Arachnodactyly
Template:Infobox medical condition (new) Arachnodactyly ("spider fingers") is a medical condition that is characterized by fingers and toes that are abnormally long and slender, in comparison to the palm of the hand and arch of the foot. In some cases, the thumbs of an individual with the condition are pulled inwards towards the palm. This condition is present at birth.
CausesEdit
This feature can occur on its own with no underlying health problems,<ref name="p882">{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> or it can be associated with certain medical conditions, including Marfan syndrome,<ref name="pmid1856834">Template:Cite journal</ref> Ehlers–Danlos syndromes,<ref>Template:Cite book</ref> Loeys–Dietz syndrome, and homocystinuria.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> It is also seen in congenital contractural arachnodactyly,<ref name="Viljoen">Template:Cite journal</ref> which is caused by mutation in the gene encoding fibrillin-2 on chromosome 5q23.<ref>Template:Cite journal</ref>
Notable casesEdit
It remains unconfirmed whether composer Sergei Rachmaninoff's abnormally large reach on a piano was a result of arachnodactyly due to Marfan syndrome, as the pianist exhibited no other signs of the disease.<ref name="Rach">{{#invoke:citation/CS1|citation |CitationClass=web }}Template:Dead link</ref>
See alsoEdit
ReferencesEdit
External linksEdit
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Template:Congenital malformations and deformations of musculoskeletal system