Massachusetts Institute of Technology

Youngjun Joh

Jason Z Fischman

Amos G Winter, V

Athena Yeh Huang

Venkata N M Arelekatti

A high performance, low-cost passive prosthetic knee includes one or more modules to enable able-bodied gait by transfemoral amputees to improve metabolic efficiency and reduce stigma from conspicuous abnormal gaits. A stance stability module includes a latch with a virtual lock axis that automatically locks and unlocks. An early stance flexion module enables able-bodied gait during stance. Hydraulic fluid dampers ensure reliable swing phase control. A swing extension energy storage module stores and returns energy as the knee locks and unlocks, respectively. These modules may be used together, in any combination, or individually.

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Cambridge, MA, United States of America

Youngjun Joh