Movement Disorders (revue)

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Influence of pallidal stimulation and levodopa on gait and preparatory postural adjustments in Parkinson's disease

Identifieur interne : 004428 ( Main/Exploration ); précédent : 004427; suivant : 004429

Influence 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 :

RBID : ISTEX:32AD527100BE5F9DBA677ED9752C9D1A2C8122AB

Descripteurs français

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.

Url:
DOI: 10.1002/mds.1262


Affiliations:


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Le document en format XML

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<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>
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