BMI Calculator for Individuals with Amputations

BMI Calculator for Individuals with Amputations

Please input your weight (to the nearest whole kilogram) and height in centimeters without commas and dots. Also, specify which parts of the body have been amputated. This calculator is suitable for individuals aged 19 and older.

Adjustment Values for Amputations

This leads to the following Adjustment Table:

Body Part	Adjustment
Hand	0,8
Forearm	2,2
Upper Arm	8,5
Entire Arm	11,5 *
Foot	1,8
Calf	5,3
Thigh	11,6
Entire Leg	18,7 **

* Adjustment values for the entire arm are calculated from individual missing limbs: Hand + Forearm + Upper arm.

** Adjustment values for the entire leg are calculated from individual missing limbs: Foot + Calf + Thigh.

After calculating the weight, taking into account the adjustment values, you can calculate the Body Mass Index.

Example of BMI Calculation with Amputation:

Let’s consider a 40-year-old man who weighs 52 kg and is 1.80 m tall. He has had his leg amputated. Here’s how the formula works:

1. Weight Adjustment for Amputation:
   Adjusted Weight = (52*100)/(100 – 1,8 – 5,3 – 11,6) ≈ 64 kg.
2. Calculate the Body Mass Index (BMI) using the Adjusted Weight and Height:
   BMI = Weight / (Height * Height)
   BMI = 64 kg / (1.80 m * 1.80 m) ≈ 19,8

Therefore, the Body Mass Index for this man, considering the amputation, is approximately 19,8.

Average BMI Test Score Table / BMI Chart:

#	Male BMI	Female BMI
Underweight	< 20	< 19
Normal Weight	20-25	19 – 24
Overweight	26-30	25 – 30
Obesity	31-40	31 – 40
Severe Obesity	> 40	> 40

Underweight, Overweight, Obesity and Severe Obesity: Please see a doctor immediately.

Optimal BMI Test Score Table based on Age / BMI Chart:

Age	Optimal BMI
19-24	19-24
25-34	20-25
35-44	21-26
45-54	22-27
55-64	23-28
Older than 65	24-29

BMI for Individuals with Amputations

BMI when Amputations are present:

The Body Mass Index (BMI) provides relatively reliable values for normal weight or deviations. But what about BMI for Individuals with Amputations? Indeed, there are specially determined “adjustment values” for this, which need to be incorporated into the standard formula. Only when these are considered does a valid picture emerge, allowing the value to be classified in a standard BMI Table.

How is BMI Calculated for Individuals with Amputations?

The BMI in amputations is fundamentally calculated using the same formula as the classic Body Mass Index. However, it’s essential to note that the weight must be adjusted beforehand, accounting for the amputation accurately.

The formula is as follows:

Adjusted Weight = (Weight x 100) / (100 – Adjustment value for the respective body part).

For a hand, a value of 0.8 is considered, while a whole arm is calculated by adding Hand + Forearm + Upper arm, resulting in 11.5. The same approach is also indicated for the absence of an entire leg, which is set at 1.8 for the foot + 5.3 (Calf) + 11.6 (Thigh), totaling 18.7.

Assuming a body weight of 80 kilograms but a missing arm, the calculation would be:

(80 x 100) / (100 – 11.5) = 90.4 kilograms. This 90.4 kilograms are then inserted into the well-known formula for BMI.

Do I Need to Remember the Adjustment Values?

No worries: no one needs to remember the Adjustment values. Our BMI Calculator also considers BMI in amputations and automatically integrates it into the formula. Therefore, it’s only necessary to provide information about weight, height, age, gender, and any existing amputation(s).

How is BMI Classified for Individuals with Amputations?

Regarding classification, BMI for Individuals with Amputations is identical to the classic BMI. Simply put, according to the World Health Organization (WHO), a range between 19 and 26 for ages up to 44 and between 22 and approximately 29 in advanced age is considered desirable. These values are controversial, and some experts believe that muscle mass or fat percentage also plays a role.

Can BMI Always be Determined?

Especially in the healthcare sector, there is sometimes uncertainty about how to determine height and weight. BMI for Individuals with Amputations is particularly problematic when amputations lead to bedridden situations. In these cases, height is usually determined through knee-height measurement, and weight through skinfold measurement. However, it should be noted that this may not always yield valid results, and BMI is just one of many relevant indicators.

Estimated Body Weight Loss (EBWL)

Introduction:

Estimated Body Weight Loss (EBWL) plays a crucial role in the context of assessing and achieving ideal body weight, often integrated into BMI calculators. This measure helps individuals and healthcare professionals gauge the progress and set realistic goals in their weight loss journey.

Integration into Ideal Body Weight Calculators:

• Adjusting Initial Weight: Ideal Body Weight (IBW) calculations often incorporate EBWL to adjust the initial weight based on the targeted weight loss percentage.
• Setting Realistic Goals: EBWL assists in setting achievable goals within the ideal body weight range, aligning with health and wellness objectives.
• Monitoring Progress: Inclusion of EBWL in ideal body weight calculations enables ongoing monitoring of progress, ensuring individuals stay on track toward their desired weight.

Connection with BMI Calculators:

• BMI as a Progress Indicator: EBWL complements BMI calculations by providing a quantitative measure of weight loss progress alongside the qualitative assessment offered by BMI categories.
• Aligning with Health Goals: BMI calculators often consider EBWL(Our does) when individuals have specific health goals, helping them reach a weight associated with optimal BMI ranges.
• Tailoring Interventions: Healthcare professionals use EBWL in conjunction with BMI to tailor weight loss interventions, ensuring a comprehensive and individualized approach.

Practical Application:

• Patient-Centric Approach: Integrating EBWL into BMI calculators promotes a patient-centric approach, considering the unique characteristics and goals of each individual.
• Educational Tool: Acts as an educational tool for individuals, fostering a better understanding of the relationship between weight loss, ideal body weight, and BMI.

Considerations:

• Individualized Factors: The integration of EBWL into calculators acknowledges the variability in individual responses to weight loss, accounting for factors beyond numerical targets.
• Holistic Health Approach: While EBWL offers valuable insights, a holistic approach considering overall health and well-being is essential for comprehensive weight management.

Conclusion:

Estimated Body Weight Loss (EBWL) serves as an integral component within Ideal Body Weight and BMI calculators, enhancing their utility in guiding individuals toward healthier weights. This integration provides a more nuanced understanding of weight loss progress and aligns with personalized health goals.

Questions and Answers:

body mass index in amputees