By: Keith Smith – Vice President of Engineering, PROTEOR USA

I have learned through experience that good engineering is vital to good products. The RUSH foot is a perfect example of this. The fiber reinforced composite laminate material used in the RUSH foot is state of the art aerospace material. It also has excellent durability and fatigue life properties. This unique composite material, makes the RUSH foot the most dynamic and responsive foot on the market. How did we do this? We designed the laminate sequence to allow several inches of deflection at the toe during extreme loading such as during a basketball game, or under heavy sprinting. This allows full energy return to launch the user when dynamic response is preferred. Under less dynamic loading, such as walking, the foot is compliant under any terrain without being too flexible.

One of the exceptional features designed into the laminate sequence of this foot is the inversion – eversion or multiaxial flexibility of the toe without a split toe design. The problem with splitting the toe is that the toe off of the foot is designed to be more stiff because it has to be able to carry the load on one side of the split (for partial contact loading). The RUSH foot doesn’t have the split toe requirement; therefore, it is a better all terrain foot because it acts as one unit for a more flexible dynamic toe off, and it can easily comply on uneven terrain. For those who understand AOPA requirements, the RUSH foot meets the criteria for the Multiaxial test in order for us to recommend the L5986 code.

Have you seen the full RUSH foot product profile on abilitydynamics.com?