Many studies have been done on the biological human ankle and prosthesis replaced with this limb. Although some of these works targeted to design a prosthesis which mimics the behavior of biological ankle, additional system is required to support the elastic components; any of them have obviously introduced an active system in designing ankle prosthesis until now. In this study the power of the non-disabled human ankle joint was examined during the stance phase of walking in sagittal plane. The study aimed to better understand the ankle’s dynamic behavior for designing foot prosthesis with active mechanism. Kinematic and Kinetic data of the lower limb were collected from 18 healthy, young subjects (i.e. 6 females and 13 males) walking over a speed range of slow, normal and fast (i.e. 0.86 to 1.80 m/s). The ankle moment versus angle curves were plotted and total, mean and maximum values of powers were calculated for each trial. The results indicated that the total, mean and maximum values of the power could increase as the walking speed increased. The main findings of this study were the total, mean and maximum values of the power as a function of the linear velocity of walking. These results showed that the speed of 1.06 m/s was a critical velocity, below which the system was negative, showing energy consumer system, and above it the system was positive, suggesting generated energy. With the intent to design a prosthesis mimicking a biologic foot, an augmented system which is able to adjust the power to the speed is necessary.
| Published in |
Applied and Computational Mathematics (Volume 4, Issue 2-1)
This article belongs to the Special Issue Quality, Reliability, Safety, and Risk Modeling and Optimization |
| DOI | 10.11648/j.acm.s.2015040201.12 |
| Page(s) | 7-11 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
| Copyright |
Copyright © The Author(s), 2015. Published by Science Publishing Group |
Natural Ankle, Active Prosthesis, Below-Knee Amputee, Moment-Angle Curves, Safety
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| [8] | Hitt, J., Sugar, T., Holgate, M., Bellman, R. & Hollander, K., “Robotic transtibial prosthesis with biomechanical energy regeneration,” Industrial Robot: An International Journal, vol. 36, no. 5, pp. 441–447, 2009. |
| [9] | Houdjik, H., Doets, H., Middelkoop, M., Veeger, H.E.J. (2008). Joint stiffness of the ankle during walking after successful mobile-bearing total ankle replacement. Gait & Posture, 27, 115-119. |
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APA Style
Sara Soltani Ch., Ali Esteki. (2015). Power Assessment of the Human Ankle during the Stance Phase of Walking for Designing a Safe Active Prosthesis in Below-Knee Amputees. Applied and Computational Mathematics, 4(2-1), 7-11. https://doi.org/10.11648/j.acm.s.2015040201.12
ACS Style
Sara Soltani Ch.; Ali Esteki. Power Assessment of the Human Ankle during the Stance Phase of Walking for Designing a Safe Active Prosthesis in Below-Knee Amputees. Appl. Comput. Math. 2015, 4(2-1), 7-11. doi: 10.11648/j.acm.s.2015040201.12
AMA Style
Sara Soltani Ch., Ali Esteki. Power Assessment of the Human Ankle during the Stance Phase of Walking for Designing a Safe Active Prosthesis in Below-Knee Amputees. Appl Comput Math. 2015;4(2-1):7-11. doi: 10.11648/j.acm.s.2015040201.12
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Download@article{10.11648/j.acm.s.2015040201.12,
author = {Sara Soltani Ch. and Ali Esteki},
title = {Power Assessment of the Human Ankle during the Stance Phase of Walking for Designing a Safe Active Prosthesis in Below-Knee Amputees},
journal = {Applied and Computational Mathematics},
volume = {4},
number = {2-1},
pages = {7-11},
doi = {10.11648/j.acm.s.2015040201.12},
url = {https://doi.org/10.11648/j.acm.s.2015040201.12},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.acm.s.2015040201.12},
abstract = {Many studies have been done on the biological human ankle and prosthesis replaced with this limb. Although some of these works targeted to design a prosthesis which mimics the behavior of biological ankle, additional system is required to support the elastic components; any of them have obviously introduced an active system in designing ankle prosthesis until now. In this study the power of the non-disabled human ankle joint was examined during the stance phase of walking in sagittal plane. The study aimed to better understand the ankle’s dynamic behavior for designing foot prosthesis with active mechanism. Kinematic and Kinetic data of the lower limb were collected from 18 healthy, young subjects (i.e. 6 females and 13 males) walking over a speed range of slow, normal and fast (i.e. 0.86 to 1.80 m/s). The ankle moment versus angle curves were plotted and total, mean and maximum values of powers were calculated for each trial. The results indicated that the total, mean and maximum values of the power could increase as the walking speed increased. The main findings of this study were the total, mean and maximum values of the power as a function of the linear velocity of walking. These results showed that the speed of 1.06 m/s was a critical velocity, below which the system was negative, showing energy consumer system, and above it the system was positive, suggesting generated energy. With the intent to design a prosthesis mimicking a biologic foot, an augmented system which is able to adjust the power to the speed is necessary.},
year = {2015}
}
TY - JOUR T1 - Power Assessment of the Human Ankle during the Stance Phase of Walking for Designing a Safe Active Prosthesis in Below-Knee Amputees AU - Sara Soltani Ch. AU - Ali Esteki Y1 - 2015/03/02 PY - 2015 N1 - https://doi.org/10.11648/j.acm.s.2015040201.12 DO - 10.11648/j.acm.s.2015040201.12 T2 - Applied and Computational Mathematics JF - Applied and Computational Mathematics JO - Applied and Computational Mathematics SP - 7 EP - 11 PB - Science Publishing Group SN - 2328-5613 UR - https://doi.org/10.11648/j.acm.s.2015040201.12 AB - Many studies have been done on the biological human ankle and prosthesis replaced with this limb. Although some of these works targeted to design a prosthesis which mimics the behavior of biological ankle, additional system is required to support the elastic components; any of them have obviously introduced an active system in designing ankle prosthesis until now. In this study the power of the non-disabled human ankle joint was examined during the stance phase of walking in sagittal plane. The study aimed to better understand the ankle’s dynamic behavior for designing foot prosthesis with active mechanism. Kinematic and Kinetic data of the lower limb were collected from 18 healthy, young subjects (i.e. 6 females and 13 males) walking over a speed range of slow, normal and fast (i.e. 0.86 to 1.80 m/s). The ankle moment versus angle curves were plotted and total, mean and maximum values of powers were calculated for each trial. The results indicated that the total, mean and maximum values of the power could increase as the walking speed increased. The main findings of this study were the total, mean and maximum values of the power as a function of the linear velocity of walking. These results showed that the speed of 1.06 m/s was a critical velocity, below which the system was negative, showing energy consumer system, and above it the system was positive, suggesting generated energy. With the intent to design a prosthesis mimicking a biologic foot, an augmented system which is able to adjust the power to the speed is necessary. VL - 4 IS - 2-1 ER -
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