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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 users’ 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.

Technical Specifications

  • Available in Pyramid and Threaded Top Options. QNX0010 (Pyramid) / QNX0011 (Threaded Top)

  • Knee Flexion: 135 °

  • Build Height: 8.5 in (216 mm)

  • User Weight Limit: 300 lbs /136 kg

  • Product Weight: 3.65 lbs (1655 g)

  • Battery Life: 2-3 days

  • PDAC Verified Codes: L5856, L5828, L5848, L5845, L5850, L5950

  • Water Ingress Certified: IP67

  • Patient and Prosthetist Apps (available in both  iOS and Android)

  • Modes: 20 Available Modes; with 19 of the 20 being programmable. 

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Support Tools

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Quattro Prosthetist Guide

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Quattro Patient Guide

Quattro IFU

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Quattro Brochure

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Quattro PDAC Verification Letter

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I Walk Like Jack Poster

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I Walk Like Brenda Poster

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I Walk Like Andre Poster

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I Walk Like Me Poster