Journal article
The effect of custom carbon ankle-foot orthosis alignment on roll-over shape and center of pressure velocity
Prosthetics and orthotics international, Vol.45(2), pp.147-152
04/01/2021
DOI: 10.1177/0309364620971407
PMID: 33225810
Abstract
Background:
Maintaining an optimal rolling of the foot over the ground is thought to increase the stability and efficiency of pathologic gait. Ankle-foot orthoses are often prescribed to improve gait mechanics in individuals with lower extremity injuries; however, their design may compromise how the foot rolls over the ground.
Objectives:
The aim of this study was to investigate the effects of the sagittal plane ankle-foot orthosis alignment on roll-over shape and center of pressure velocity in individuals with lower limb reconstructions.
Study design:
Randomized cross-over study with a control group comparison.
Methods:
In total, 12 individuals with lower limb reconstruction who used a custom carbon ankle-foot orthosis and 12 uninjured controls underwent gait analysis. Ankle-foot orthosis users were tested in their clinically-provided ankle-foot orthosis alignment, with an alignment that was 3 degrees more plantarflexed, and with an alignment that was 3 degrees more dorsiflexed. Components of roll-over shape and center of pressure velocity were calculated from heel strike on the ankle-foot orthosis limb to contralateral heel strike.
Results:
Roll-over shape radius was not affected by 3 degrees changes to alignment and was not significantly different from controls. Aligning the ankle-foot orthosis in more dorsiflexion than clinically provided resulted in a smaller peak center of pressure velocity that occurred later in stance.
Conclusion:
Individuals using custom carbon ankle-foot orthoses can accommodate 3 degrees alterations in the dorsiflexion or plantarflexion alignment.
Details
- Title: Subtitle
- The effect of custom carbon ankle-foot orthosis alignment on roll-over shape and center of pressure velocity
- Creators
- Elizabeth Russell Esposito - Department of DefenceMitchell D. Ruble - Wilford Hall Medical CenterAndrea J. Ikeda - Shirley Ryan AbilityLabJason M. Wilken - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Prosthetics and orthotics international, Vol.45(2), pp.147-152
- Publisher
- Sage
- DOI
- 10.1177/0309364620971407
- PMID
- 33225810
- ISSN
- 0309-3646
- eISSN
- 1746-1553
- Number of pages
- 6
- Grant note
- Uniformed Services University of Health Sciences, Bethesda, MD Center for Rehabilitation Sciences Research, Department of Physical Medicine and Rehabilitation
- Language
- English
- Date published
- 04/01/2021
- Academic Unit
- Physical Therapy and Rehabilitation Science
- Record Identifier
- 9984294956502771
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