Monochorionic means that they share one placenta and are therefore inside one large chorion.
Diamniotic means they they have a thin wispy membrane that separates the twins so that they cannot touch skin to skin.
The chances of having MoDi twins is 1 in 1,000.
What does MoDi twins mean?
Monochorionic twins generally have two amniotic sacs (called Monochorionic-Diamniotic “MoDi”), but sometimes, in the case of monoamniotic twins (Monochorionic-Monoamniotic “MoMo”), they also share the same amniotic sac. Monoamniotic twins are always monozygotic (identical twins).
What is the survival rate of identical twins?
Studies show an 80 to 85 percent survival rate for at least one twin following laser ablation and an overall twin survival rate of 65 to 70 percent.
Are Monochorionic Diamniotic twins identical?
Monochorionic-diamniotic twins are identical twins who share a placenta but not an amniotic sac.
What is the difference between mono twins and identical twins?
Monoamniotic twins are identical twins that share the same amniotic sac within their mother’s uterus. Monoamniotic twins are always identical, always monochorionic and are usually termed Monoamniotic-Monochorionic (“MoMo” or “Mono Mono”) twins. They share the placenta, but have two separate umbilical cords.