Amniotic band syndrome (ABS, also called amniotic band constriction, congenital constriction bands or rings, ADAM (amniotic deformity adhesions mutilations)) is a
congenital disorder caused by entrapment of fetal parts (usually a limb or digits) in fibrous amniotic bands while in utero.
Sideshow performer Jeanie Tomaini (nee Bernice Smith) had congenitally absent legs (
congenital amputation), and deformed arms (
dysmelia), due to ABS.
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