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Article
December 17, 1927

A STUDY OF LABOR IN CONTRACTED PELVES

Author Affiliations

SAN FRANCISCO
From the Obstetrical Department, University of California Medical School.

JAMA. 1927;89(25):2088-2093. doi:10.1001/jama.1927.02690250010004
Abstract

The method of trial and error is a most effective agent for the advancement of all science, and orderly knowledge and obstetrics progress by experiment and accurate observations. Mature and safe judgment can come only as a crystallization of personal experience.

A thoughtful study of the problems of maternal and fetal mortality is of tremendous significance, and factors that may contribute to the death rate of mother or child are of vital importance. With this purpose in mind, I have made an analysis of the effect of pelvic contractions on the outcome of labor in 6,500 cases delivered in the obstetric department of the University of California Hospital.

CLASSIFICATION OF CONTRACTED PELVES  It is apparent that any grouping of types of pelves must be unsatisfactory, for the size of the pelvis is only one of the components relating to the mechanism of labor. The actual spacial relationship of the bony

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