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CT guided thalamotomy for movement disorders in multiple sclerosis: problems and paradoxes
1Department of Clinical Neurosciences, Western General Hospital, Edinburgh, Scotland, U.K.
Acta Neurochirurgica. Supplement
|January 1, 1995
Summary
Unilateral ventrolateral thalamotomy effectively reduced tremor in multiple sclerosis patients. However, long-term functional outcomes were disappointing for most, highlighting the need for subgroup analysis.
Area of Science:
- Neurosurgery
- Neurology
- Movement Disorders
Background:
- Medically refractory tremor is a debilitating symptom in multiple sclerosis (MS).
- Stereotactic thalamotomy offers a potential treatment for severe tremor.
- Ventrolateral (VL) thalamotomy has been explored for tremor control.
Purpose of the Study:
- To evaluate the efficacy and safety of unilateral VL thalamotomy in MS patients with tremor.
- To assess the functional outcomes and potential predictors of success.
Main Methods:
- Nine patients with MS and medically refractory tremor underwent unilateral VL thalamotomy.
- Surgical targets were defined stereotactically relative to the intercommissural line and midline.
- Patient assessments included tremor severity, arm/hand function, posture, and speech.
Main Results:
- Complete abolition of coarse action/kinetic tremor was achieved in all patients.
- Significant improvement in arm and hand function was observed.
- Two patients experienced persistent or unmasked intention tremor.
- No permanent surgical complications occurred; the procedure was well-tolerated.
- Overall long-term functional impact was disappointing in most patients, except for two.
Conclusions:
- Unilateral VL thalamotomy is safe and effective for tremor suppression in MS.
- Predicting long-term functional outcomes requires comprehensive assessments and subgroup analysis.
- Further research is needed to identify patient subgroups who benefit most from this intervention.