医学奖授给了一位内科医生，他50年来每天不断扳左手手指，以验证自己母亲说扳手指会引发关节炎的话是否正确，他的结论是：妈妈，你错了。
The medicine prize went to a physician who, for fifty years, cracked the knuckles on only his left hand to test his mother's contention that knuckle-cracking causes arthritis.
正常生理状态下斜扳，后伸位应力大于前屈位而小于自然中立位。
Under normal physiologic condition, the stress in posterior extension is greater than that in anterior flexion, but less than in neutral position.
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