With the increase of humanatarian prosthetic/orthotic projects a partnership between "Concept et Realisation (CR) Equipment company and the ICRC was established to meet the demand of polypropylene components.
A central location for component production has ugraded quality and standardized quality control.
The polypropylene alignment system was developed by Guy Nury, a Frenchman in Colombia and was known as the Polypropylene Colombian Alignment System (PPCAS). It is now called the concave cylinder.
This system is made entirely of recycled polypropylene. It is fully capable of making proper alignments in flexion, extension, adduction and abduction(10 degree). In addition, when required, antero-postero translation and medio-lateral translation are also possible ( 10 mm ).
Cups and discs are used to connect the concave cylinder alignment system, the socket, and other components such as the knee.
The knee-joint currently produced at CR Equipment is made of injected polypropylene, brass bushings and a connecting tube of stainless steel to avoid corrosion.
