Stereotactic pallidotomy in extrapyramidal disorders.

The results of stereotactic pallidotomy in 37 patients with extrapyramidal disorders are presented. All patients had the same RF lesions and target coordinates. The patients are classified into 5 groups according to the clinical picture. These results are compared with those obtained by thalamotomy in a similar group of patients. The main indications for pallidotomy are given. The spatial representation of globus pallidus medialis according to Andrews and Watkins, Talairach and the author are shown and their differences discussed.