# How to measure length long bones in a reproductible way?

**URL:** <https://discourse.slicer.org/t/how-to-measure-length-long-bones-in-a-reproductible-way/10447>\
**Category:** Support\
**Created:** [February 26, 2020, 5:23pm UTC](https://discourse.slicer.org/t/how-to-measure-length-long-bones-in-a-reproductible-way/10447 "2020-02-26T17:23:45Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Tijigame](https://avatars.discourse-cdn.com/v4/letter/t/51bf81/32.png) [@Tijigame](https://discourse.slicer.org/u/Tijigame)\
**Post date:** [February 26, 2020, 5:23pm UTC](https://discourse.slicer.org/t/how-to-measure-length-long-bones-in-a-reproductible-way/10447/1 "2020-02-26T17:23:45Z")

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Hi, i have to segment fetal bone and measure their volume, surface area and length. Thanks to Segmentation statistics i can have access to the volume and the surface area of segmented bones, however i don’t find a way to measure the length of bones in a reproductible way. Ideally a bounding box which imprisons the bone and gives its maximum length will be great. But i don’t find a tool like this in 3D slicer. This is why I’m turning to you. I’m new to this software. So, if you have any idea to do this, i will be greatly thankful to have your help.

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**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [February 26, 2020, 6:08pm UTC](https://discourse.slicer.org/t/how-to-measure-length-long-bones-in-a-reproductible-way/10447/2 "2020-02-26T18:08:50Z")

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We recently added oriented bounding box size computation - see this topic for details: [New Segment Statistics: Oriented Bounding Box, Diameter and More](https://discourse.slicer.org/t/new-segment-statistics-oriented-bounding-box-diameter-and-more/10203)

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**Author:** ![Tijigame](https://avatars.discourse-cdn.com/v4/letter/t/51bf81/32.png) [@Tijigame](https://discourse.slicer.org/u/Tijigame)\
**Post date:** [February 26, 2020, 10:33pm UTC](https://discourse.slicer.org/t/how-to-measure-length-long-bones-in-a-reproductible-way/10447/3 "2020-02-26T22:33:32Z")

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Oh you help me so much, thank you !!