SBIR Phase II: Quasi-Active Prosthetic Ankle System: Dynamic Angle and Stiffness Optimizations for Multiple Gait Activities

Project: Research project

Project Details


In this evaluation, dynamic stability and Socket Comfort Score and Rating of Perceived Exertion will be used to assess performance differences between QPAS and the participants passive prosthesis during various walking conditions. QPAS is new technology and the combined features have never been tested with amputee participants.
Primary goals of this evaluation are: 1) Gain experience tuning QPAS for each gait activity. This includes adjusting the timing and amplitude characteristics of the reference pattern; 2) Collect pilot kinematic and kinetic data on the hip, knee and ankle joints of both the sound and affected limb to support a power analysis for a future clinical trial; 3) Collect information, in an objective and scientifically responsible manner about the overall performance and comfort level of the amputee participants while using the QPAS system in comparison to their traditional passive prosthesis. Participants will be subjected to level ground and +/- 5o and +/- 10o slope walking tests to determine dynamic stability of gait and posture as well as Socket Comfort and Rating of Perceived Exertion Scores.
Thurmon Lockhart, Ph.D. Biomedical Engineer (one month summer for two years) will serve as the principal investigator responsible for the overall administration and direction of the project including design of the research protocols, evaluation and interpretation of results and participate in research dissemination. He will be assisted by a post-doc researcher.
Effective start/end date5/1/174/30/20


  • National Science Foundation (NSF): $74,993.00


Explore the research topics touched on by this project. These labels are generated based on the underlying awards/grants. Together they form a unique fingerprint.