top of page
Freedom Quattro front with background.jpg


Engineered to exceed expectations

PDAC Verified.png

The PROTEOR QUATTRO Microprocessor Knee is designed to be more intuitive, more personalized, and more adaptable. With patented valve technology, advanced customization options, extended battery life, and remote updates, the QUATTRO gives you more of exactly what you need to live the life you want.

More intuitive for elevated security and dependability

  • QUATTRO Control Technology’s patented valve for effortless transitions between activities

  • Three hyper-responsive sensors read body movements

  • Stumble recovery determines appropriate resistance to recover more naturally


More personalized for a custom experience

  • Up to 20 custom modes

  • Patient app for mode selection and refinement

  • Clinician app for easy set up and calibration

  • Shortest build height for a wider selection of ankles and feet


More adaptable for fewer interruptions

  • Battery life of over 2 days plus booster

  • Water-resistance (IP67 rating) for full submersion

  • No service interval for 3 years

  • Remote transmission of cadence data

  • Remote firmware updates

PDAC Verified.png
bottom of page