B2 Behavior of the ankle joint in the transverse plane while turning at several walking speed

Abstract

The purpose of this study was to examine kinematics and kinetics of the ankle joint in transverse plane at several walking speed and several turning angle. Six healthy male subjects walked and turned 45,90 degree at several walking speed. Landmark positions and ground reaction force were recorded by 10 high-speed cameras and 3 force-platforms, simultaneously. Kinematics data (angle and angular velocity) and Kinetics data (torque and power) were calculated. The result showed that internally rotation angle and externally rotation moment of normal and slow walking speed were significantly lower than those of fast walking speed during turning 45 and 90 degree. And the result showed that Int / Ext rotation moment of turning 45 and 90 degree were significantly higher than those of straight walking. And passive torsional springs were chosen to model the ankle behavior in gait cycle. The result of this study showed that elements of walking speed and turning gait are very important when ankle behavior in transverse plane is examined and modeled.