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The physiological cost index of walking with a powered knee–ankle–foot orthosis in subjects with poliomyelitis: A pilot study

Thumbnail
Author
Arazpour, Mokhtar
Ahmadi Bani, Monireh
Samadian, Mohammad
Mousavi, Mohammad
Hutchins, Stephen W.
Bahramizadeh, Mahmood
Curran, Sarah
Mardani, Mohammad
Date
2015-07-20
Acceptance date
2015-05-06
Type
Article
Publisher
SAGE
ISSN
1746-1553
Metadata
Show full item record
Abstract
Background: A powered knee–ankle–foot orthosis was developed to provide restriction of knee flexion during stance phase and active flexion and extension of the knee during swing phase of gait. Objective: The purpose of this study was to determine its effect on the physiological cost index, walking speed and the distance walked in people with poliomyelitis compared to when walking with a knee–ankle–foot orthosis with drop lock knee joints. Study design: Quasi experimental study. Methods: Seven subjects with poliomyelitis volunteered for the study and undertook gait analysis with both types of knee–ankle–foot orthosis. Results: Walking with the powered knee–ankle–foot orthosis significantly reduced walking speed (p = 0.015) and the distance walked (p = 0.004), and also, it did not improve physiological cost index values (p = 0.009) compared to walking with the locked knee–ankle–foot orthosis. Conclusion: Using a powered knee–ankle–foot orthosis did not significantly improve any of the primary outcome measures during walking for poliomyelitis subjects. Clinical relevance: This powered knee–ankle–foot orthosis design did not improve the physiological cost index of walking for people with poliomyelitis when compared to walking with a knee–ankle–foot orthosis with drop lock knee joints. This may have been due to the short training period used or the bulky design and additional weight of the powered orthosis. Further research is therefore warranted.
Journal/conference proceeding
Prosthetics and Orthotics International;
Citation
Arazpour, M., Ahmadi Bani, M., Samadian, M., Mousavi, M.E., Hutchins, S.W., Bahramizadeh, M., Curran, S. and Mardani, M.A. (2016) 'The physiological cost index of walking with a powered knee–ankle–foot orthosis in subjects with poliomyelitis: A pilot study', Prosthetics and Orthotics International, 40(4), pp.454-459. DOI: 10.1177/0309364615592697.
URI
http://hdl.handle.net/10369/10668
DOI
https://doi.org/10.1177/0309364615592697
Description
Article published in Prosthetics and Orthotics International on 20 July 2015 (online), available at: https://doi.org/10.1177/0309364615592697.
Rights
http://www.rioxx.net/licenses/all-rights-reserved
Sponsorship
Cardiff Metropolitan University (Grant ID: Cardiff Metropolian (Internal))
Collections
  • Health and Risk Management [392]

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