Design of a fully passive prosthetic knee mechanism for transfemoral amputees in India

Prosthetic knee


Amos Winter

Research Mentor

Nevan Hanumara

We aim to create a low-cost, high-performance prosthetic knee that uses only passive mechanical elements to generate a normal walking gait. In collaboration with the Jaipur Foot organization in India, the knee is being designed to meet the mobility and stability needs of above-knee amputees in developing countries and offer improved performance over locked and free-swinging joints.

The project includes investigating the fundamental biomechanics of trans-femoral amputees and codifying how changes in lower leg and foot mass affect desired knee torque and hip energy output throughout the gait cycle. With this insight, we are optimizing simple, passive mechanical elements, such as springs and dampers, to create the correct knee torque to induce desired gait kinematics. Our aim is to provide similar levels of performance to high-end, active-controlled knees at a fraction of the cost, and make a prosthetic technology that will be adopted in developing and developed markets.

+ Project media

THESIS: Identification of design requirements for a high-performance, low-cost, passive prosthetic knee through user analysis and dynamic simulation (Yashraj S. Narang)

ARTICLE: A cheaper, high-performance prosthetic knee

WEB: More information on the GEAR Lab site