The prehensile movements of the human hand.

@article{Napier1956ThePM,
  title={The prehensile movements of the human hand.},
  author={John Russell Napier},
  journal={The Journal of bone and joint surgery. British volume},
  year={1956},
  volume={38-B 4},
  pages={
          902-13
        }
}
  • J. Napier
  • Published 1 November 1956
  • Medicine
  • The Journal of bone and joint surgery. British volume
1. The prehensile movements of the hand as a whole are analysed from both an anatomical anda functional viewpoint. 2. It is shown that movements of the hand consist of two basic patterns of movements which are termed precision grip and power grip. 3. In precision grip the object is pinched between the flexor aspects of the fingers and that of the opposing thumb. 4. In power grip the object is held as in a clamp between the flexed fingers and the palm, counter pressure being applied by the thumb… Expand
A CLASSIFICATION OF MANIPULATIVE HAND MOVEMENTS
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It is argued that a functional distinction should be made between palmar grips which immobilise an object in the hand, and digital patterns which permit manipulation, which are separate from any anatomically defined power and precision configurations. Expand
Does the type of prehension influence the kinematics of reaching
TLDR
The results showed that corrections to the distal program in response to the perturbation were preceded by changes in the deceleration phase of the proximal component, which supported previous findings of two visuo-motor channels for this prehensile movement but indicated that when unanticipated shifts of only thedistal program are required, both channels show modifications. Expand
The nature of human prehension: Three dextrous hands in one
  • T. Iberall
  • Engineering, Computer Science
  • Proceedings. 1987 IEEE International Conference on Robotics and Automation
  • 1987
TLDR
This paper shows two key issues seem to be balanced in prehensile tasks: that of affixing the object in the hand, and that of gathering information about the state of the object during the task, through combinations of three basic methods of applying oppositions around obiects. Expand
Final posture of the upper limb depends on the initial position of the hand during prehension movements
TLDR
The results showed that the posture of the arm varied systematically as a function of the movement starting point, and was altered at both the distal and proximal levels when the orientation of the object was changed. Expand
Orienting the finger opposition space during prehension movements.
TLDR
Evidence is interpreted that when natural prehension occurs, pronation can be included in the motor plan without affecting the movement kinematics, when constraints are imposed on the movement execution as a consequence of a perturbation. Expand
Restoration of prehension after severe mutilations of the hand.
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The various methods of reconstruction are described that are appropriate to each type of mutilation, so as to provide restoration of length, mobility and sensation. Expand
STUDIES OF THE HANDS OF LIVING PRIMATES
TLDR
It is suggested that the “double-locking” mechanism of the fingers compensates in some measure for the ineffectiveness of the thumb in prehension. Expand
Thumbs up: movements made by the thumb are smoother and larger than fingers in finger-thumb opposition tasks
TLDR
The traditional notion of the thumb being a special digit when compared to other fingers is true at least for the opposition movements considered in this study. Expand
A New Perspective in the Understanding of Hand Dysfunction Following Neurological Injury
TLDR
A measure to characterize the biomechanics of palmar arch modulation during grasping is proposed and questions to be investigated in future studies are highlighted to stimulate further understanding of the motor control of hand function and of the recovery of hand functioning after neurological injury. Expand
The mechanical design of the MARCUS prosthetic hand
The present article deals with the work carried out in the framework of the TIDE project No.150 MARCUS, for the development of a new three-fingered polyarticulated myoelectric prosthesis. TheExpand
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