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Preliminary Evaluation of a Powered Lower Limb Orthosis to Aid Walking in Paraplegic Individuals

Open access
Farris, Ryan J., Quintero, Hugo A., Goldfarb, Michael·2011·IEEE Transactions on Neural Systems and Rehabilitation Engineering

Abstract

This paper describes a powered lower-limb orthosis that is intended to provide gait assistance to spinal cord injured (SCI) individuals by providing assistive torques at both hip and knee joints. The orthosis has a mass of 12 kg and is capable of providing maximum joint torques of 40 Nm with hip and knee joint ranges of motion from 105° flexion to 30° extension and 105° flexion to 10° hyperextension, respectively. A custom distributed embedded system controls the orthosis with power being provided by a lithium polymer battery which provides power for one hour of continuous walking. In order to demonstrate the ability of the orthosis to assist walking, the orthosis was experimentally implemented on a paraplegic subject with a T10 complete injury. Data collected during walking indicates a high degree of step-to-step repeatability of hip and knee trajectories (as enforced by the orthosis) and an average walking speed of 0.8 km/hr. The electrical power required at each hip and knee joint during gait was approximately 25 and 27 W, respectively, contributing to the 117 W overall electrical power required by the device during walking. A video of walking corresponding to the aforementioned data is included in the supplemental material.

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Metadata

Authors
Farris, R. J., Quintero, H. A., & Goldfarb, M.
Venue
IEEE Transactions on Neural Systems and Rehabilitation Engineering
Published
2011-12
Volume
19
Issue
6
Pages
652-659
ISSN
  • 1534-4320 (ISSN-L)
  • 1558-0210
OpenAlex
W2006355360
Cited by
342
References
26
FWCI
12.22
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Preliminary Evaluation of a Powered Lower Limb Orthosis to Aid Walking in Paraplegic Individuals. https://app.cochat.ai/papers/10.1109/tnsre.2011.2163083
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Farris, R. J., Quintero, H. A., & Goldfarb, M. (2011). Preliminary Evaluation of a Powered Lower Limb Orthosis to Aid Walking in Paraplegic Individuals. IEEE Transactions on Neural Systems and Rehabilitation Engineering. https://doi.org/10.1109/tnsre.2011.2163083

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