How do I calculate BMI for amputee?

Written by kathryn hatter
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How do I calculate BMI for amputee?
Calculate BMI for an amputee. (scale image by jedphoto from

Body Mass Index (BMI) measures the ratio between height and weight to determine a healthy weight range. If a patient has an amputation, you must adjust the weight measurement to reflect the missing limb in order to figure an accurate BMI. By adding a percentage to the actual weight of the person, you can calculate the BMI for an amputee to help analyse weight.

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  1. 1

    Weigh the person without a prosthesis and write this measurement down.

  2. 2

    Use a chart to determine the weight of the missing body part(s). For example, a missing hand comprises .7 per cent of the total body weight, an arm comprises 5 per cent and an entire leg comprises 16 per cent.

  3. 3

    Multiply the person's weight by the percentage for the appropriate body part(s) to find the estimated amount of weight represented by the missing limb(s).

  4. 4

    Add the weight and the estimated weight of the missing body part(s) together. Multiply this by 703.

  5. 5

    Measure the person's height without shoes. Multiply this height measurement by itself (square it).

  6. 6

    Divide the total from step 4 by the squared height figure to determine the adjusted BMI.

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