Response to common peroneal nerve stimulation following stroke
Response to common peroneal nerve stimulation following stroke
In this thesis I have examined the effect of functional electrical stimulation (FES) on the walking of people who have suffered a stroke. A simple, single channel stimulator, triggered by a foot-switch, based on Liberson's design of 1960, was used throughout the study. The effect of stimulation on the spasticity of the quadriceps and on the speed and the effort of walking was investigated through a randomised controlled trial with a selected sample of well motivated subjects with established hemiplegia and the walking problem described. Statistically significant improvement in walking parameters and in spasticity was identified only in the group using stimulation, but, among these subjects a wide variation in response was observed. In some cases stimulation resulted in a functional improvement in walking whereas in others little or no benefit was experienced. The second stage of the study sought to explain this observation by answering the following questions.
1. Is it possible to predict response to use of the stimulator?
2. Can different types of abnormal motor control be identified in apparently similar hemiplegic patients and, if so, is response associated with one or more type?
3. Does the patient's perceived benefit of stimulation realte to objective measures and do either influence continued use of stimulation?
A small, separate sample of similar patients were studied in depth prior to, and following, a three month period during which they used the same stimulator. Patterns of muscle activation and movement were measured and related to the functional and perceived benefits of using the stimulator.
Patterns of muscle activation identified in two ways, Firstly, muscle activation, mechanical resistance to movement, ability to activate muscles appropriately and control of voluntary movement were tested in an ankle rig in which the ankle could be moved passively and in which patients were asked to follow a tracking signal. Secondly, patients were observed walking on a treadmill. Patterns of muscle activation and ankle movement were again measured, and, using pressure sensitive foot-switches, related to stages of the gait cycle.
University of Southampton
1998
Burridge, Jane Helena
(1998)
Response to common peroneal nerve stimulation following stroke.
University of Southampton, Doctoral Thesis.
Record type:
Thesis
(Doctoral)
Abstract
In this thesis I have examined the effect of functional electrical stimulation (FES) on the walking of people who have suffered a stroke. A simple, single channel stimulator, triggered by a foot-switch, based on Liberson's design of 1960, was used throughout the study. The effect of stimulation on the spasticity of the quadriceps and on the speed and the effort of walking was investigated through a randomised controlled trial with a selected sample of well motivated subjects with established hemiplegia and the walking problem described. Statistically significant improvement in walking parameters and in spasticity was identified only in the group using stimulation, but, among these subjects a wide variation in response was observed. In some cases stimulation resulted in a functional improvement in walking whereas in others little or no benefit was experienced. The second stage of the study sought to explain this observation by answering the following questions.
1. Is it possible to predict response to use of the stimulator?
2. Can different types of abnormal motor control be identified in apparently similar hemiplegic patients and, if so, is response associated with one or more type?
3. Does the patient's perceived benefit of stimulation realte to objective measures and do either influence continued use of stimulation?
A small, separate sample of similar patients were studied in depth prior to, and following, a three month period during which they used the same stimulator. Patterns of muscle activation and movement were measured and related to the functional and perceived benefits of using the stimulator.
Patterns of muscle activation identified in two ways, Firstly, muscle activation, mechanical resistance to movement, ability to activate muscles appropriately and control of voluntary movement were tested in an ankle rig in which the ankle could be moved passively and in which patients were asked to follow a tracking signal. Secondly, patients were observed walking on a treadmill. Patterns of muscle activation and ankle movement were again measured, and, using pressure sensitive foot-switches, related to stages of the gait cycle.
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Published date: 1998
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Local EPrints ID: 463439
URI: http://eprints.soton.ac.uk/id/eprint/463439
PURE UUID: 215fa832-1267-44e7-83d6-9c554eb1f1d9
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Date deposited: 04 Jul 2022 20:51
Last modified: 04 Jul 2022 20:51
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Author:
Jane Helena Burridge
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