A perfect balance of stability and dynamics. RHEO KNEE 3 incorporates tried, tested and proven technology, along with a number of improvements to make life that little bit easier.


Ossur RHEO KNEE® is an advanced knee that allows its users to focus on their chosen activity, instead of having to think about how they are walking. The RHEO KNEE® can recognize and respond even better to the most subtle changes in walking speed and terrain. Using sophisticated artificial intelligence, it continuously learns and adapts to walking style and environment. As a result, it restores the ability to walk naturally, comfortably, and confidently at any speed.


RHEO KNEE 3 helps users to feel in control at all times and takes confidence to a whole new level:

  • Feel totally confident and safe, even on stairs, ramps and uneven ground
  • Change speed and direction with absolute ease
  • Move more naturally, even in confined spaces
  • Think less about what to do and how best to move
  • Walk farther, using less energy, and maintain an active lifestyle

The bonus for the average user is that it is ultra stable, while the more active person will benefit from the extra functionality.