Calculate plantar ratio

The plantar ratio calculated is the ratio between two measurements on the contact area of the foot soles.

Example of plantar ratio calculation:

The resulting numerical value has no units of measurement, being dimensionless. It is a value indicating the type of contact of the foot sole, which can be divided into three groups:

Value	Description
from 0 to 0.3	concave foot
from 0.3 to 0.37	normal foot
over 0.37	flatfoot

How to perform the measurement

After selecting the operation to perform, either on the right or the left foot, the mouse pointer will change its appearance, a floating text and an icon displaying the point to click (which will be blinking) will appear, as in the following example:

Proceed to click all four points; the final calculation is displayed on the image, as in the first example.