Five New Microprocessor Knees and Ankles/Feet to Add to Our Website

BionicM Powered Foot Featured Image

As our list of Current Options for Bionic Legs shows, we currently maintain information on 10 microprocessor knees, 7 microprocessor ankles, and 1 complete bionic leg (i.e. an integrated microprocessor knee and ankle).

Unfortunately, all those devices are made by only five companies — a situation that slows innovation and stifles price competition.

Dissatisfied, we did a worldwide sweep and managed to find five new devices that push the existing boundaries in some way.

Odyssey Ruggedized Ankle Prosthesis

This is one of the most exciting prototypes that we’ve ever seen for a microprocessor ankle/foot. There is a gaping hole in the existing microprocessor ankle/foot lineup for durable devices. This has shown up in high repair rates in our User Satisfaction Survey data. To have a rugged waterproof and dustproof ankle/foot would help address this issue.

Unfortunately, Ossur bought this technology in late 2019, meaning it’s going to add to the existing monopoly on microprocessor ankles/feet. Still, it appears as if commercialization is not too far off, so we’ll continue to monitor the situation and report on any developments as soon as they occur.

Powered Knee Joint and Powered Foot by BionicM

BionicM is a Japanese company that lists two lower-limb bionic devices on its website: the Powered Knee Joint and Powered Foot, both still in the prototype phase.

As is often the case with engineering-centric startups, they have created a bit of confusion by using another product name — the Powered Prosthetic Leg — which is not listed in the Product section of their website. But we have recently confirmed that the Powered Prosthetic Leg is in fact the Powered Knee Joint.

Regardless, BionicM is a true breath of fresh air in the lower-limb bionics market. We don’t yet have a timeline for their official launch dates or their pricing, but we’ll write detailed articles on both devices as soon as more information becomes available.

A Bionic Ankle/Foot from Axiles Bionics

Axiles Bionics is a spin-off from Brubotics (Vrije Universiteit Brussel, Belgium) that specializes in robotics, artificial intelligence, and human biomechanics. They strive to improve quality of life with assistive robotics, and their first focus is with below-the-knee amputees by bringing the next-generation bionic feet to the market.

With 15 years of academic research, both in robotics and artificial intelligence, Axiles Bionics started working on the development of their first bionic foot product in 2019, which is expected to be launched in the coming years. According to dr. ir. Pierre Cherelle (Founder CEO of Axiles Bionics), they’re developing a technology with unmatched human-like capabilities that will adapt to the user over time. Simultaneously, they aim to make it affordable so that everyone can benefit from their technological advances.

We had a great meeting with Mr. Cherelle and learned many new things about the natural human gait and the opportunities for bionic ankles/feet to restore that gait. We will write an in-depth article on this new device as soon as Axiles is ready.

SLK Multi-Matrix Microprocessor Knee from DAW Industries

This knee is a recent addition to the microprocessor knee market (2019) but it is not actually made by DAW, which is an American company. It comes from a Taiwanese company by the name of Teh Lin Pros. & Ortho. Inc.

We did not detect this knee in our original research because, while DAW does market directly to clinics, it does not appear to put much effort into marketing to the general public. For example, it only created its YouTube channel in late 2019 and has since amassed a grand total of 13 subscribers. Its videos lack marketing polish, and it doesn’t appear to have any notable social media presence. Frankly, it is almost as if the company is intentionally trying to fly below the consumer radar.

However, we have become quite interested in this microprocessor knee for the following reasons:

  • It has one version for transfemoral amputees and another for knee disarticulations.
  • It uses a pre-programmed matrix based on the patient’s weight, activity level, and residual femur length for its initial configuration. Thereafter, it uses self-learning technology to do the rest of the programming on the patient’s behalf. In fact, it continues to apply this self-learning technology to adjust itself as a patient’s gait changes or progresses.

Therefore, we have decided to write a more detailed article on this knee in the coming weeks, and also to add it to our lists and all other relevant articles.

Microprocessor Knees That We’ve Decided to NOT Cover

There are several existing microprocessor knees that we have decided to exclude from our website. We were reminded of this fact during our search for new devices. Here are the names of those devices and why we’ve decided to exclude them:

  • SmartIP from Blatchford. Old technology that actively manages only the Swing Phase and not the Stance Phase of walking. For an updated Blatchford microprocessor knee, see the Orion instead.
  • Hybrid Knee, Intelligent Knee Single Axis, Intelligent Knee Four-bar Axis, all from the Japanese company, Nabtesco. In September 2018, Proteor USA became Nabtesco’s exclusive distributor for prosthetic knees in the U.S. Proteor does not sell or distribute these three older microprocessor knees. It only carries the newer Allux Knee, so we’ve decided to do the same.

Related Information

For a comprehensive description of all current upper-limb technologies, devices, and research, see A Complete Guide to Bionic Legs & Feet.