M.O. Kleinman. A case of a vaginal septum that served as an obstacle during labor. (Protocol of the meeting of the Obstetric and Gynecological Society in Kiev, book 7, 1894, p. 67)

Primipara 19 years old. Legs are presented (at the exit). When extracting by the leg, it turned out that the fleshy crossbeam, going from the anterior vaginal wall to the posterior one, fell into the gluteofemoral fold of the fetus and prevented the extraction of the trunk.