Hypokinetic gait changes induced by bilateral pallidal deep brain stimulation for segmental dystonia
Background - Deep brain stimulation (DBS) of the globus pallidus internus (GPi) has been established as an effective and safe treatment for dystonia. In general, side effects are rare, but there is increasing evidence that GPi DBS in dystonia can induce hypokinetic symptoms like micrographia or free...
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| Main Authors: | , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
September 2016
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| In: |
Gait & posture
Year: 2016, Volume: 49, Pages: 358-363 |
| ISSN: | 1879-2219 |
| DOI: | 10.1016/j.gaitpost.2016.07.301 |
| Online Access: | Verlag, Volltext: https://doi.org/10.1016/j.gaitpost.2016.07.301 Verlag: http://www.sciencedirect.com/science/article/pii/S0966636216304453 
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| Author Notes: | Marc E. Wolf, Hans H. Capelle, Hansjörg Bäzner, Michael G. Hennerici, Joachim K. Krauss, Christian Blahak |
MARC
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| 245 | 1 | 0 | |a Hypokinetic gait changes induced by bilateral pallidal deep brain stimulation for segmental dystonia |c Marc E. Wolf, Hans H. Capelle, Hansjörg Bäzner, Michael G. Hennerici, Joachim K. Krauss, Christian Blahak |
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| 520 | |a Background - Deep brain stimulation (DBS) of the globus pallidus internus (GPi) has been established as an effective and safe treatment for dystonia. In general, side effects are rare, but there is increasing evidence that GPi DBS in dystonia can induce hypokinetic symptoms like micrographia or freezing of gait. We aimed to evaluate and quantify possible changes of gait following bilateral chronic GPi DBS for dystonia by computerized gait analyses. - Methods - We prospectively performed computerized gait analysis in ten consecutive patients (mean age 57.8+/−14.3 years) with segmental dystonia but without involvement of lower trunk or legs who were treated with bilateral GPi DBS. Using pressure sensitive insoles, several parameters were measured preoperatively (pre-OP) and at a median of 7 months postoperatively. - Results - The mean step length significantly decreased from 60.0+/−6.9cm pre-OP to 54.3+/−6.4cm with GPi DBS (p<0.01). Due to only small changes of walking distance and gait velocity, the cadence correspondingly increased from 105.6+/−9.2 steps/min to 111.3+/−11.4 steps/min (p<0.05). More importantly, the variance of several gait parameters significantly decreased postoperatively. - Conclusions - In patients with segmental dystonia, chronic DBS of the posteroventral lateral GPi is associated with only mild hypokinesia of gait, but with a relevant decrease in gait variability. Given other recently reported hypokinetic effects of GPi DBS for dystonia and recent results of electrophysiological coherence studies, these findings support the hypothesis of a general alteration of neuronal activity in striato-pallido-thalamo-cortical motor pathways following chronic stimulation of the posteroventral lateral GPi. | ||
| 650 | 4 | |a Deep brain stimulation | |
| 650 | 4 | |a Dystonia | |
| 650 | 4 | |a Gait | |
| 650 | 4 | |a Globus pallidus internus | |
| 650 | 4 | |a Hypokinesia | |
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