However things were more difficult in his everyday life. Walking outdoors turned out to be a challenge. Christoffer tried many different prosthetic feet, but couldn’t find any that were good enough. The smallest hole or stone made him lose his balance and fall over, despite the fact that he was very fit. He was forced to use a wheelchair though he didn’t want to.
So, as part of his training to become a development engineer, he researched why his balance was not good enough, and arrived at the conclusion that it was the restricted mobility in the prosthetic foot that was the problem. As he wanted to be able to be outside and not be dependent on a wheel chair, in partnership with orthopaedic technicians and universities, he started to develop his own foot prosthesis. The development resulted in Xtend Foot, a prosthetic foot with greater lateral turning capacity, which moves more like a human foot and adapts to the surface if you tread on something uneven. Which enables the user to walk safely and securely, both outside and indoors. And it was a world-first innovation.