Results of Chemopallidectomy and Chemothalamectomy

Abstract
It is the purpose of this paper to present clinical and statistical data on the effects of both chemopallidectomy and chemothalamectomy1-5as carried out in a group of patients 60 years of age and over in order to elucidate the problems involving the indication for operation, as well as the outcome of the surgical procedures. Design From a total of 490 patients with Parkinsonism who underwent chemopallidectomy or chemothalamectomy between July, 1956, and December, 1958, we selected as subjects 100 consecutive cases 60 years of age or older. This represents 20.4% of the group undergoing surgery during that period. The data concerning preoperative findings, operations, and immediate postoperative results were accumulated from the available data of the hospital records. For the long-range follow-up study, questionnaires were prepared and sent to all the patients under consideration. The items of the questionnaires were based on the Parkinsonian stigmata and general

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