Prostheses and orthopaedic splints are designed to make life easier and provide greater freedom of movement, and the demands placed on them are correspondingly high. The material should be able to withstand the strain, but at the same time not be too heavy so as not to tire the wearer. It should be able to be used anywhere, for swimming in salt or chlorinated water, in sand, in plus and minus temperatures. Even creams and medical products should not restrict its function or stress the material. Plastic bearings from igus are made for precisely such applications and fit perfectly into designs with high requirements.