If you’re tall or short, underweight or overweight, green or blue, we’re not judging you. Let’s get that out of the way.
Body mass index plays an important part in how the crutch functions. This is because to the extent possible, you want the iWALK to become an integral part of your leg. This makes the iWALK behave as though it’s an extension of your actual human leg, which makes walking more natural and intuitive.
The iWALK recruits your upper thigh to stabilize the crutch. The more solid your upper thigh, the less unintentional movement of the crutch. We know that not everyone is a lean, elite athlete, and you don’t need to be. But as body mass increases beyond a certain point, it introduces more “compressible” flesh in the upper thigh area, which inhibits stability of the crutch.
In addition, larger thigh sizes reduce the adjustment range available for the vertical alignment of the crutch. Improper vertical alignment can reduce stability and efficiency of the crutch. The video below shows you why: