splitting of the embryoblast from days 4 to 12 postconception results in monochorionic placentation. division following day 12pc is likely to result in conjoined twins. monochorionic twins share the chorion (the outer membrane) and may or may not share the amnion (the inner membrane). when they share the amnion the twins are called monoamniotic and when they do not they are called diamniotic. they are at risk for twin-twin transfusion, twin embolisation syndrome as well as a general increased risk of congenital malformation, growth restriction and prematurity.<\/p>\n","protected":false},"author":10,"featured_media":0,"menu_order":0,"template":"","tags":[23],"class_list":["post-4043","x5_anomaly_database","type-x5_anomaly_database","status-publish","hentry","tag-obstetric"],"_links":{"self":[{"href":"\/\/www.iolishoes.com\/wp-json\/wp\/v2\/x5_anomaly_database\/4043","targethints":{"allow":["get"]}}],"collection":[{"href":"\/\/www.iolishoes.com\/wp-json\/wp\/v2\/x5_anomaly_database"}],"about":[{"href":"\/\/www.iolishoes.com\/wp-json\/wp\/v2\/types\/x5_anomaly_database"}],"author":[{"embeddable":true,"href":"\/\/www.iolishoes.com\/wp-json\/wp\/v2\/users\/10"}],"version-history":[{"count":0,"href":"\/\/www.iolishoes.com\/wp-json\/wp\/v2\/x5_anomaly_database\/4043\/revisions"}],"wp:attachment":[{"href":"\/\/www.iolishoes.com\/wp-json\/wp\/v2\/media?parent=4043"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"\/\/www.iolishoes.com\/wp-json\/wp\/v2\/tags?post=4043"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}