Clinical Fracture Risk Assessment Tool (FRAX®) & Osteoporosis Guidelines
The Telekit FRAX Calculator provides clinicians, general practitioners, rheumatologists, and patients with an offline, high-precision decision-support engine. By evaluating independent epidemiological risk factors alongside optional dual-energy X-ray absorptiometry (DXA) femoral neck BMD T-scores, this tool delivers immediate 10-year fracture probability stratification aligned with NOF (National Osteoporosis Foundation) and NOGG (National Osteoporosis Guideline Group) standards.
How to Perform a FRAX Clinical Assessment
Input Demographics
Enter patient age (40–90 years), sex at birth, and weight/height in Metric (kg/cm) or Imperial (lbs/in) units.
Toggle Risk Factors
Select Yes/No for 7 key CRFs: prior fracture, parental hip fracture, smoking, steroid therapy, RA, secondary osteo, and alcohol.
Add Optional DXA BMD
Provide femoral neck DXA T-Score if densitometry has been performed to refine individual microarchitectural precision.
Review & Export Report
Inspect color-coded MOF & Hip probability gauges, NOF/NOGG treatment thresholds, and download JSON, CSV, or Markdown summaries.
Clinical Risk Factors & Hazard Ratio Multiplier Matrix
| Risk Factor / Parameter | Clinical Definition | Hazard Ratio (HR) | NOF/NOGG Clinical Guidance |
|---|---|---|---|
| High Risk Tier | MOF ≥ 20.0% OR Hip Fracture ≥ 3.0% | Exceeds Threshold | Pharmacological therapy strongly advised (Bisphosphonates, Denosumab, Teriparatide) |
| Moderate Risk Tier | MOF 10.0–19.9% OR Hip Fracture 1.5–2.9% | Intermediate | Perform DXA scan, optimize diet (Calcium >1000mg/d, Vit D >800 IU/d), weight-bearing exercise |
| Low Risk Tier | MOF < 10.0% AND Hip Fracture < 1.5% | Baseline | Reassurance and lifestyle counseling; repeat assessment in 2–3 years |
| Previous Fragility Fracture | Spontaneous or low-trauma fracture occurring in adulthood | 1.85x HR | Strongest single independent predictor of future fracture events |
| Oral Glucocorticoids | Prednisolone ≥ 5mg/day (or equivalent) for ≥ 3 months | 1.70x HR | Suppresses osteoblast activity; evaluate for prophylactic antiresorptive therapy |
| Parental Hip Fracture | Maternal or paternal history of fractured hip | 1.65x HR | Major genetic susceptibility marker independent of bone mineral density |
| Secondary Osteoporosis | Type 1 diabetes, osteogenesis imperfecta, untreated hyperthyroidism | 1.40x HR | Impairs bone quality and cellular turnover |
WHO Bone Mineral Density (DXA) Classification Standards
| WHO Diagnostic Category | T-Score Standard Deviations (SD) | Bone Microarchitecture Status | Clinical Implications |
|---|---|---|---|
| Normal | T-Score ≥ -1.0 SD | Within 1 SD of young adult female mean | Standard bone mass; baseline preventative care |
| Osteopenia (Low Bone Mass) | -2.5 SD < T-Score < -1.0 SD | Mild to moderate microarchitectural thinning | Increased fracture surveillance; assess with FRAX for treatment need |
| Osteoporosis | T-Score ≤ -2.5 SD | Severe structural loss and cortical thinning | Diagnostic of osteoporosis; pharmacological therapy indicated |
| Severe / Established Osteoporosis | T-Score ≤ -2.5 SD + Fragility Fracture | Established bone failure with documented structural collapse | Very high fracture risk; consider anabolic or potent antiresorptive agents |
Osteoporosis Prevention & Clinical Best Practices
🥛 Calcium & Vitamin D Sufficiency
Target daily dietary or supplemental calcium intake of 1,000–1,200 mg and 800–2,000 IU of Vitamin D3 daily to maintain serum 25(OH)D levels above 30 ng/mL.
🏋️ Weight-Bearing & Resistance Exercise
Engage in regular progressive resistance training and weight-bearing aerobic workouts (e.g. brisk walking, jogging, stair climbing) 3–4 times weekly to stimulate osteogenesis.
🚭 Tobacco Cessation & Moderation
Eliminate active tobacco smoking and limit alcohol consumption to fewer than 2 standard units daily to prevent direct osteoblast toxicity and accelerated bone loss.
🛡️ Home Fall Prevention Strategies
Address environmental hazards (scatter rugs, inadequate lighting), optimize vision correction, and evaluate medications that cause orthostatic hypotension or sedation.
