Effects of Different Contact Surface Geometries on Finger Kinematics

Abstract

In designing an optimal tool, it is necessary to consider not only the kinematic characteristics of the fingers but also the effect of the posture of the fingers when using the tool. In this study, two types of exercise, tapping and pressure maintenance, were performed on a flat surface with all sensors at the same height and on a curved surface with different heights for each finger, and the exerted force of the four fingers (except the thumb) was measured. The results showed that the tapping exercise had no effect on the temporal index in the plane and curved surface conditions, but it did have an effect on the force index.