Efficiency of voluntary opening hand and hook prosthetic devices, 24 years of development?

Efficiency of voluntary opening hand and hook prosthetic devices, 24 years of development?

Smit, G.
Bongers, R.M.
Van der Sluis, C.K.
Plettenburg, D.H.

Mechanical, Maritime and Materials Engineering

BioMechanical Engineering

2012-06-01

Quantitative data on the mechanical performance of upper-limb prostheses are very important in prostheses development and selection. The primary goal of this study was to objectively evaluate the mechanical performance of adult-size voluntary opening (VO) prosthetic terminal devices and select the best tested device. A second goal was to see whether VO devices have improved in the last two decades. Nine devices (four hooks and five hands) were quantitatively tested (Hosmer model 5XA hook, Hosmer Sierra 2 Load VO hook, RSL Steeper Carbon Gripper, Otto Bock model 10A60 hook, Becker Imperial hand, Hosmer Sierra VO hand, Hosmer Soft VO hand, RSL Steeper VO hand, Otto Bock VO hand). We measured the pinch forces, activation forces, cable displacements, mass, and opening span and calculated the work and hysteresis. We compared the results with data from 1987. Hooks required lower activation forces and delivered higher pinch forces than hands. The activation forces of several devices were very high. The pinch forces of all tested hands were too low. The Hosmer model 5XA hook with three bands was the best tested hook. The Hosmer Sierra VO hand was the best tested hand. We found no improvements in VO devices compared with the data from 1987.

body powered
efficiency
hysteresis
prosthetic design
prosthetic evaluation
prosthetic hand
prosthetics
qualitative testing
upper limb
voluntary opening

http://resolver.tudelft.nl/uuid:3381b881-c668-4dc4-8107-627b2e222c10

https://doi.org/10.1682/JRRD.2011.07.0125

U.S. Department of Veterans Affairs

0748-7711

JRRD: Journal of Rehabilitation Research & Development, 49 (4), 2012

Institutional Repository

journal article

(c) 2012 The Author(s)
Open Access