Design and Qualitative Testing of a Prosthetic Foot With Rotational Ankle and Metatarsal Joints to Mimic Physiological Roll-Over Shape
Name
Design and qualitative.pdf
Size
4.09 MB
Format
Adobe PDF
Checksum (MD5)
08a2e5db3f70b41cebb78f8c80f59537
Author(s)
Olesnavage, Kathryn
Winter, Amos G.
Date Issued
August 2015
Journal
Volume 5A: 39th Mechanisms and Robotics Conference
Publisher
American Society of Mechanical Engineers
Citation
Olesnavage, Kathryn M., and Amos G. Winter. “Design and Qualitative Testing of a Prosthetic Foot With Rotational Ankle and Metatarsal Joints to Mimic Physiological Roll-Over Shape.” Volume 5A: 39th Mechanisms and Robotics Conference (August 2, 2015).
Version
Final published version
Abstract
This paper presents the analysis, design, and preliminary testing of a prototype prosthetic foot for use in India. A concept consisting of a rigid structure with rotational joints at the ankle and metatarsal with rotational stiffnesses provided by springs is discussed. Because literature suggests that prosthetic feet that exhibit roll-over shapes similar to that of physiological feet allow more symmetric gait, the joint stiffnesses were optimized to obtain the best fit between the roll-over shape of the prototype and of a physiological foot. Using a set of published gait data for a 56.7 kg subject, the optimal stiffness values for roll-over shape that also permit the motion required for natural gait were found to be 9.3 N·m/deg at the ankle and 2.0 N·m/deg at the metatarsal. The resulting roll-over shape has an R2 value of 0.81 when compared with the physiological roll-over shape. The prototype was built and tested in Jaipur, India. Preliminary qualitative feedback from testing was positive enough to warrant further development of this design concept.
MIT Department
MIT-SUTD Collaboration Office
Massachusetts Institute of Technology. Global Engineering and Research Laboratory
Massachusetts Institute of Technology. Department of Mechanical Engineering
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1115/DETC2015-46518
