Item Number: QNX0010

  • Your Price
  • Regular price $20,100.00


More Intuitive. Less Intrusive.

Freedom QUATTRO™ Microprocessor Knee by PROTEOR is designed to give users the freedom to live their lives without interruption. With PROTEOR’s innovative H.A.R.T. Control Technology, Quattro™ is the first MPK to provide a unique customized experience that captures user’s distinctive gait patterns. Boasting 20 user modes, remote data capture, outcome measure reporting, and independent resistance for stairs/ramps and sitting, it challenges and drives the status quo for MPK’s to the next level.

• H.A.R.T. Control Technology: Finite customized real time response to gait needs.

• User and Prosthetist App: Streamlined set up, monitoring, customization and cadence reporting are a touch away with the Clinician and Patient Apps.

• No Service Intervals & Field Replaceable Kneepad Cover: Uninterrupted use.

• 20 Programmable Modes: Switching between activities has never been easier.

• Manual Lock: Conveniently located inside the app or via the knee keypad.

• Water Ingress Certified: IP67 tested for occasional submersion in water (submersible up to 1 meter for 30 minutes).

• Shortest MPK Build Height for added versatility in foot selection.

• Remote 3-month Data Capture: Users can choose to email their cadence data to their prosthetist for remote review.

    Technical Specs


    Item N°.




    3.65lbs (1655g)

    Build Height

    8.5" (216mm)

    Knee Flexion


    Proximal Connector


    Threaded Top

    Maximum patient weight

    300lbs /136kg

    Activity level

    K3 / K4

    Battery Life

    2-3 days

    Water resistance



    Product Sheet

    Instructions For Use

    PDAC Verification Letter

    Letter of Medical Necessity

    • L5856, L5828, L5848, L5845, L5850, L5925

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