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[Stereotaxic surgery in 4 cases of Parkinson's disease].

OBJECTIVE
To determine the therapeutic efficiency of the stereotactic thalamotomy in patients with Parkinson's disease not responsive to medical treatment.


METHODS
We performed four stereotactic thalamotomies using Leksell's system for the inactivation of the thalamic ventrolateralis nucleus.


RESULTS
Upon re-examination 5 to 58 months after surgery, complete relief of tremor, rigidity and pain was observed; only one case showed a light tremor in the contralateral side three months after surgery.


CONCLUSION
Stereotactic thalamotomy is of benefit for the control of medically refractory parkinsonism.