From early rehabilitation to full recovery…
go anywhere!

Go anywhere


From early rehab to full recovery - go anywhere!

From rehab, to the home and office, to the gym and the trail, RHEO KNEE XC confidently goes anywhere.

Smooth Walking

Automatic Cycling Recognition

Obstacle Avoidance

Step-Over-Step Stair Ascent

Smooth Transition To Running

For Prosthetists / Medical Professionals

We do things differently. That’s why, while other leading microprocessor knees still employ traditional hydraulic solutions, RHEO KNEE XC features the cutting-edge, highly-responsive magnetorheologic technology popularized by the aerospace and automotive industries. And that makes all the difference.

With RHEO KNEE XC you can choose not just a product, but a full solution tailored to each individual user profile.

For the most dynamic experience for users returning to their daily activities, we recommend RHEO KNEE XC with Pro-Flex® and Iceross Seal-In.

Read more

Pro-Flex combines nearly double the range of motion and energy return of a conventional carbon fiber foot with a more natural center of pressure. This is the ideal combination for people who want to enhance their mobility and return to regular activities and to a dynamic lifestyle.

Request a RHEO KNEE XC demo today, so your patients can experience the difference of magnetorheologic technology and go anywhere.


Automatic setup process

Advanced kinematic sensor technology, including gyroscope and accelerometer

Automatic stumble recovery

Confidently step over obstacles

Stable when stepping backwards

Manual extension lock

Weatherproof (IPx4 rating)*

Offers advanced rehab capabilities, including:

  • Automatic cycling recognition for spinning
  • Leg-over-leg stair ascent
  • walking and jogging

For more information, support and documentation, visit the RHEO KNEE XC product page.

*Do not submerse, or expose to chlorinated or salt water.

Clinical Data

Clinically relevant +78 meter increase in average distance walked during 6 Minute Walk Test (6MWT)

Subjects reported feeling less tired after 6MWT on RHEO KNEE XC than on their previous MPK

Improved satisfaction in functioning compared to previous MPK (3.59 versus 3.07 on PEQ MS 12/5 scale of 0-4)

*Sigurjónsson, B., Ikelaar L, Lindgren K, Langlois D, Lechler K, A new microprocessor-controlled knee significantly improves mobility and function in high active TF amputees compared to their previous MPK; OT World Congress 2016 Leipzig, Germany Lecture Research/Practical [5905] Abstract [1872].


RHEO KNEE XC comes with software that lets users quickly check knee status and battery charge level. A professional mode also enables clinicians to easily adjust the functionality for each user and access valuable activity reports. Software is available for PC and iOS devices (iOS8 or later), and communicates wirelessly with Windows PC and iOS devices via Bluetooth.

RHEO KNEE XC supports users from their first steps in early rehabilitation all the way through their return to daily activity. For users with the potential for more demanding activity, RHEO KNEE XC has the capability to help them go anywhere. Check out the videos below to witness the full potential of RHEO KNEE XC.