Our Solution (Design)

Providing a solution to the need for an affordable transtibial (below-the-knee) prosthetic leg is the mission of 2ft Prosthetics. We are confident that our efforts to develop quality, affordable, and easily replicable prosthetic legs will give thousands of amputees a chance to live their lives again, to take pride in enjoying the fruits of their own labor, and to stand with hope. The prosthetic leg that our team of BYU engineering students has designed is a simple design, with the prosthetic leg component made of polyvinyl chloride (PVC), and the socket made of polypropylene (PP).




Performance and Durability of Leg

The Testing Fixture

Over the past several months, the 2ft Prosthetics Team designed and built an air pressure powered testing fixture to test our leg design, pictured below. Special thanks to Ken Forester for machine shop support and Kevin Cole for labview support.


The testing fixture has been extremely useful in help us 1.) quantify the durability of our current design and 2.) test new designs, which we are constantly working on to improve the durability of the leg.

How it Works

Two pistons, powered by pressured air push the foot under the toe and heel, simulating a walking motion. A web cam measures the deflection of the foot on each step, as well as exactly when and how it begins to fail.

While much work remains to improve the fixture, it is up and running and the team has been successfully using it for a couple of months.


A utility patent application was approved and published on May 12, 2011 for the 2ft Prosthetics PVC Prosthetic Leg design.


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