Uploading images to the wiki is easy. You have two options:
1. On the main page the Upload Wizard will walk you through the whole process and even allow for credits and copyright acknowledgements.
2. While editing an article or creating a new one you can choose the upload button to upload an image.
For example:
[[File:Hangman fracture.png|thumb|Hangman's Fracture]] will display the hangman fracture image as a thumbnail with the caption "Hangman's Fracture"