"Congenital limb deficiencies occur in 2 to 7 per 10000 live births 3,4."
"Fanconi anaemia 1,2"
"Currently (c. 2024) the preferred terminology for limb deficiencies is based on the anatomic classification. Terms such as hemimelia, aphalangia, and adactyly, many of which were popularised by the Frantz and O'Rahilly classification of skeletal limb deficiencies, are commonly adopted, but their use is discouraged because they are often imprecise 1."
"Some terms used to describe limb deficiencies are also currently (c. 2024) considered pejorative, such as phocomelia and lobster claw 1."