It is considered the mother's pelvis, as the most important factor of three (mother's pelvis, fetal presentation, uterine contractions), which govern the evolution of the phenomena of birth; hence the radiographic Pelvimetry constitute a clinical assistant value, but is not able to clarify all clinical questions, or tell us exactly the evolution of labor. The major pelvic diameters are studied: conjugated vera, transverse at the superior strait; bi-sciatic and posterior sagittal excavation and bi-sciatic on the lower narrow, being secondly other top narrow diameters used to determine the shape and position of the pelvis in the Caldwell-Moloy classification. In hundred pelvis studied, it has been found that the most frequent vera conjugate (34.5%) is between 11 and 11.5 cm. and bi-sciatic 10 to 10.5 cm. in 41.5%. In the superior strait, 13.5% of the pelvis had vera conjugate between 8.5 t...

It is considered the mother's pelvis, as the most important factor of three (mother's pelvis, fetal presentation, uterine contractions), which govern the evolution of the phenomena of birth; hence the radiographic Pelvimetry constitute a clinical assistant value, but is not able to clarify all clinical questions, or tell us exactly the evolution of labor. The major pelvic diameters are studied: conjugated vera, transverse at the superior strait; bi-sciatic and posterior sagittal excavation and bi-sciatic on the lower narrow, being secondly other top narrow diameters used to determine the shape and position of the pelvis in the Caldwell-Moloy classification. In hundred pelvis studied, it has been found that the most frequent vera conjugate (34.5%) is between 11 and 11.5 cm. and bi-sciatic 10 to 10.5 cm. in 41.5%. In the superior strait, 13.5% of the pelvis had vera conjugate between 8.5 t...