Published in

Advances in Bioengineering, 1998

DOI: 10.1115/imece1998-0003

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Mechanical responses of the fingertip during grasp-and-lift tasks

Proceedings article published in 1998 by Jay S. Kimmelman, Jack Tigh Dennerlein ORCID, Robert D. Howe
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

Abstract The human fingertip and its viscoelastic fingertip pad mediate much of our mechanical interaction with the environment. In manipulation tasks like grasping and lifting, soft-tissue deformation and passive joint rotation of the fingertip may be an important component for fine motor control and dexterity. Johansson and Westling [1] have extensively studied fingertip forces and neural responses during grasp-and-lift tasks, but their work is mainly limited to the description of how force develops throughout the lift. Pawluk [2] and Serina et al. [4] have examined fingertip pad deformations under compressive loading only. Our goal is to develop a more complete model of fingertip response during grasp-and-lift, including changing pressure distributions, soft-tissue deformation, orientation of the fingertip, and their effects on manipulation. We hypothesize that during a typical grasp and lift task, the centroid of pressure of the fingertip moves upward due to fingertip pad deformation as well as passive rotation of the metacarpal and interphalangeal joints.