of a process to approximate the volume for user 39 s leg under direction of a microcontroller first analog to digital conversion of voltage measured across a plurality of stretchable wires is performed at 402 control then proceeds to 404 at which the circumferential length of the stretchable wire is calculated for each wire as described in detail in relation to fig3 control then proceeds to 406 at which a volume of the leg may be calculated using the calculated circumferences as mentioned above the volume of the leg may include the lower leg portion and or ankle portion of the leg control then proceeds to 408 at which the calculated volume can be transmitted to a user and or a remote caregiver and communicated to the user via visual and or audible communications e g on a user 39 s mobile computing unit in further detail the approximate volume of the leg may be calculated by approximating the upper leg is as a cylinder thus the distance e g height between each the wires for which circumference has been calculated may be constant and known for example the distance between the bottom wire 115 and the middle wire 114 illustrated in fig1 a and 1b may be denoted u201c a u201d the distance between the middle wire 114 and the top wire 104 illustrated in fig1 a and 1b may be denoted as u201c b u201d the distance between the top wire 104 and the top of the brace 103 on the upper leg 103 is also known this distance is called u201c c u201d in this example the volume of the section of the leg covered.