certainty

A high FRAX score does not mean a fracture is inevitable. A low score does not mean you are protected. FRAX estimates probability across a population and individual outcomes always vary.

Using your FRAX score

If your doctor has calculated a FRAX score for you:

  • Ask what it means in the context of your local treatment guidelines
  • Ask what probability threshold they use to recommend medication
  • Ask where your score sits relative to that threshold
  • Ask whether any factors not captured by FRAX, such as fall risk or multiple previous fractures, should adjust how your score is interpreted

CALLOUT: Lenari's fracture risk tool - coming soon - will walk you through the FRAX inputs and help you understand your estimated probability before your appointment, so you can arrive informed and ready to make decisions with your doctor.