Biomaterial Database

Pelvimetry in breech and cephalic presentation. 1976

S Laurin, and V Hegedüs, and S Zurbriggen

Pelvic measurements in a group of 115 women delivering in breech presentation were compared with those in a group of 100 delivering in cephalic presentation. The average pelvic measurements were all a few mm larger in the breech cases and the average sum of the outlet diameters was significantly larger. Pelvic disproportion was not more common in breech presentation and no support was found for the theory that large pelvic measurements predispose to breech presentation. The small differences found are attributed to the moulding of the pelvis occurring during parturition.

UI	MeSH Term	Description	Entries
D007746	Labor Presentation	The position or orientation of the FETUS at near term or during OBSTETRIC LABOR, determined by its relation to the SPINE of the mother and the birth canal. The normal position is a vertical, cephalic presentation with the fetal vertex flexed on the NECK.	Fetal Presentation,Presentation, Fetal,Fetal Malpresentation,Fetal Malpresentations,Malpresentation, Fetal,Presentation, Labor
D010387	Pelvimetry	Measurement of the dimensions and capacity of the pelvis. It includes cephalopelvimetry (measurement of fetal head size in relation to maternal pelvic capacity), a prognostic guide to the management of LABOR, OBSTETRIC associated with disproportion.	Cephalopelvic Proportion,Cephalopelvimetry,Cephalopelvic Proportions,Cephalopelvimetries,Pelvimetries,Proportion, Cephalopelvic,Proportions, Cephalopelvic
D011247	Pregnancy	The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH.	Gestation,Pregnancies
D001946	Breech Presentation	A malpresentation of the FETUS at near term or during OBSTETRIC LABOR with the fetal cephalic pole in the fundus of the UTERUS. There are three types of breech: the complete breech with flexed hips and knees; the incomplete breech with one or both hips partially or fully extended; the frank breech with flexed hips and extended knees.	Fetal Presentation, Breech,Labor Presentation, Breech,Presentation, Breech,Complete Breech,Frank Breech Presentation,Incomplete Breech,Breech Fetal Presentation,Breech Labor Presentation,Breech Presentation, Frank,Breech, Complete,Breech, Incomplete,Presentation, Breech Fetal,Presentation, Breech Labor,Presentation, Frank Breech
D005260	Female		Females
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man