Influence of pallidal stimulation and levodopa on gait and preparatory postural adjustments in Parkinson's disease
Identifieur interne : 000353 ( Istex/Curation ); précédent : 000352; suivant : 000354Influence of pallidal stimulation and levodopa on gait and preparatory postural adjustments in Parkinson's disease
Auteurs : Luc J. P. Defebvre [France] ; Pierre Krystkowiak [France] ; Jean-Louis Blatt [France] ; Alain Duhamel [France] ; Jean-Louis Bourriez [France] ; Myriame Périna [France] ; Serge Blond [France] ; Jean-Daniel Guieu [France] ; Alain Destée [France]Source :
- Movement Disorders [ 0885-3185 ] ; 2002-01.
English descriptors
Abstract
In order to assess the influence of the bilateral internal globus pallidus (GPi) stimulation on gait and postural instability in Parkinson's disease (PD), we compared gait kinematic parameters and preparatory postural adjustments before and 3 months after stimulation in off‐ and on‐drug conditions for seven patients. Gait kinematic parameters and displacements of centre of pressure (CP) and shoulder computed before a lateral raising task of the leg, were recorded using optoelectric Vicon system. Levodopa (L‐dopa) induced a clear benefit for gait velocity (related to an increase of stride length) and also an increase of swing phase duration. GPi stimulation had a limited effect, since the increase of gait velocity was induced by a concomitant increase of stride length and cadence corresponding to a compensatory mechanism. The benefit on swing phase duration was also moderate. Displacements of CP were improved mainly by L‐dopa. GPi stimulation and L‐dopa had the same beneficial effect on the speed at which the CP was transferred back towards the support side, the ankle velocity, the onset time for ankle displacement, and the decrease of shoulder amplitude towards the support side, which reflects a better postural adjustment phase. This study, based on an objective method, revealed that chronic bilateral GPi stimulation may improve gait and preparatory postural adjustments in severe PD patients with a more limited effect than L‐dopa. © 2001 Movement Disorder Society.
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DOI: 10.1002/mds.1262
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Disorders</title><title level="j" type="abbrev">Mov. Disord.</title><idno type="ISSN">0885-3185</idno><idno type="eISSN">1531-8257</idno><imprint><publisher>John Wiley & Sons, Inc.</publisher><pubPlace>New York</pubPlace><date type="published" when="2002-01">2002-01</date><biblScope unit="vol">17</biblScope><biblScope unit="issue">1</biblScope><biblScope unit="page" from="76">76</biblScope><biblScope unit="page" to="83">83</biblScope></imprint><idno type="ISSN">0885-3185</idno></series><idno type="istex">32AD527100BE5F9DBA677ED9752C9D1A2C8122AB</idno><idno type="DOI">10.1002/mds.1262</idno><idno type="ArticleID">MDS1262</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0885-3185</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>L‐dopa</term><term>Parkinson's disease</term><term>gait</term><term>pallidal stimulation</term><term>preparatory postural adjustments</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">In order to assess the influence of the bilateral internal globus pallidus (GPi) stimulation on gait and postural instability in Parkinson's disease (PD), we compared gait kinematic parameters and preparatory postural adjustments before and 3 months after stimulation in off‐ and on‐drug conditions for seven patients. Gait kinematic parameters and displacements of centre of pressure (CP) and shoulder computed before a lateral raising task of the leg, were recorded using optoelectric Vicon system. Levodopa (L‐dopa) induced a clear benefit for gait velocity (related to an increase of stride length) and also an increase of swing phase duration. GPi stimulation had a limited effect, since the increase of gait velocity was induced by a concomitant increase of stride length and cadence corresponding to a compensatory mechanism. The benefit on swing phase duration was also moderate. Displacements of CP were improved mainly by L‐dopa. GPi stimulation and L‐dopa had the same beneficial effect on the speed at which the CP was transferred back towards the support side, the ankle velocity, the onset time for ankle displacement, and the decrease of shoulder amplitude towards the support side, which reflects a better postural adjustment phase. This study, based on an objective method, revealed that chronic bilateral GPi stimulation may improve gait and preparatory postural adjustments in severe PD patients with a more limited effect than L‐dopa. © 2001 Movement Disorder Society.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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