1. What is the FRAX Score?

The FRAX® tool is a computer-based algorithm that calculates the 10-year probability of a major osteoporotic fracture (hip, clinical spine, humerus or wrist fracture) and the 10-year probability of hip fracture. The UK version is calibrated to the epidemiology of fracture and death in the UK.

2. How Does the Calculator Work?

The calculator uses the FRAX equation:

Where all risk factors contribute to the final probability score.

3. Importance of FRAX Calculation

Details: The FRAX score helps clinicians identify patients who would benefit from osteoporosis treatment, particularly those with clinical risk factors but without a bone mineral density measurement.

4. Using the Calculator

Tips: Enter all required information accurately. BMD is optional but increases accuracy when available. The calculator is valid for patients aged 40-90 years.

5. Frequently Asked Questions (FAQ)

Q1: What is considered a high FRAX score?
A: In the UK, intervention thresholds are typically set at ≥20% for major osteoporotic fracture or ≥3% for hip fracture.

Q2: How accurate is FRAX without BMD?
A: FRAX is reasonably accurate without BMD, but including BMD measurements improves precision, particularly in intermediate-risk patients.

Q3: Can FRAX be used for younger patients?
A: The calculator is validated only for ages 40-90. For younger patients, clinical judgment is required.

Q4: How often should FRAX be recalculated?
A: Reassessment every 2-5 years is reasonable, or when new risk factors emerge.

Q5: Does FRAX account for falls risk?
A: No, FRAX doesn't incorporate falls risk. This should be considered separately in clinical decision-making.