Table 6

Lesion location in relation to UPDRS 3 off phase change scores (preoperative minus 6 months postoperative score)

Lesion locationPatientsPreoperative UPDRS 3 off phase scoreChange score
ScoreRangeScoreRange
GPi244.524/65156/24
GPe24342/441915/23
Putamen1198
GPi and GPe115638/81191/32
GPi, GPe, and putamen27253/9123.515/32
GPe and putamen14318
GPi, GPe, and IC147−13
No lesion visible45144/63187/27
  • GPi=Internal segment of the globus pallidus; GPe=external segment of the globus pallidus; IC=internal capsule; minus sign indicates deterioration.