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Got questions? Call us on 0800 471 4974

Got questions? Call 0800 471 4974

Will the iWALK crutch fit me?

The general rule is one size fits all, for heights from 4’10” to 6’6”. But don’t buy it just yet, there’s something we need to check.

What matters most is leg length. But since most people don’t know their leg length, we start with height.
This means that if you’re between 5’1” and 6’1” iWALK 3.0 will fit, no problem. And as long as you’re within the 275 pounds (125kg) weight limit, you need read no further.

For everyone else, we’re going to need to measure you up. Check the diagram below:


Measure both upper and lower leg as shown. If you fall within the ranges shown, iWALK 3.0 will fit you, no matter what your height is.


Measure your thigh at the very top of the leg. If you fall within the ranges shown, iWALK 3.0 will fit you.


If you weigh over 275 pounds (125 kg) or are significantly overweight, iWALK 3.0 is not a suitable option for you.

Body mass index plays an important part in how the crutch functions. This is because to the extent possible, you want the iWALK3.0 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 stabilise 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.

These are clinical, mechanical limitations of a one-size-fits-all product. Your safety and satisfaction are our first concerns, so if you’re plus size, it’s essential that you understand the limitations of the iWALK 3.0 before you self-determine if it’s right for you.

The chart below gives general guidelines for height vs maximum weight. Please understand that this chart is based upon statistical averages for body mass index among the adult population and is only a starting point in determining if your body mass will complicate or inhibit you from adapting to the iWALK 3.0 knee crutch.

4'10" - 5'1" 140
5'1" - 5'4" 160
5'4" - 5'6" 190
5'6" - 5'9" 215
5'9" - 6'1" 245
6'1" - 6'4" 260
6'4" - 6'6" 275
147.5 - 155.0 63.5
155.0 - 162.5 72.5
162.5 167.5 86.0
167.5 175.5 97.5
175.5 - 185.5 111.0
185.5 - 193.0 118.0
193.0 - 198.0 125.0