Our standard

1. Every claim carries a named source. A textbook with its edition and page, or a paper with its DOI or PubMed identifier. The source is visible to you, not buried in a bibliography nobody reads.
2. References are resolved at source. Every citation is looked up and confirmed to exist, to be by the authors named, and to say what we say it says. This is not routine, and it is not paranoia. A reference list is the easiest place in any document for something unchecked to hide.
3. Every item is written and reviewed by a practising surgeon before release. Not by a copywriter working from a textbook, and not by a model working from the internet. Someone who operates writes it, from primary sources rather than from other people's summaries of them, and nothing is published until it has been read again against those sources. Where there is disagreement, it is settled by going back to the original paper rather than by seniority.
4. Item statistics are published, not hidden. Once enough people have answered a question we show its difficulty and its discrimination, so you can see which items are doing real work.
5. Weak items are retired automatically. Anything with a discrimination below about 0.15, or a difficulty outside roughly 0.2 to 0.9, is pulled for review rather than left in to pad the question count. The thresholds are published so you can check we are applying them.
6. No anatomical illustration here is AI generated. Not now, not later. Image generators misplace foramina, get coronary and aortic branching wrong and cannot count ribs reliably, and a good deal of the online anatomy market is currently shipping the results. Everything anatomical on this site is drawn or verified by a human who knows the structure.
7. Corrections are public. When we get something wrong we log it with the date, what changed and why. The log stays up and is here, including while it is empty. Nobody else in this market publishes one, which is exactly why it is worth doing.

If you find an error, we want it. Send it with a source and it goes in the log with an acknowledgement.