Journal
MOVEMENT DISORDERS
Volume 28, Issue 10, Pages 1451-1455Publisher
WILEY
DOI: 10.1002/mds.25560
Keywords
globus pallidus; deep brain stimulation; DBS; cervical dystonia
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BackgroundImprovement after bilateral globus pallidus internus deep brain stimulation (DBS) in primary generalized dystonia has been negatively associated with disease duration and age, but no predictive factors have been identified in primary cervical dystonia (CD). MethodsPatients treated with bilateral globus pallidus internus DBS for primary CD from 2 DBS centers with preoperative and postoperative Toronto Western Spasmodic Torticollis Rating Scales (TWSTRS) were studied retrospectively to explore possible predictors of response. ResultsPatients showed significantly improved TWSTRS total and severity scores (n=28, mean 55.6% and 50.8%, respectively, both P<.001). Patients with lateral shift at baseline had less improvement in TWSTRS severity subscores (P=.02). No correlations between outcomes and disease duration, age at dystonia onset or surgery, baseline scores, or other included variables were found. ConclusionsAlthough this is the largest study supporting efficacy of bilateral pallidal DBS in primary CD, no major clinical predictive outcomes of surgical benefit were identified. (c) 2013 International Parkinson and Movement Disorder Society
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