[Prospect of neurosurgical approach to Parkinson's disease in the 21st century].

After a brief review of the past and present status of stereotactic surgery, prospect of neurosurgical approach to Parkinson's disease in the 21st century was considered. The stereotactic surgery has progressed markedly in its technical and theoretical aspects due to the rapid development of the basic neuroscience and computerized imaging technique. Although there are some points to be clarified and estimated in the future, these new tendencies will stand to the next century, and further progress will be achieved if it contains some truth in the light of the modern neuroscience. Also it should be clinically effective, safety and smart. The idea of stereotaxy since the beginning, namely the maximum effect with minimal damage of the human brain always holds true.