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Now weatherproof

The RHEO KNEE 3 provides the most natural knee function among all microprocessor knees because it continuously adapts to the user and the environment while providing excellent stability and safety. 

Weatherproof design allows exposure to splashing of water.


Smart gait detection, including kinematic sensor technology, ensures stability and dynamic response in every situation.

Advanced actuator and resistance control ensure best possible resistance, e.g. more support in stair descent and minimum effort needed in level ground gait.

Magnetorheologic technology enables an instant response so that users never have to wait for the knee to catch up with them.

Effortless swing initiation enables a smoother gait, even in crowds and confined spaces.

Advanced extension assist mechanism.

Extension lock mechanism, to lock the knee in full extension and increase safety and comfort under specific circumstances.

ÖSSUR LOGIC app offers two levels of experience one for the user and another for the practitioner.

If desired by circumstances, a manual extension lock can be engaged to lock the knee in an extended position.

Impact Levels

Low Impact

Daily activities involving gentle, steady walking with the use of a walking aid.


Example: Moving around at home, modest walking in the community.

Moderate Impact

Daily activities involving average walking with the ability to vary speed or walking pattern.


Example: Going to the shops, confident outdoor walking.

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