QUATTRO 2™ by PROTEOR is the next generation of microprocessor knee technology, engineered around three core commitments: Motion, Adaptability, and Proof. Built on everything that made the original legendary, QUATTRO 2 delivers a stronger frame, a faster processor, and real-time adaptive movement, expanding access and outcomes for more patients than ever.
A Reinforced Frame. A More Powerful Processor.
QUATTRO 2™ doesn’t just sense movement. It adapts in real time. A 10x faster microprocessor delivers ultra-responsive adjustments with every step. A reinforced frame now supports up to 330 lbs /150 kg, expanding your patient population. Add an IP-68 water rating that means rain, puddles, and the shower are never a second thought, and a stair ascent experience unlike any other MPK on the market, engineered differently from the ground up.
At just 8.5 in (21.6 cm), it remains the shortest MPK on the market, offering the widest compatibility with feet, ankles, and running blades.
What’s New with QUATTRO 2™
Stair Ascent Functionality: Natural, intuitive stair climbing powered by a faster processor and reinforced frame.
10x Faster Microprocessor: Real-time adaptive response to every movement, so patients focus on living.
330 lbs / 150 kg Weight Limit: A stronger frame that expands access to more patients than ever.
IP-68 Water Rating: Rain, puddles, the shower. Patients live their lives without thinking twice.
135° Knee Flexion: Maximum range of motion for natural movement across daily activities, from stairs to uneven terrain.
USB-C Charging: A 2–3 day battery, one cable, no fuss. (Charger sold separately.)
36-Month Warranty: Built to last, with optional 2- and 3-year extensions available.
See the PROTEOR QUATTRO 2™ in Action.
QUATTRO 2 moves with your patients, every step of the way.
Full PROTEOR QUATTRO 2™ YouTube Playlist. Experience the Evolution now