After being warned by his mother to swear off that demon knuckle cracking, young Donald Unger tested the accuracy of this hypothesis on himself.

自从小时候受到母亲警告说不可以敲打指关节后，小唐就开始在自己的身上测试这种推断的准确性。

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To Donald Unger, a doctor in Thousand Oaks, California, who cracked the knuckles of his left hand, but never those on his right, every day for 60 years to investigate whether it caused arthritis.

授予加州千橡市的一名医生——唐纳德·昂格尔（Donald Unger），60年来的每一天，他把左手指节掰得咯吱作响，但从不掰右手指节，研究这样做是否会引起关节炎。

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Winner of the Medicine prize was 83-year-old Donald L. Unger from Thousand Oaks in California who cracked the knuckles of his left hand every day for over sixty years.

获得医学奖的是来自加利福尼亚千橡市83岁高龄的唐纳德·L·昂格尔，他在过去的六十多年里每天都扳左手的指关节。

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