Journal article
Passive-dynamic ankle-foot orthoses change post-stroke lower extremity constituent work profile
Journal of biomechanics, Vol.177, 112414
12/2024
DOI: 10.1016/j.jbiomech.2024.112414
PMID: 39514985
Abstract
Stiffness-customized passive-dynamic ankle–foot orthoses (PD-AFOs) have been shown to reduce the mechanical cost of transport (COT) of individuals post-stroke. However, the mechanisms underlying this reduced COT are unknown. Therefore, this study aimed to identify the factors driving COT reduction with PD-AFO use for individuals post-stroke. Results showed that changes in limb work were strongly correlated to changes in COT with the PD-AFO compared to No AFO in the paretic (tau = 0.637, p < 0.001) and non-paretic (tau = 0.621, p < 0.001) limbs. There was also a strong correlation between changes in limb work and changes in COT compared to SOC AFO in the paretic (tau = 0.569, p < 0.001) and non-paretic (tau = 0.503, p = 0.003) limbs. Conversely, changes in stride length and changes in COT were not correlated. Changes in COT between No AFO and PD-AFO were moderately correlated to the number of constituents that performed less mechanical work for both the paretic (tau = −0.462, p = 0.009) and non-paretic (tau = −0.402, p = 0.025) limbs. Compared to walking with SOC AFOs, there was a moderate correlation between COT and the number of constituents in the paretic limb (tau = −0.458, p = 0.011) but not the non-paretic limb (tau = −0.247, p = 0.173). These findings indicate that PD-AFOs reduce COT primarily through small changes in work across many lower limb constituents. Understanding how COT reduction occurs can help optimize PD-AFO design and possibly other rehabilitation interventions for individuals post-stroke.
Details
- Title: Subtitle
- Passive-dynamic ankle-foot orthoses change post-stroke lower extremity constituent work profile
- Creators
- Jacob T. Skigen - University of DelawareCorey A. Koller - University of DelawareDarcy S. Reisman - University of DelawareZahra N. McKee - University of DelawareShay R. Pinhey - University of DelawareJason M. Wilken - Department of Physical Therapy and Rehabilitation Science, University of Iowa, Iowa City, IA, USAElisa S. Arch - University of Delaware
- Resource Type
- Journal article
- Publication Details
- Journal of biomechanics, Vol.177, 112414
- DOI
- 10.1016/j.jbiomech.2024.112414
- PMID
- 39514985
- NLM abbreviation
- J Biomech
- ISSN
- 0021-9290
- eISSN
- 1873-2380
- Publisher
- Elsevier Ltd
- Grant note
- USAMRAA through the Orthotics & Prosthetics Out-comes Research Program: W81XWH-18-1-0502
We would like to acknowledge Tamara Wright and Henry Wright as the Research Physical Therapists who assisted with this study. This work was supported by USAMRAA through the Orthotics & Prosthetics Out-comes Research Program under Award No. W81XWH-18-1-0502. Opinion, interpretations, conclusions, and recommendations are those of the author and not necessarily endorsed by USAMRAA.
- Language
- English
- Date published
- 12/2024
- Academic Unit
- Physical Therapy and Rehabilitation Science
- Record Identifier
- 9984742655402771
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