Observation of grasping style adaptation due to artificially limited joint range of motion of the thumb

This paper proposes a measurement of grasping strategy by healthy volunteers with artificially disabled hand as a substitute for measurement in patients with disabilities in hand function for product design modeling. As a first step, we focused on limitation of the thumb and observed grasping strategy change when fixing the thumb joint range of motion using a taping technique. Different grasping styles and some typical contact regions were observed for the artificially disabled hand.