Fanconi anemia is a rare inherited condition that can affect the thumbs. Some people with the condition may be born with extra, missing, or misshapen thumbs. While Fanconi anemia does not affect the ...

In a world where most people have ten fingers (five on each hand) — there are a few who are born with an extra finger. This rare condition, called polydactyly, means having more than the usual number ...

Amanda Meyer is affiliated with the Australian and New Zealand Association of Clinical Anatomists, the American Association for Anatomy, and the Global Neuroanatomy Network. Alexandra Trollope does ...