About this bank
A free companion to the USMLE® Board Mastery books by TheCodexes, for Step 1 and Step 2 CK. Every plate pairs an exam-grade image with what the exam asks about it. Quiz mode hides the answer so you can test yourself first.
Licensing
Images come from Wikimedia Commons (public domain, CC0, CC BY, CC BY-SA) and open-access PubMed Central articles (CC BY). Original TheCodexes diagrams carry the licence shown on each plate: earlier diagrams may be CC BY-NC 4.0, while the new mastery diagrams are CC BY 4.0. Each plate credits its author and licence; cropped or resized versions of CC BY-SA images are shared under the same licence.
How to use it
Open a plate, name the finding, then read what matters on the exam. On diagrams, hover or tap any label for its high-yield fact. Use ← and → to move between plates and Esc to close.
Licensing notice. Tremendous effort has been made to ensure that every image and all other media on this site are free to use under their respective licences (public domain, CC0, CC BY, CC BY-SA, or CC BY-NC, as shown on each plate), with the author, licence and source credited on each plate. If any item has been included that is not covered by a free-to-use licence, it is an honest mistake, and it will be removed from the website as soon as we become aware of it. To report an item, please contact us through admin@thecodexes.com.
