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The Leksell Gamma Knife is a useful and safe method to perform thalamotomy and pallidotomy in selected older patients with Parkinson's disease and related movement disorders. In this preliminary report, 2 of 3 patients with severe intention tremor were relieved of their symptoms by thalamotomy, as were 4 of 7 patients with Parkinson's tremor. Four of 8 patients had significant improvement of contralateral rigidity following pallidotomy.
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Rand et al. (1993) studied this question.
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