[The importance of x-ray pelvimetry for the prognosis of pelvic dystocia].

The frequency of roentgenological pelvimetry at the Research Institute of Obstetric and Gynecology during 1988 is 4.79%. Thirty-five pelvimetries out of 276 (12.68%) were urgent, but the remaining 241 (87.32%) were planned. Pelvimetries showed normal measurements in 113 of pregnant women (40.94%), but there was shortening in one or more diameters of the single planes of the pelvis in 163 women (59.06%). The measures of the diameters of the pelvic cavity were shortened most frequently, more rarely at the pelvic inlet and most rarely at the pelvic outlet. Changes in the bony pelvis were indicated after secondary traumatic deformity of the pelvis. The role of roentgenological pelvimetry in taking decision for delivery of breech presentation of the fetus was analyzed. It is pointed out that the roentgenological pelvimetry is the single, easy, convenient, safe and available method for determination of pelvic diameters, respectively for prognosis of pelvic dystocia.