... Parkinson Disease Rating Scale) total motor scores (17% to 46% decrease from baseline) and on-period drug-induced ... to 92% of patients and less than 80% in his own series. [17] Complications specific to thalamotomy include ... in 117 patients (80 PD, 20 essential tremor, and 17 other) with more than 85% left with little or no tremor in ...