Volume 13, Number 4 (December 2015)                   IRJ 2015, 13(4): 63-67 | Back to browse issues page

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Safaeepour Z, Esteki A, Shamloo A, Tabatabai F. Evaluation of a Viscoelastic Ankle-Foot Prosthesis at Slow and Normal Walking Speeds on an Able-Bodied Subject . IRJ. 2015; 13 (4) :63-67
URL: http://irj.uswr.ac.ir/article-1-495-en.html

1- University of Social Welfare and Rehabilitation Sciences, Tehran, Iran.
2- Shahid Beheshti University of Medical Sciences, Tehran, Iran.
3- Science and Research Branch, Islamic Azad University, Tehran, Iran.
Abstract:   (823 Views)

Objectives: This paper describes further improvement and preliminarily evaluation of a novel viscoelastic ankle-foot prosthesis prototype. The objective was to control the ankle hysteresis at slow and normal walking speeds.

Methods: Inspired by the ankle biomechanics, in which the hysteresis differs based on the gait speeds, a manually damping control mechanism imbedded in the prosthesis for adjusting the ankle damping at slow and normal walking speeds. The prototype was then preliminarily tested on an able-bodied subject wearing an adaptor which simulates the amputee walking. The ankle joint kinetics and kinematics were measured in a gait analysis lab at different walking speeds.

Results: The results suggest that the viscoelastic ankle foot prosthesis prototype could provide a smooth normal-like walking for most of the measured gait characteristics in slow and normal speeds.

Discussion: Therefore, it is suggested to apply a controllable damping mechanism based on the gait speeds in the design of new prosthetic feet.

Full-Text [PDF 744 kb]   (387 Downloads)    
Type of Study: Case Reports |
Received: 2015/09/6 | Accepted: 2015/11/17 | Published: 2015/12/1

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