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.