Preliminary investigation of residual limb plantarflexion and dorsiflexion muscle activity during treadmill walking for trans-tibial amputees

Prosthetics and Orthotics International
Barbara Silver-ThornBenjamin Kuhse

Abstract

Novel powered prosthetic ankles currently incorporate finite state control, using kinematic and kinetic sensors to differentiate stance and swing phases/sub-phases and control joint impedance and position or torque. For more intuitive control, myoelectric control of the ankle using the remnant residual limb dorsiflexors and plantarflexors, perhaps in concert with kinetic and kinematic sensors, may be possible. The specific research objective was to assess the feasibility of using myoelectric control of future active or powered prosthetic ankle joints for trans-tibial amputees. The project involved human subject trials to determine whether current techniques of myoelectric control of upper extremity prostheses might be readily adapted for lower extremity prosthetic control. Gait analysis was conducted for three unilateral trans-tibial amputee subjects during ambulation on an instrumented split belt treadmill. Data included ankle plantarflexor and dorsiflexor activity for the residual limb, as well as lower limb kinematics and ground reaction forces and moments of both the sound and prosthetic limbs. These data indicate that: 1) trans-tibial amputees retain some independent ankle plantarflexor and dorsiflexor muscle activity of t...Continue Reading

References

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Citations

Dec 6, 2019·Frontiers in Bioengineering and Biotechnology·Unéné Gregory, Lei Ren
Sep 7, 2021·Frontiers in Neuroscience·Erika V Zabre-GonzalezScott A Beardsley

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Methods Mentioned

BETA
feature extraction
amputation

Software Mentioned

Vicon
Vicon Nexus
MyoBoy
PlugInGait

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