1. What is BMI for Amputees?

BMI (Body Mass Index) for amputees is calculated using adjusted weight to account for missing limbs. This provides a more accurate assessment of body composition than standard BMI calculations for individuals with limb loss.

2. How Does the Calculator Work?

The calculator uses the standard BMI formula with adjusted weight:

Where:

• Adjusted Weight — Actual weight plus estimated weight of missing limbs
• Height — Measured height in inches
• 703 — Conversion factor to get BMI in kg/m² when using pounds and inches

Explanation: The equation adjusts for the missing body mass to provide a more accurate BMI calculation.

3. Importance of Adjusted Weight

Details: For amputees, standard BMI calculations underestimate body fat percentage because they don't account for missing limbs. Adjusted weight adds estimated weight percentages based on which limbs are missing.

4. Using the Calculator

Tips: Enter adjusted weight in pounds (actual weight plus estimated weight of missing limbs) and height in inches. All values must be valid (weight > 0, height > 0).

5. Frequently Asked Questions (FAQ)

Q1: How do I calculate adjusted weight?
A: Add these percentages to your actual weight based on missing limbs: Hand (0.7%), Forearm and hand (2.3%), Whole arm (5%), Foot (1.5%), Lower leg and foot (5.9%), Whole leg (16%).

Q2: What are standard BMI categories?
A: Underweight (<18.5), Normal (18.5-24.9), Overweight (25-29.9), Obese (≥30). These may need adjustment for amputees.

Q3: When should amputees use this calculator?
A: Whenever assessing nutritional status or body composition, especially when tracking changes over time.

Q4: Are there limitations to this calculation?
A: It doesn't account for muscle mass variations or different body compositions. Other measures like waist circumference may also be helpful.

Q5: Should BMI interpretation differ for amputees?
A: Yes, consult with healthcare providers as standard BMI categories may not directly apply to amputees.