Design and Qualitative Testing of a Prosthetic Foot With Rotational Ankle and Metatarsal Joints to Mimic Physiological Roll-Over Shape
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 th...
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| Format: | Article |
| Language: | en_US |
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American Society of Mechanical Engineers
2017
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| Online Access: | http://hdl.handle.net/1721.1/109254 https://orcid.org/0000-0002-2940-2383 https://orcid.org/0000-0002-4151-0889 |
| _version_ | 1811090737908940800 |
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| author | Olesnavage, Kathryn Winter, Amos G. |
| author2 | MIT-SUTD Collaboration Office |
| author_facet | MIT-SUTD Collaboration Office Olesnavage, Kathryn Winter, Amos G. |
| author_sort | Olesnavage, Kathryn |
| collection | MIT |
| description | 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. |
| first_indexed | 2024-09-23T14:51:10Z |
| format | Article |
| id | mit-1721.1/109254 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T14:51:10Z |
| publishDate | 2017 |
| publisher | American Society of Mechanical Engineers |
| record_format | dspace |
| spelling | mit-1721.1/1092542022-09-29T11:00:25Z Design and Qualitative Testing of a Prosthetic Foot With Rotational Ankle and Metatarsal Joints to Mimic Physiological Roll-Over Shape Olesnavage, Kathryn Winter, Amos G. MIT-SUTD Collaboration Office Massachusetts Institute of Technology. Global Engineering and Research Laboratory Massachusetts Institute of Technology. Department of Mechanical Engineering Olesnavage, Kathryn Winter, Amos G. 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. Massachusetts Institute of Technology. Tata Center for Technology and Design Massachusetts Institute of Technology. Department of Mechanical Engineering 2017-05-22T16:15:28Z 2017-05-22T16:15:28Z 2015-08 Article http://purl.org/eprint/type/ConferencePaper 978-0-7918-5712-0 http://hdl.handle.net/1721.1/109254 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). https://orcid.org/0000-0002-2940-2383 https://orcid.org/0000-0002-4151-0889 en_US http://dx.doi.org/10.1115/DETC2015-46518 Volume 5A: 39th Mechanisms and Robotics Conference 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. application/pdf American Society of Mechanical Engineers American Society of Mechanical Engineers (ASME) |
| spellingShingle | Olesnavage, Kathryn Winter, Amos G. Design and Qualitative Testing of a Prosthetic Foot With Rotational Ankle and Metatarsal Joints to Mimic Physiological Roll-Over Shape |
| title | Design and Qualitative Testing of a Prosthetic Foot With Rotational Ankle and Metatarsal Joints to Mimic Physiological Roll-Over Shape |
| title_full | Design and Qualitative Testing of a Prosthetic Foot With Rotational Ankle and Metatarsal Joints to Mimic Physiological Roll-Over Shape |
| title_fullStr | Design and Qualitative Testing of a Prosthetic Foot With Rotational Ankle and Metatarsal Joints to Mimic Physiological Roll-Over Shape |
| title_full_unstemmed | Design and Qualitative Testing of a Prosthetic Foot With Rotational Ankle and Metatarsal Joints to Mimic Physiological Roll-Over Shape |
| title_short | Design and Qualitative Testing of a Prosthetic Foot With Rotational Ankle and Metatarsal Joints to Mimic Physiological Roll-Over Shape |
| title_sort | design and qualitative testing of a prosthetic foot with rotational ankle and metatarsal joints to mimic physiological roll over shape |
| url | http://hdl.handle.net/1721.1/109254 https://orcid.org/0000-0002-2940-2383 https://orcid.org/0000-0002-4151-0889 |
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