It creates a sound that sets teeth on edge and, we’re often told, raises the risk of arthritis.
掰指关节的声音让人很不舒服,而且我们常被告知,掰指关节会增加患关节炎的风险。
But people who can crack their knuckles may actually have healthier joints than others.
但实际上,那些“咔咔地掰指关节的人比其他人拥有更健康的关节。
Scientists say that the force involved in making fingers ‘pop’ is more than enough to cause damage.
科学家称,让关节发出“咔的一声的力量足以给关节带来损伤。
Yet, studies show that regular knuckle-cracking doesn’t seem to do any harm.
然而,一些研究显示,经常掰指关节并不会对关节有伤害。
This suggests it is actually a sign of very healthy joints.
这意味着,关节发出响声是显示关节非常健康的迹象。
The theory comes from Canadian researchers who used MRI scanners to peer deep inside the fingers and record just what happens when knuckles are cracked.
这一理论出自加拿大的研究员,他们用磁共振扫描仪观察手指内部,记录在指关节发出响声时里面发生了些什么。
One of the team, a ‘gifted knuckle-cracker’, put one finger at a time into a tube connected to a cable.
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