Lateralized Effects of Unilateral Thalamotomy and Thalamic Stimulation in Patients with Essential Tremor

Background and Purpose Stereotactic thalamotomy has been an effective surgical procedure in the treatment of medically refractory essential tremor (ET), however, little is known about the bilateral effects of unilateral ventralis intermedius (Vim) thalamotomy and Vim deep brain stimulation (DBS). We...

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Main Authors: Mi J. Kim, Sang R. Jeon, Sung R. Kim, Myoung C. Lee, Sun J. Chung
Format: Article
Language:English
Published: Korean Movement Disorder Society 2011-10-01
Series:Journal of Movement Disorders
Subjects:
Online Access:http://e-jmd.org/upload/jmd-4-2-64-3.pdf
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author Mi J. Kim
Sang R. Jeon
Sung R. Kim
Myoung C. Lee
Sun J. Chung
author_facet Mi J. Kim
Sang R. Jeon
Sung R. Kim
Myoung C. Lee
Sun J. Chung
author_sort Mi J. Kim
collection DOAJ
description Background and Purpose Stereotactic thalamotomy has been an effective surgical procedure in the treatment of medically refractory essential tremor (ET), however, little is known about the bilateral effects of unilateral ventralis intermedius (Vim) thalamotomy and Vim deep brain stimulation (DBS). We studied the lateralized effects of unilateral Vim thalamotomy and Vim DBS in ET patients. Methods Vim thalamotomy was performed in 6 patients and Vim DBS in 6. Patients were evaluated preoperatively and at 3 and 6 months postoperatively using the Clinical Rating Scale for Tremor (CRST). Results The contralateral Part A (tremor localization/severity rating) and Part B (specific motor tasks/function rating) subscores, and axial subscores of CRST significantly improved after unilateral Vim thalamotomy or Vim DBS. On the side ipsilateral to surgery, ET patients demonstrated no significant improvements in the Part A and Part B subscores of CRST. The Part C (functional disabilities resulting from tremor) subscores and total scores of CRST were significantly improved after surgery. Conclusions Vim thalamotomy and DBS may be equally effective for the management of contralateral and axial tremor in ET patients, but both interventions may not improve tremor on the side ipsilateral to surgery.
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spelling doaj.art-7ae0c5eedfc3415a88cbaedb74eff1492023-09-02T18:56:14ZengKorean Movement Disorder SocietyJournal of Movement Disorders2005-940X2093-49392011-10-0142646710.14802/jmd.1101325Lateralized Effects of Unilateral Thalamotomy and Thalamic Stimulation in Patients with Essential TremorMi J. KimSang R. JeonSung R. KimMyoung C. LeeSun J. ChungBackground and Purpose Stereotactic thalamotomy has been an effective surgical procedure in the treatment of medically refractory essential tremor (ET), however, little is known about the bilateral effects of unilateral ventralis intermedius (Vim) thalamotomy and Vim deep brain stimulation (DBS). We studied the lateralized effects of unilateral Vim thalamotomy and Vim DBS in ET patients. Methods Vim thalamotomy was performed in 6 patients and Vim DBS in 6. Patients were evaluated preoperatively and at 3 and 6 months postoperatively using the Clinical Rating Scale for Tremor (CRST). Results The contralateral Part A (tremor localization/severity rating) and Part B (specific motor tasks/function rating) subscores, and axial subscores of CRST significantly improved after unilateral Vim thalamotomy or Vim DBS. On the side ipsilateral to surgery, ET patients demonstrated no significant improvements in the Part A and Part B subscores of CRST. The Part C (functional disabilities resulting from tremor) subscores and total scores of CRST were significantly improved after surgery. Conclusions Vim thalamotomy and DBS may be equally effective for the management of contralateral and axial tremor in ET patients, but both interventions may not improve tremor on the side ipsilateral to surgery.http://e-jmd.org/upload/jmd-4-2-64-3.pdfEssential tremorThalamotomyDeep brain stimulation
spellingShingle Mi J. Kim
Sang R. Jeon
Sung R. Kim
Myoung C. Lee
Sun J. Chung
Lateralized Effects of Unilateral Thalamotomy and Thalamic Stimulation in Patients with Essential Tremor
Journal of Movement Disorders
Essential tremor
Thalamotomy
Deep brain stimulation
title Lateralized Effects of Unilateral Thalamotomy and Thalamic Stimulation in Patients with Essential Tremor
title_full Lateralized Effects of Unilateral Thalamotomy and Thalamic Stimulation in Patients with Essential Tremor
title_fullStr Lateralized Effects of Unilateral Thalamotomy and Thalamic Stimulation in Patients with Essential Tremor
title_full_unstemmed Lateralized Effects of Unilateral Thalamotomy and Thalamic Stimulation in Patients with Essential Tremor
title_short Lateralized Effects of Unilateral Thalamotomy and Thalamic Stimulation in Patients with Essential Tremor
title_sort lateralized effects of unilateral thalamotomy and thalamic stimulation in patients with essential tremor
topic Essential tremor
Thalamotomy
Deep brain stimulation
url http://e-jmd.org/upload/jmd-4-2-64-3.pdf
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