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Ipsilateral thalamic stimulation after thalamotomy for essential tremor. A case report
B A Racette1, K M Rich, J Randle
1Department of Neurology, Washington University School of Medicine, St. Louis, MO 63110, USA. racetteb@neuro.wustl.edu
Stereotactic and Functional Neurosurgery
|March 23, 2002
Summary
Deep brain stimulation of the thalamus (thalamic stimulation) effectively treated severe essential tremor that recurred after a previous thalamotomy. This treatment provided sustained tremor control in a patient with a history of prior ipsilateral thalamotomy.
Area of Science:
- Neurosurgery
- Neurology
- Medical Devices
Background:
- Essential tremor is a common neurological disorder.
- Thalamotomy is a surgical procedure to treat essential tremor.
- Recurrence of tremor after thalamotomy can occur.
Observation:
- A patient with severe essential tremor underwent thalamic stimulation.
- The patient had a prior thalamotomy on the same side (ipsilateral) 30 years earlier.
- The prior thalamotomy provided temporary tremor relief.
Findings:
- Implantation of an electrode in the thalamic nucleus ventralis intermedius (Vim) resulted in significant tremor reduction.
- Sustained tremor control was observed over an 18-month follow-up period.
- Vim thalamic stimulation proved effective for recurrent tremor post-thalamotomy.
Implications:
- Thalamic stimulation is a viable treatment for essential tremor recurrence after thalamotomy.
- This approach offers a potential solution for patients with long-standing tremor despite previous surgical interventions.
- The findings support the long-term efficacy of Vim thalamic stimulation in complex essential tremor cases.