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Related Experiment Videos

Stereotactic thalamotomy for medically intractable essential tremor.

M S Goldman1, P J Kelly

  • 1Department of Neurosurgery, Mayo Clinic, Rochester, Minn.

Stereotactic and Functional Neurosurgery
|January 1, 1992
PubMed
Summary

Ventrolateral (VL) thalamotomy effectively treated essential tremor, significantly reducing disability and improving voice tremor in most patients. This surgical option offers substantial symptomatic relief for medically refractory cases.

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Area of Science:

  • Neurosurgery
  • Neurology
  • Movement Disorders

Background:

  • Essential tremor (ET) is a common neurological disorder.
  • Medically refractory ET significantly impacts quality of life.
  • Symptomatic and functional outcomes of ventrolateral (VL) thalamotomy for ET are not well-documented.

Purpose of the Study:

  • To evaluate the surgical symptomatic and functional outcomes of VL thalamotomy in patients with medically refractory essential tremor.
  • To assess the efficacy of VL thalamotomy in improving tremor-related disability and voice tremor.

Main Methods:

  • A series of 8 patients (7 unilateral, 1 staged bilateral) with disabling, medically refractory essential tremor underwent VL thalamotomy.
  • Patients were assessed postoperatively with a mean follow-up of 17.3 months (range 1-50 months).

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  • Tremor severity and functional disability were evaluated using a modified established rating scale.

    • Main Results:

    • All patients experienced complete ablation or significant amelioration of tremor.
    • Tremor-related disability decreased from moderate/severe (100%) to absent (86%) or mild (14%) at follow-up.
    • Voice tremor improved or resolved in 71.4% of patients who had preoperative voice tremor.

    Conclusions:

    • Unilateral and staged bilateral VL thalamotomy are effective surgical options for medically refractory essential tremor.
    • The procedure leads to significant improvements in both symptomatic tremor control and functional disability.
    • VL thalamotomy demonstrates a notable positive impact on associated voice tremor.