Angular Kinematics of Knee and Ankle Joint Movement Study Using Video Gait Analysis

This paper proposes an economical gait analysis system by using web camera, radium markers, general computer and MATLAB tool. The study (or measurement) of kinematics of joint is done by using image processing algorithm. For detecting kinematic angles the radium markers are placed on the joints of the person then, few second walking video of that person is captured. With the help of markers stick figure is drawn and using stick figure joint movements are observed. This technique is applied on 5 normal adults (average 24 year age). The accuracy of the proposed system is checked by comparing these kinematic data with clinical gait analysis normative database. From this comparison it is observed that this method of gait analysis can be further applied on person having walking disability and it will be economical for clinical use. Keywords— gait, radium, web camera, angular kinematics, MATLAB.