# Animation of a spinal disk

**URL:** <https://forum.kirupa.com/t/animation-of-a-spinal-disk/253937>\
**Category:** Uncategorized\
**Created:** [March 6, 2008, 5:00pm UTC](https://forum.kirupa.com/t/animation-of-a-spinal-disk/253937 "2008-03-06T17:00:31Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![randomagain](https://avatars.discourse-cdn.com/v4/letter/r/35a633/32.png) [@randomagain](https://forum.kirupa.com/u/randomagain)\
**Post date:** [March 6, 2008, 5:00pm UTC](https://forum.kirupa.com/t/animation-of-a-spinal-disk/253937/1 "2008-03-06T17:00:31Z")

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you learn something everyday…

I need to animate a spinal disk, a cross between an onion, rubber bands and an egg sandwich.

if that makes any sense :ch:

in short when you lean forward the “yoke” moves back, and the rubberband/onion bit surrounding the yoke streaches and compresses, held together with two pieces of bread top and bottom.

from side…  
 ![](http://img411.imageshack.us/img411/8746/diskjo0.jpg)

however from the top its like a circle, and so the ability to make it look like it is compressing in one area and streaching in another is beyond me.

any great animator tips? thanks