ARTICLE
Numerical study of the effects of prosthesis foot asymmetry on energy characters and roll-over characteristics
1
College of Mechanical Engineering, Tianjin University of Science and Technology, Tianjin, China
Submission date: 2023-02-16
Final revision date: 2023-06-09
Acceptance date: 2023-06-09
Online publication date: 2023-08-30
Publication date: 2023-10-30
Corresponding author
Junxia Zhang
College of Mechanical Engineering, Tianjin University of Science & Technology, 300000, Tianjin, China
College of Mechanical Engineering, Tianjin University of Science & Technology, 300000, Tianjin, China
Journal of Theoretical and Applied Mechanics 2023;61(4):687-700
KEYWORDS
biometric prosthetic footcarbon fiber epoxy compositesroll-over shapeenergystore and return character
TOPICS
ABSTRACT
There is limited research available on the effect of asymmetric structure on the performance
of the prosthesis. In this paper, 12 sets of prosthetic feet with asymmetric structures were
developed using a planar polar coordinate system. The effect of asymmetry on the prosthesis
performance was investigated. The prosthetic feet with asymmetric structures were modeled
in a gradient manner within a polar coordinate system. A finite element (FE) model of
the prosthetic walking process was formulated, and dynamic simulations were conducted
to simulate the loading of the prosthesis during the support phase. Evaluation indices such
as energy characteristics, contact pressure and roll-over shape were selected to investigate
the effects of the asymmetric structure. The results indicate that 1 and 3 asymmetry
significantly affects strain energy density. Moreover, incorporating heel asymmetry proves
to be more advantageous in reducing contact pressure of the prosthesis during the middle
stance moment. The optimal parameters for asymmetric prostheses are determined based
on these findings.
REFERENCES (20)
1.
Adamczyk P.G., Kuo A.D., 2013a, Mechanical and energetic consequences of rolling foot shape in human walking, Journal of Experimental Biology, 216, 14, 2722-2731.
2.
Adamczyk P.G., Roland M., Hahn M.E., 2013b, Novel method to evaluate angular stiffness of prosthetic feet from linear compression tests, Journal of Biomechanical Engineering, 135, 10, 104502-104505.
3.
Adamczyk P.G., Roland M., Hahn M.E., 2017, Sensitivity of biomechanical outcomes to independent variations of hindfoot and forefoot stiffness in foot prostheses, Human Movement Science, 54, 154-171.
4.
Allard P., Trudeau F., Prince F., Dansereau J., Labelle H., Duhaime M., 1995, Modelling and gait evaluation of asymmetrical-keel foot prosthesis, Medical and Biological Engineering and Computing, 33, 1, 2-7.
5.
Ármannsdóttir A.L., Lecomte C., Brynjólfsson S., Briem K., 2021, Task dependent changes in mechanical and biomechanical measures result from manipulating stiffness settings in a prosthetic foot, Clinical Biomechanics, 89, 105476.
6.
Boresi A.P., Schmidt R.J., Sidebottom O.M., 1993, Advanced Mechanics of Materials, New York: Wiley.
7.
De Asha A.R., Johnson L., Munjal R., Kulkarni J., Buckley J.G., 2013, Attenuation of centre-of-pressure trajectory fluctuations under the prosthetic foot when using an articulating hydraulic ankle attachment compared to fixed attachment, Clinical Biomechanics, 28, 2, 218-224.
8.
Fey N.P., Klute G.K., Neptune R.R., 2011, The influence of energy storage and return foot stiffness on walking mechanics and muscle activity in below-knee amputees, Clinical Biomechanics, 26, 10, 1025-1032.
9.
Fey N.P., Klute G.K., Neptune R.R., 2013, Altering prosthetic foot stiffness influences foot and muscle function during below-knee amputee walking: a modeling and simulation analysis, Journal of Biomechanics, 46, 4, 637-644.
10.
Fridman A., Ona I., Isakov E., 2003, The influence of prosthetic foot alignment on trans-tibial amputee gait, Prosthetics and Orthotics International, 27, 1, 17-22.
11.
Handzic I., 2014, Analysis and Application of Passive Gait Rehabilitation Methods, University of South Florida.
12.
Hansen A.H., Childress D.S., 2005, Effects of adding weight to the torso on roll-over characteristics of walking, Journal of Rehabilitation Research and Development, 42, 3.
13.
Hansen A.H., Childress D.S., Knox E.H., 2000, Prosthetic foot rollover shapes with implications for alignment of transtibial prostheses, Prosthetics and Orthotics International, 24, 3, 205-215.
14.
Hansen A.H., Childress D.S., Knox E.H., 2004a, Roll-over shapes of human locomotor systems: effects of walking speed, Clinical Biomechanics, 19, 4, 407-414.
15.
Hansen A.H., Childress D.S., Miff S.C., 2004b, Roll-over characteristics of human walking on inclined surfaces, Human Movement Science, 23, 6, 807-821.
16.
ISO/TS 16955: 2016, Prosthetics – quantification of physical parameters of ankle foot devices and foot units.
17.
Jang T.S., Lee J.J., Lee D.H., Yoon Y.S., 2001, Systematic methodology for the design of a flexible keel for energy-storing prosthetic feet, Medical and Biological Engineering and Computing, 39, 1, 56-64.
18.
Prince F., Winter D.A., Sjonnensen G., Powell C., Wheeldon R.K., 1998, Mechanical efficiency during gait of adults with transtibial amputation: a pilot study comparing the SACH, Seattle, and Golden-Ankle prosthetic feet, Journal of Rehabilitation Research and Development, 35, 2, 177-185.
19.
Prince F., Winter D.A., Sjonnesen G., Wheeldon R.K., 1994, A new technique for the calculation of the energy stored, dissipated, and recovered in different ankle-foot prostheses, IEEE Transactions on Rehabilitation Engineering, 2, 4, 247-255.
20.
Tryggvason H., Starker F., Lecomte C., Jonsdottir F., 2020, Use of dynamic FEA for design modification and energy analysis of a variable stiffness prosthetic foot, Applied Sciences, 10, 2, 650.
| eISSN: | 2543-6309 |
| ISSN: | 1429-2955 |
We process personal data collected when visiting the website. The function of obtaining information about users and their behavior is carried out by voluntarily entered information in forms and saving cookies in end devices. Data, including cookies, are used to provide services, improve the user experience and to analyze the traffic in accordance with the Privacy policy. Data are also collected and processed by Google Analytics tool (more).
You can change cookies settings in your browser. Restricted use of cookies in the browser configuration may affect some functionalities of the website.
You can change cookies settings in your browser. Restricted use of cookies in the browser configuration may affect some functionalities of the website.
