Frax Calculator Usa

FRAX® Fracture Risk Assessment Calculator (Simplified Model)

This simplified calculator provides an illustrative estimate of your 10-year fracture risk based on common risk factors, similar to those considered by the official FRAX® tool. Please note: This is a simplified model for educational purposes only and is NOT the official FRAX® algorithm. It should not be used for medical diagnosis or treatment decisions. Always consult with a healthcare professional for accurate risk assessment and personalized advice.

Leave blank if unknown. Lower (more negative) T-scores indicate lower bone density.

function calculateFraxRisk() { var age = parseFloat(document.getElementById('age').value); var sexMale = document.getElementById('sexMale').checked; var weightLbs = parseFloat(document.getElementById('weightLbs').value); var heightInches = parseFloat(document.getElementById('heightInches').value); var previousFracture = document.getElementById('previousFracture').checked; var parentFracturedHip = document.getElementById('parentFracturedHip').checked; var currentSmoker = document.getElementById('currentSmoker').checked; var glucocorticoidUse = document.getElementById('glucocorticoidUse').checked; var rheumatoidArthritis = document.getElementById('rheumatoidArthritis').checked; var secondaryOsteoporosis = document.getElementById('secondaryOsteoporosis').checked; var alcoholUse = document.getElementById('alcoholUse').checked; var bmdTscoreInput = document.getElementById('bmdTscore').value; var bmdTscore = bmdTscoreInput === " ? NaN : parseFloat(bmdTscoreInput); var resultDiv = document.getElementById('result'); resultDiv.innerHTML = "; // Clear previous results // Input validation if (isNaN(age) || age 90) { resultDiv.innerHTML = 'Please enter a valid age between 40 and 90 years.'; return; } if (isNaN(weightLbs) || weightLbs <= 0) { resultDiv.innerHTML = 'Please enter a valid weight.'; return; } if (isNaN(heightInches) || heightInches 0 || bmdTscore = 40 && age = 50 && age = 60 && age = 70 && age = 80 && age <= 90) { totalRiskPoints += 4; } // 2. Sex if (!sexMale) { // Female totalRiskPoints += 1; } // 3. BMI (calculated from weight and height) var weightKg = weightLbs * 0.453592; var heightM = heightInches * 0.0254; var bmi = weightKg / (heightM * heightM); if (bmi = -1.5) { // -1.0 to -1.5 totalRiskPoints += 1; } else if (bmdTscore >= -2.0) { // -1.6 to -2.0 totalRiskPoints += 2; } else if (bmdTscore >= -2.5) { // -2.1 to -2.5 totalRiskPoints += 3; } else if (bmdTscore >= -3.0) { // -2.6 to -3.0 totalRiskPoints += 4; } else { // < -3.0 totalRiskPoints += 5; } } var riskCategory = ''; if (totalRiskPoints <= 3) { riskCategory = 'Low Risk'; } else if (totalRiskPoints <= 7) { riskCategory = 'Moderate Risk'; } else { riskCategory = 'High Risk'; } resultDiv.innerHTML = '

Simplified Fracture Risk Assessment

' + 'Estimated 10-Year Fracture Risk Category: ' + riskCategory + '' + 'Simplified Risk Score: ' + totalRiskPoints + ' points' + 'This is a simplified, illustrative calculation and not a substitute for the official FRAX® tool or professional medical advice. Consult your doctor for an accurate assessment.'; } .frax-calculator-usa-container { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; background-color: #f9f9f9; padding: 25px; border-radius: 10px; box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1); max-width: 700px; margin: 20px auto; color: #333; line-height: 1.6; } .frax-calculator-usa-container h2 { color: #2c3e50; text-align: center; margin-bottom: 20px; font-size: 1.8em; } .frax-calculator-usa-container p { margin-bottom: 15px; font-size: 0.95em; } .frax-calculator-usa-container .calculator-form { background-color: #ffffff; padding: 20px; border-radius: 8px; border: 1px solid #e0e0e0; } .frax-calculator-usa-container .form-group { margin-bottom: 15px; display: flex; flex-wrap: wrap; align-items: center; } .frax-calculator-usa-container .form-group label { flex: 1; min-width: 180px; margin-right: 10px; font-weight: bold; color: #555; } .frax-calculator-usa-container .form-group input[type="number"], .frax-calculator-usa-container .form-group input[type="text"] { flex: 2; padding: 10px; border: 1px solid #ccc; border-radius: 5px; max-width: 250px; box-sizing: border-box; } .frax-calculator-usa-container .form-group input[type="radio"] { margin-right: 5px; margin-left: 15px; } .frax-calculator-usa-container .form-group input[type="radio"] + label { font-weight: normal; min-width: unset; flex: unset; margin-right: 20px; } .frax-calculator-usa-container .checkbox-group { align-items: flex-start; } .frax-calculator-usa-container .checkbox-group input[type="checkbox"] { margin-top: 5px; margin-right: 10px; } .frax-calculator-usa-container .checkbox-group label { flex: 1; font-weight: normal; min-width: unset; } .frax-calculator-usa-container .note { font-size: 0.85em; color: #777; margin-top: 5px; flex-basis: 100%; padding-left: calc(180px + 10px); /* Align with input fields */ } .frax-calculator-usa-container button { display: block; width: 100%; padding: 12px 20px; background-color: #28a745; color: white; border: none; border-radius: 5px; font-size: 1.1em; cursor: pointer; margin-top: 25px; transition: background-color 0.3s ease; } .frax-calculator-usa-container button:hover { background-color: #218838; } .frax-calculator-usa-container .calculator-result { margin-top: 25px; padding: 20px; background-color: #e9f7ef; border: 1px solid #d4edda; border-radius: 8px; font-size: 1.1em; color: #155724; } .frax-calculator-usa-container .calculator-result h3 { color: #2c3e50; margin-top: 0; margin-bottom: 15px; font-size: 1.4em; } .frax-calculator-usa-container .calculator-result .highlight { font-weight: bold; color: #007bff; } .frax-calculator-usa-container .calculator-result .error { color: #dc3545; font-weight: bold; } .frax-calculator-usa-container .disclaimer { font-size: 0.85em; color: #6c757d; margin-top: 15px; border-top: 1px solid #e0e0e0; padding-top: 10px; } @media (max-width: 600px) { .frax-calculator-usa-container .form-group label { min-width: 100%; margin-bottom: 5px; } .frax-calculator-usa-container .form-group input[type="number"], .frax-calculator-usa-container .form-group input[type="text"] { max-width: 100%; } .frax-calculator-usa-container .note { padding-left: 0; } }

