Is pallidotomy effective in the treatment of Parkinson disease (PD)?

Updated: Aug 29, 2019
  • Author: Robert A Hauser, MD, MBA; Chief Editor: Selim R Benbadis, MD  more...
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Svenillson and Leksell described ventral posterior pallidotomy in the 1960s [95] ; however, their report was largely overlooked. The original pallidotomy target was in the medial and anterodorsal part of the nucleus. This so-called medial pallidotomy effectively relieved rigidity but inconsistently improved tremor. Leksell subsequently moved the target to the posteroventral and lateral GPi, resulting in sustained improvement in as many as 96% of patients. In 1992, Laitinen et al reported reduced tremor, rigidity, akinesia, and levodopa-induced dyskinesia in 38 patients treated with pallidotomy, prompting a reappraisal of the procedure performed with more modern techniques. [96]

Pallidotomy involves destruction of a part of the GPi. Pallidotomy studies have demonstrated significant improvements in each of the cardinal symptoms of Parkinson disease (tremor, rigidity, bradykinesia), as well as a significant reduction in dyskinesia.

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