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transtibial
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Personalized design of ankle-foot prosthesis based on computer modeling of amputee locomotion
, Article Assistive Technology ; September , 2018 ; 10400435 (ISSN) ; Mohammadi Moghaddam, M ; Farahmand, F ; Sharif University of Technology
Taylor and Francis Inc
2018
Abstract
This study proposes a computer modeling approach to find the optimal damping coefficients of the viscoelastic ankle-foot prostheses for each specific amputee. A two-dimensional locomotion model was developed for a transtibial amputee and personalized using his body measures and the reference gait pattern of an equivalent able-bodied subject. By employing the forward dynamic simulation, the amputee’s locomotion was synthesized for different prosthetic settings to find the optimal damping coefficients, based on a kinematics and a total work cost function. Results indicated a good agreement between the model predictions and the experimental observations. © 2018, © 2018 RESNA
Personalized design of ankle-foot prosthesis based on computer modeling of amputee locomotion
, Article Assistive Technology ; Volume 32, Issue 2 , 2020 , Pages 100-108 ; Mohammadi Moghaddam, M ; Farahmand, F ; Sharif University of Technology
Taylor and Francis Inc
2020
Abstract
This study proposes a computer modeling approach to find the optimal damping coefficients of the viscoelastic ankle-foot prostheses for each specific amputee. A two-dimensional locomotion model was developed for a transtibial amputee and personalized using his body measures and the reference gait pattern of an equivalent able-bodied subject. By employing the forward dynamic simulation, the amputee’s locomotion was synthesized for different prosthetic settings to find the optimal damping coefficients, based on a kinematics and a total work cost function. Results indicated a good agreement between the model predictions and the experimental observations. © 2018, © 2018 RESNA
Design and fabrication of a new expandable transtibial liner with manual volume control: A prototype
, Article Journal of Biomedical Physics and Engineering ; Volume 10, Issue 4 , 2020 , Pages 543-548 ; Aminian, G ; Farahmand, F ; Rahgozar, M ; Sharif University of Technology
Shiraz University of Medical Sciences
2020
Abstract
Diurnal volume changes is one of the main factors influencing socket fit in trans-tibial prosthesis and causing pressure problem issues. Embedded bladder liners have been recently a potential approach to deal with this problem. The aim of this technical note was to introduce a new transtibial silicone liner designed based on hybrid socket theory. To make expandability in the liner, an integrated wax structure was constructed over the selected areas of the positive model and then removed after lamination process. In addition, a mechanical system with manual control was designed to fit the liner with the residual limb volume by pumping the water in or out of the liner through connec-tive...