08.2021.392.405

A Mathematical Model of The Human Lower Limb During a Complete Gait Cycle and Its Various Phases

Author(s):

Niaam Kh. Al-Hayali†, Somer M. Nacy†, Jumaa S. Chiad‡, and O. Hussein‡†

Affiliation(s):

† Biomedical Engineering Department, Alkhwarizmi College of Engineering, University of Baghdad, Baghdad – Iraq
‡ Prosthetic and Orthotics Engineering Department, College of Engineering, Al-Nahrain University, Baghdad – Iraq1
‡† Automated Manufacturing Engineering Department, Alkhwarizmi College of Engineering, University of Baghdad, Baghdad – Iraq

Corresponding Author Email: neaam@kecbu.uobaghdad.edu.iq

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.

In this paper, human gait cycle dynamics analysis and a mathematical model of gait cycle is presented for determining the torque of the lower limb joints during complete gait cycle and its various phases. A healthy subject was participated in series of initial walking experiments. The experimental setup consists of a force plate and a video recording camera. The ground reaction force and joints’ angles were measured. The parameters obtained from gait analysis used as an input to the presented mathematical model. Results show that the maximum value of torque calculated for the hip and knee joints during the full gait cycle are 64.702N.m and 25.413N.m during the stance phase, while the lowest value of the hip and knee joint torque are -144.641N.m and -46.8311N.m during the stance phase of the gait. In conclude, gait cycle modelling may help in developing of methods proposed for diagnoses and prevention of neurological and age-related disorders.