Rheo Knee Joint
Össur's newly redesigned Rheo Knee ® is a smart prosthetic knee system that was developed after Otto Bock's C-Leg ®. Made in Iceland, the knee follows the same computerised principles as the C-Leg ® but uses different mechanical technology. The Rheo Knee ® uses a microprocessor to monitor the wearer’s walking style and the type of ground which he or she is walking on. It continually learns and remembers any changes. The knee reacts so well that it completely frees the wearer to concentrate on an activity they’re doing as they don’t have to worry about how their replacement knee is working.
The Rheo Knee’s highly advanced artificial intelligence continually monitors the wearer’s walking or running style and instantly recognises any small and subtle variations. Its response is immediate to any changes in speed, terrain or load. As a result, the wearer is able to walk confidently, naturally and at any speed without the fear of falling.
The knee’s actuator technology controls its movements by adapting its own rigidity. Fluid within the actuator contains small metallic particles. When needed, the microprocessor sends a magnetic field through the fluid, which becomes thicker as a result of the particles, stiffening the joint. As a result of this technology, the knee’s movements and responses are both smooth and rapid through every phase of the ambulatory cycle. The effort of walking is reduced to a minimum and the gait is smoother and more natural.
The Rheo Knee ® provides enhanced security and contains multiple safeguards against unintentional stance release, which means that it is far less likely to buckle at critical moments.
Because of its continual monitoring, any small changes in gait are recognised automatically, and stance support is instantaneously activated to protect the user from a possible slip or fall.
The knee’s highly developed technology is extremely easy to use. Its plug and play concept allows the prosthetist to swiftly recognise the best set-up parameters for the wearer. This is just as easy for the wearer as after just a few steps the knee is already adapted to the best possible stance support and has settled into a smooth swing. This knee is so smart that it adapts automatically to individual walking styles and unusual surroundings, constantly learning and improving its response as time goes by.
The Rheo Knee ® is powered by a small battery that lasts up to 48 hours and can be recharged overnight. It can be charged at home or in a vehicle and it takes two to four hours to fully charge. The battery can be switched off whenever the knee is not in use.