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Treatment of Ankle Osteoarthritis with Total Ankle Replacement Through a Lateral Transfibular Approach
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Advances in Powered Ankle-Foot Prostheses.
Erik Chumacero1, Abdullah Al Masud1, Doruk Isik1
1Department of Mechanical Engineering, Texas Tech University, Lubbock, Texas.
Critical Reviews in Biomedical Engineering
|July 30, 2018
Summary
This review covers powered ankle-foot prostheses (PAFPs), detailing actuation, control strategies, and common actuator types. Future PAFPs need to be lighter, more energy-efficient, and better at stair negotiation.
Area of Science:
- Biomedical Engineering
- Rehabilitation Technology
- Prosthetics
Background:
- Powered ankle-foot prostheses (PAFPs) aim to restore natural gait for amputees.
- Advancements in actuation and control are crucial for PAFP performance.
Purpose of the Study:
- To review recent developments in PAFPs.
- To highlight key areas including actuation, control strategies, and actuator types.
Main Methods:
- Review of literature on PAFPs.
- Analysis of common control strategies (finite-state machines, low-level torque control).
- Examination of actuator technologies (pneumatic, hydraulic, electromechanical).
Main Results:
- Finite-state machines with low-level torque control are prevalent.
- Brushless DC motors with energy storage enhance autonomy and reduce size.
- Experimental evaluations show promising results in walking velocity and gait symmetry.
Conclusions:
- Current PAFPs demonstrate acceptable performance in basic walking.
- Future research should prioritize weight reduction and energy efficiency.
- Enhancements in gait phase classification, intent prediction, and stair negotiation are essential.
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