Radiopaedia.org is a free educational radiology resource with one of the web's largest collections of radiology cases and reference articles.

Case of the Day

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Lateral sulcus sign

Contributed by Dr Craig Hacking

The patient went on to have a MRI which showed an ACL rupture.

What is Radiopaedia.org ?

Radiopaedia is a rapidly growing open-edit educational radiology resource which has been primarily compiled by radiologists and radiology trainees from across the world. Our mission is to create the best radiology reference, and to make it available for free, forever... read more

How to get involved

If you are new to Radiopaedia.org or interested in contributing or collaborating for the first time, we recommend familiarisation with a few initial steps.

The following YouTube screencast tutorials cover the very basics in creating articles and cases:

If you just want to have a practice on how editing works - do have a play in our "sandbox" page.

Editorial projects

Our editors are always hard at work creating and refining site content. You can find a list of current and past editorial projects here

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Radiopaedia.org is more than just a reference site.

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