Allux 4-Bar MPK

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In Pursuit of the World's Safest Knee.

Allux is the world's first polycentric microprocessor stance-and-swing-phase controlled knee. Nabtesco, a leader in microprocessor knee technology, has once again driven innovation forward with a new design. The unique concept boasts a dual safety system based on inherent polycentric stability factors and microprocessor control. The polycentric design's greater toe clearance means less risk of stumbling; however, in case of a stumble, the microprocessor immediately increases the hydraulic resistance to prevent the knee from sudden buckling.

The Allux knee heightens safety and security while providing exceptional functionality to the user.

Nabtesco Proteor-USA