Ossur’s Proprio Foot includes many of the advanced features found in other foot/ankle systems. However, it uses an inter-step ankle accommodation strategy, which some view as inferior to the within-step strategies used by other bionic foot/ankle systems.
Fillauer’s Raize Foot is a lightweight, low-profile bionic foot/ankle that focuses on optimizing the Stance Phase of the user’s gait. With low water and dust resistance ratings, it is best suited for light duties in clean operating environments.
The Blatchford Elan IC has all of the attributes of its sister product, the Elan Microprocessor Foot. But its new induction charging technology allows it to be completely sealed from the elements, making it waterproof.
The Blatchford Elan Foot is another worthy competitor in the bionic foot/ankle market, allowing users to achieve a smooth gait on many different types of terrain. However, it is not waterproof and lacks the type of user software offered by some of its competitors.
Introduced in 1997, with more than 75,000 fittings worldwide, the C-Leg is a proven bionic knee with excellent stability and dependability. At between $40,000 and $50,000 US for a complete solution, it is in the middle tier of pricing for bionic knees.
Ossur’s Rheo Knee is the only bionic knee to use a magnetorheological fluid (MRF) to manage its level of resistance. This makes the Rheo Knee more reactive to movements of the residual limb than its hydraulic competitors.
Ossur’s Power Knee is the only bionic knee that augments the user’s residual limb with electric power. This significantly reduces the user’s energy expenditure while also assisting in tasks like standing and ascending stairs. It also helps ensure greater ground clearance during the Swing Phase.
The latest version of Nabtesco’s Allux Knee (Allux 2) was launched in the U.S. in June 2017. Now distributed by Proteor USA, the Allux has some interesting features, especially its use of a 4-bar linkage system.
The Plie Knee has some unique features that draw both supporters and detractors. While it still sells at an attractive price, its recent acquisition by Proteor USA, scheduled to close by the end of 2020, justifies a wait-and-see approach by prospective purchasers.
Blatchford’s latest version of the Orion Knee (Orion 3) has closed the technology gap with other leading bionic knees in the same price range. The one remaining question is: do prosthetists trust it as much they do its competitors, especially regarding service and support?