Understanding the FRAX® Tool and Fracture Risk

Osteoporosis is a condition that causes bones to become weak and brittle, making them more susceptible to fractures. These fractures, often occurring in the hip, spine, or wrist, can lead to significant pain, disability, and a reduced quality of life. Identifying individuals at high risk of fracture is crucial for timely intervention and prevention.

What is FRAX®?

The Fracture Risk Assessment Tool (FRAX®) is a computer-based algorithm developed by the World Health Organization (WHO) to estimate an individual's 10-year probability of a major osteoporotic fracture (hip, clinical spine, forearm, or shoulder) and hip fracture specifically. It is widely used by healthcare professionals worldwide to guide treatment decisions for osteoporosis.

How Does FRAX® Work?

The official FRAX® tool integrates several clinical risk factors that are known to influence fracture risk. These factors include:

  • Age: Risk increases with age.
  • Sex: Women generally have a higher risk than men.
  • Weight and Height: Used to calculate Body Mass Index (BMI); low BMI is a risk factor.
  • Previous Fracture: A history of prior fracture significantly increases future risk.
  • Parental History of Hip Fracture: Genetic predisposition plays a role.
  • Current Smoking: Smoking negatively impacts bone health.
  • Glucocorticoid Use: Long-term use of steroid medications can weaken bones.
  • Rheumatoid Arthritis: This autoimmune disease is associated with increased fracture risk.
  • Secondary Osteoporosis: Other medical conditions (e.g., Type 1 diabetes, hyperthyroidism, chronic liver disease) can contribute to bone loss.
  • Alcohol Consumption: Heavy alcohol intake (3 or more units per day) is a risk factor.
  • Femoral Neck Bone Mineral Density (BMD) T-score: This is an optional but powerful input from a DEXA scan, providing a direct measure of bone density.

By combining these factors, the FRAX® algorithm provides a personalized risk assessment, helping clinicians determine who might benefit from further evaluation or osteoporosis treatment.

Why is Fracture Risk Assessment Important?

Early identification of individuals at high risk allows for:

  • Preventive Measures: Lifestyle modifications, nutritional advice (calcium and Vitamin D), and exercise programs.
  • Pharmacological Treatment: Medications that can slow bone loss or build new bone.
  • Fall Prevention Strategies: Addressing factors that increase the risk of falls, which are a major cause of fractures.

Interpreting Your Results (Simplified Model)

Our simplified calculator provides a "Simplified Risk Score" and categorizes your risk as Low, Moderate, or High. This categorization is based on an illustrative scoring system for educational purposes. In a real clinical setting, the official FRAX® tool provides specific percentage probabilities for major osteoporotic fracture and hip fracture, which are then used in conjunction with national guidelines (e.g., those from the National Osteoporosis Foundation in the USA) to make treatment decisions.

  • Low Risk: May indicate that lifestyle modifications are sufficient, but regular monitoring is still important.
  • Moderate Risk: Suggests a need for closer monitoring and potentially further discussion with your doctor about preventive strategies.
  • High Risk: Strongly indicates that you should consult with a healthcare professional for a comprehensive evaluation, including a DEXA scan if not already performed, and discussion of potential treatment options.

Disclaimer

This simplified FRAX® calculator is designed for informational and educational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. The actual FRAX® algorithm is complex and proprietary, and this tool does not replicate its exact calculations. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition or your fracture risk. Do not disregard professional medical advice or delay in seeking it because of something you have read on this website.

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