Table of Contents
Journal of Medical Engineering
Volume 2017 (2017), Article ID 3432074, 13 pages
https://doi.org/10.1155/2017/3432074
Research Article

Experimental Gait Analysis to Study Stress Distribution of the Human Foot

1Department of Mechanical Engineering, College of Engineering and Computer Science, California State University Northridge, Northridge, CA 91330, USA
2Department of Electrical and Computer Engineering, College of Engineering and Computer Science, California State University Northridge, Northridge, CA 91330, USA

Correspondence should be addressed to Vidya K. Nandikolla; ude.nusc@allokidnan.aydiv

Received 24 May 2017; Revised 15 August 2017; Accepted 4 October 2017; Published 2 November 2017

Academic Editor: Laurence Cheze

Copyright © 2017 Vidya K. Nandikolla et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Researchers and clinicians are increasingly using plantar pressure and force measurement system to evaluate foot functions. This research evaluates the quality and reliability of a Tekscan HR mat to study the plantar pressures and forces acting during walking, running, jumping, and standing of healthy subjects. The following regions of the foot were investigated: heel, mid foot, metatarsophalangeal joint, hallux, and the toes. The arches of both feet of the three healthy subjects in the gait analysis were presented which addresses the balancing issues of the body during locomotion. The results indicated that the peaks at the big toe (79.4 ± 8.5 N/cm2, p = 0.0001) were the maximum compared to forefoot (40.3 ± 3.3 N/cm2, p = 0.001), to midfoot (7.5 ± 1.3 N/cm2, p = 0.001), and to heel (27.8 ± 3.9 N/cm2, p = 0.0002) for jump activity. The running activity demonstrated similar results as jump where the maximum peak pressures were absorbed at the big toe region. The heel region during running (86.3 ± 12.6 N/cm2, p = 0.001) showed three times the pressure peak compared to the jump land (27.8 ± 3.9 N/cm2, p = 0.0002) activity. The measurement system proved to be highly capable of detecting heel strike and toe-off moments.