Pelvimetry is an important phase of modern obstetrics, yet the subject remains somewhat confusing and lacking in precision. The external pelvic measurements are at best inadequate as a true index of pelvic types. The internal measurements, however, offer certain accurate data covering the pelvic inlet, the contour, the sweep of the subpubic arch and the outlet. X-ray examination was originally employed for the purpose of attesting fetal presence, multiple fetus and fetal deformities. During the last fifteen years, as a result of the investigations of Thorns, Chambers, Jarcho, Spalding, Ball, Hirsch and others, several methods of x-ray pelvimetry have been introduced. These investigations culminated in the classic contribution of Caldwell and Moloy,1 who have provided, with the use of roentgen rays, a simple yet practical and accurate classification of the various pelvic types and have augmented our knowledge of the mechanism of labor.
This study covers a series of
RAPPAPORT EM, SCADRON SJ. PELVIRADIOGRAPHY AND CLINICAL PELVIMETRY: COMPARATIVE VALUES IN THE PROGNOSIS OF THE OUTCOME OF LABOR. JAMA. 1939;112(24):2492–2497. doi:10.1001/jama.1939.02800240008003
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