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Energy storage and return prostheses: does patient perception correlate with biomechanical analysis?
Brian J Hafner1, Joan E Sanders, Joseph Czerniecki
1Department of Bioengineering, University of Washington, Harris Hydraulics 309, Box 357962, Seattle 98195, USA.
Clinical Biomechanics (Bristol, Avon)
|June 27, 2002
Summary
Energy storage and return prosthetic feet show biomechanical trends aligning with user experience, despite limited statistical significance in studies. This suggests subtle gait improvements perceived by amputees warrant further research for better prosthetic design and prescription.
Area of Science:
- Biomechanics
- Prosthetics and Orthotics
- Rehabilitation Engineering
Background:
- Prescription of energy storage and return (ESR) prosthetic feet often relies on prosthetist and amputee experience rather than comparative biomechanical analysis.
- Conflicting or non-significant results in scientific literature hinder the development and prescription of advanced prosthetic feet.
- The link between clinical experience and scientific evidence in prosthetic component evaluation remains largely unexplored.
Purpose of the Study:
- To review comparative biomechanical analysis literature of ESR and conventional prosthetic feet.
- To illustrate consistencies between perceptive assessments and objective biomechanical data for prosthetic feet.
- To identify areas for improving prosthetic evaluation protocols and clinical recommendations.
Main Methods:
- Literature review of comparative analysis studies evaluating ESR and conventional prosthetic feet.
- Analysis of temporal, kinetic, and kinematic gait parameters.
- Correlation of objective biomechanical data with amputee perceptions of prosthetic foot performance.
Main Results:
- Consistent trends in gait parameters correlate well with amputee perceptions, even when not statistically significant.
- Objective data supports subtle gait changes perceived by amputees as affecting preference and performance.
- Experimental methodologies may limit statistical significance, but biomechanical trends align with subjective feedback.
Conclusions:
- Acknowledging perceptive significance can guide the development of structured protocols for ESR prosthesis evaluation.
- Expanding test environments to include activities like stair negotiation and uneven terrain is recommended.
- Targeting specific populations and research areas (e.g., gait adaptation, heel performance) can enhance prosthetic component selection and utilization.