PMID: 2095530Dec 1, 1990Paper

Analysis of the swing phase dynamics and muscular effort of the above-knee amputee for varying prosthetic shank loads

Prosthetics and Orthotics International
S A Hale

Abstract

The purpose of this study was to determine the effect of varying prosthetic shank mass, while maintaining the mass centre location and moment of inertia, on the swing phase kinematics, kinetics and hip muscular effort of free speed above-knee (AK) amputee gait. Six AK amputees, wearing similar prosthetic designs, had three load conditions applied to their prosthetic shank: 1) Load 0-unloaded (X = 39.1% sound shank mass), 2) Load 1-75%, and 3) Load 2-100% sound leg mass. Despite increases in shank mass from 1.33 to 3.37 kg the AK amputee was able to maintain a consistent swing time and walking speed. As load increased, there were significant changes in the maximum knee and hip displacements, as well as phasic shifting. The prosthetic knee Resultant Joint Moment (RJM) was negligible while the shank was accelerating (periods 1 and 2), but was a major contributor during shank deceleration (periods 3 and 4). During periods 1 and 2 the principle contributors to the shank acceleration (forces resisting excessive knee flexion) were the gravitational moment (S-G) and the moment due to thigh angular acceleration (S-AT). During the periods of shank acceleration (sections 1 and 2), there was not a significant increase in the hip muscular e...Continue Reading

References

Jan 1, 1976·Journal of Biomechanics·M Y Zarrugh, C W Radcliffe
Jan 1, 1985·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·R HicksJ R Gage
Apr 1, 1983·Prosthetics and Orthotics International·G IshaiZ Susak
Dec 1, 1982·Prosthetics and Orthotics International·A CappozzoM Marchetti

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Citations

Mar 1, 1997·American Journal of Physical Medicine & Rehabilitation·A GitterM Meinders
Feb 28, 2002·Prosthetics and Orthotics International·B BurkettT Barker
May 21, 2016·Frontiers in Bioengineering and Biotechnology·Evandro Maicon FicanhaMohammad Rastgaar
Jun 5, 2002·Prosthetics and Orthotics International·J S RietmanJ H B Geertzen
Aug 25, 2012·Prosthetics and Orthotics International·Mihai BragaruJan H B Geertzen
Mar 12, 2008·Prosthetics and Orthotics International·Laurent FrossardRickard Brånemark
Jun 19, 2003·Prosthetics and Orthotics International·B BurkettT Barker
Feb 10, 2007·Human Movement Science·Jeremy D Smith, Philip E Martin

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