title: The influence of the bony pelvis in persistent occiput posterior position.
abstract: Roentgenologic pelvimetry has been performed in 68 consecutive cases of occiput posterior position. The results point to an influence from a transverse narrowing of the pelvis or a tendency towards large dimensions. In many cases, however, no clear correlation to pelvic dimensions is found. A significant difference exists in the rate of obstetrical complications between nulliparous and parous women. The reasons for this and for the persistent OP position are discussed.
mesh_terms: D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007746:Labor Presentation; D010298:Parity; D010384:Pelvic Bones / Q000033:anatomy & histology* / Q000000981:diagnostic imaging; D010387:Pelvimetry; D011247:Pregnancy; D011859:Radiography