The world’s first 4-Bar Hydraulic microprocessor stance and swing phase controlled knee. Nabtesco, leaders in microprocessor knee technology, have once again driven innovation forward with a new design. Nabtesco is in pursuit of the world’s safest knee. The unique concept boasts a dual safety system based on inherent polycentric stability factors and microprocessor control. The ALLUX knee heightens safety and security while providing exceptional functionality for the user.