The distinction between an arcuate uterus and a septate uterus is not standardized.

Accodingly it was the most common uterine anomaly, followed by septate uterus (3%) and bicornuate uterus (0.5%).

The condition is much less common than these other uterine malformations: arcuate uterus, septate uterus, and bicornuate uterus.

In contrast, in about 15% of patients with recurrent pregnancy loss anatomical problems are thought to be causative with the septate uterus as the most common finding.

Uterine malformations mainly congenital malformations including Uterine Didelphys, bicornuate uterus and septate uterus.

A hysterosalpingogram is not considered as useful due to the inability of the technique to evaluate the exterior contour of the uterus and distinguish between a bicornuate and septate uterus.

It is also feasible that women with septate uteri and other Müllerian defects are at a higher risk of sustaining endometrial damage after blind D&C due to their atypical anatomy, particularly if the doctor performing the surgery was unaware of it.

A bicornuate uterus is sometimes confused with a septate uterus as in each situation the cavity is partitioned, however, in the former case the uterine body is cranially doubled (two uterine horns) while in the latter a single uterine body is present.