Desktop Keyboard Shortcuts Reference
High-efficiency keyboard navigation and quick-copy hotkeys for clinical practitioners
| Key Combination | Category | Action & Workflow Behavior |
|---|---|---|
| Alt + P | Assessment & Presets | DevToys Smart Clipboard Auto-Detect (Age, Sex, Weight, Height, DXA T-Score, CRFs) |
| Alt + D | Navigation & Layout | Toggle Star / Bookmark Tool in Favorites (telekit_starred_tools) |
| Alt + V | Navigation & Layout | Toggle 2-Column Split Studio vs Stacked Layout (telekit_frax_layout) |
| Alt + S | Data & Code | Open Developer API & Clinical Script Studio Modal |
| Alt + R | Assessment & Presets | Cycle Pre-tuned Clinical Archetype Presets |
| Alt + K or ? | Navigation & Layout | Open Keyboard Shortcuts Reference Modal |
| Alt + G | Assessment & Presets | Toggle Patient Sex (Female / Male) |
| Alt + U | Assessment & Presets | Toggle Unit System (Metric kg/cm vs Imperial lbs/in) |
| Alt + B | Assessment & Presets | Toggle Femoral Neck DXA T-Score Section |
| / | Navigation & Layout | Quickly Focus Age Input Field |
| Alt + 1 | Quick Formats | 1-Click Quick Copy: 10-Year MOF Risk Percentage |
| Alt + 2 | Quick Formats | 1-Click Quick Copy: 10-Year Hip Fracture Percentage |
| Alt + 3 | Quick Formats | 1-Click Quick Copy: 1-Line Clinical Assessment Summary |
| Alt + 4 | Quick Formats | 1-Click Quick Copy: GFM Markdown EHR Specification Table |
| Alt + 5 | Quick Formats | 1-Click Quick Copy: RFC 4180 CSV Cohort Record |
| Alt + 6 | Quick Formats | 1-Click Quick Copy: Structured JSON Audit Specification |
| Ctrl + Enter | Data & Code | Copy Full Plaintext Clinical Assessment Report |
| Escape | Navigation & Layout | Close Active Modal Dialog or Reset Assessment Parameters |
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Frequently Asked Questions
What is the FRAX® Calculator and what does it measure?
The FRAX® (Fracture Risk Assessment Tool) is an internationally validated clinical algorithm developed to estimate an individual's 10-year probability of sustaining a major osteoporotic fracture (clinical spine, hip, forearm, or humerus) and specifically a hip fracture. It integrates patient demographics (age, sex, weight, height) and 7 core clinical risk factors, optionally incorporating femoral neck bone mineral density (BMD) T-scores.
What are the clinical treatment thresholds under NOF and NOGG guidelines?
Under the National Osteoporosis Foundation (NOF) and UK National Osteoporosis Guideline Group (NOGG) guidelines, pharmacological osteoporosis therapy (such as bisphosphonates or denosumab) is strongly recommended when the calculated 10-year probability of a Major Osteoporotic Fracture (MOF) is ≥ 20.0% or the 10-year probability of a Hip Fracture is ≥ 3.0%. For intermediate risk, a DXA scan and lifestyle optimization are advised.
Can I use the FRAX Calculator if DXA BMD test results are unavailable?
Yes. FRAX was purposefully calibrated to function effectively without bone densitometry. When femoral neck BMD T-score is omitted, the engine computes probabilities based solely on clinical risk factors and anthropometry, which closely track population risk.
How does Body Mass Index (BMI) influence fracture probability?
Low Body Mass Index (BMI < 20 kg/m²) is an independent clinical risk factor for fragility fractures due to reduced soft tissue cushioning during falls and lower mechanical skeletal stimulation. Conversely, higher BMI provides some mechanical cushioning, though obesity can still be associated with impaired bone quality.
Why are oral glucocorticoids considered a high-impact risk factor?
Oral glucocorticoids (e.g. prednisolone ≥ 5mg/day for ≥ 3 months) directly inhibit osteoblast bone formation, stimulate osteoclast-mediated bone resorption, and reduce intestinal calcium absorption. Glucocorticoid exposure confers a 1.70x hazard multiplier on osteoporotic fracture risk.
Is my personal medical and health data private?
Yes, 100%. All computations in the Telekit FRAX Calculator are executed entirely within your web browser's JavaScript engine (in-memory). No patient metrics, health information, or demographics are transmitted across the network or stored on remote servers.
What keyboard shortcuts are supported in the FRAX studio?
You can use 'Alt+P' for DevToys Smart Clipboard Auto-Detect, 'Alt+D' to toggle star/favorite bookmarking (stored in telekit_starred_tools), 'Alt+V' to switch between 2-Column Split Studio and Full-Width Stacked layouts, 'Alt+S' to launch Developer API Code Snippets, 'Alt+R' to cycle presets, 'Alt+1' through 'Alt+6' for 1-click quick-copy formats (MOF %, Hip %, 1-line summary, Markdown table, CSV record, JSON audit), 'Alt+G' to toggle Sex, 'Alt+U' to switch units, 'Alt+B' to toggle DXA BMD, '/' to focus the Age input, 'Ctrl+Enter' to copy the full clinical report, and 'Escape' to dismiss modals or reset.
How do I integrate FRAX risk calculations into clinical apps and EHR systems?
Click the '💻 API Code' button (or press Alt+S) to open the Developer API Code Snippets Studio. We provide verified, production-ready code implementations in TypeScript, Python 3, JavaScript, Go, Rust, and cURL that implement the FRAX exponential risk formula and WHO diagnostic classification.
How can I export patient fracture risk assessments for clinical documentation and EHR audit trails?
The studio offers 1-click clinical export actions: Copy Formatted Assessment Report (Ctrl+Enter), Copy Markdown EHR Summary Table, Download Structured JSON Clinical Audit Report, Download Cohort CSV Record, and Print Medical Summary Sheet (window.print()). All files are formatted for immediate inclusion into electronic health record (EHR) charts.
How does the FRAX model calculate population baseline fold multipliers?
The model calculates the patient's individual 10-year fracture probability and compares it to the epidemiological baseline risk of an age- and sex-matched individual with zero secondary clinical risk factors and average BMI. The resulting Fold Increase metric (e.g. 2.4x Baseline) indicates how much higher the patient's risk is relative to their age group cohort.