# Crural Index and the Chinese

**URL:** <https://boards.straightdope.com/t/crural-index-and-the-chinese/377996>\
**Category:** Factual Questions\
**Created:** [October 26, 2006, 4:25pm UTC](https://boards.straightdope.com/t/crural-index-and-the-chinese/377996 "2006-10-26T16:25:22Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Yellow\_Rights](https://avatars.discourse-cdn.com/v4/letter/y/6a8cbe/32.png) [@Yellow\_Rights](https://boards.straightdope.com/u/Yellow_Rights)\
**Post date:** [October 26, 2006, 4:25pm UTC](https://boards.straightdope.com/t/crural-index-and-the-chinese/377996/1 "2006-10-26T16:25:22Z")

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So I heard that the smaller the ratio between the Femur and Tibia, the colder the place you live in. So how come people from Northern China (cold) are supposedly taller on average than the Southern Chinese (warm)?

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**Author:** ![Canadjun](https://avatars.discourse-cdn.com/v4/letter/c/76d3ee/32.png) [@Canadjun](https://boards.straightdope.com/u/Canadjun)\
**Post date:** [October 26, 2006, 4:50pm UTC](https://boards.straightdope.com/t/crural-index-and-the-chinese/377996/2 "2006-10-26T16:50:17Z")

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That’s a non-sequitur. Why would different ratios between the sizes of your upper and lower legs imply differences in height?

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**Author:** ![Yellow\_Rights](https://avatars.discourse-cdn.com/v4/letter/y/6a8cbe/32.png) [@Yellow\_Rights](https://boards.straightdope.com/u/Yellow_Rights)\
**Post date:** [October 26, 2006, 9:40pm UTC](https://boards.straightdope.com/t/crural-index-and-the-chinese/377996/3 "2006-10-26T21:40:56Z")

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Oh 'cause umm, this thing on evolution said that Innuits have much shorter tibias compared to the Masai who have tibia’s almost as long as their femurs.