Opisthion

Last revised by Derek Smith on 19 Jun 2022

Citation, DOI, disclosures and article data

Citation:

Hacking C, Smith D, Weerakkody Y, et al. Opisthion. Reference article, Radiopaedia.org (Accessed on 20 Apr 2024) https://doi.org/10.53347/rID-40453

DOI:

https://doi.org/10.53347/rID-40453

Permalink:

https://radiopaedia.org/articles/40453?iframe=true

rID:

40453

Article created:

22 Oct 2015, Craig Hacking ◉ ◈

Disclosures:

At the time the article was created Craig Hacking had no recorded disclosures.

Last revised:

19 Jun 2022, Derek Smith ◉

Disclosures:

At the time the article was last revised Derek Smith had no financial relationships to ineligible companies to disclose.

Revisions:

5 times, by 4 contributors - see full revision history and disclosures

Systems:

Central Nervous System, Head & Neck

Sections:

Anatomy

The opisthion is the median (midline) point of the posterior margin of the foramen magnum.

It is one of the skull landmarks, craniometric points for radiological or anthropological skull measurement.

Various lines and measurements using the opisthion are made in the diagnosis of atlanto-occipital dissociation (AOD) injuries, platybasia and basilar invagination:

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