Change of Morphologic Pelvis According to Age in Korean Women : Radiologic Study

Song, Wu Chol; Shin, Hyun Joon; Sohn, Hyun Joon; Paik, Doo Jin; Koh, Ki Seok

Abstract

The morphological change of pelvis in obstetrical part is very important for the partruition and its analysis is also critical in anthropological part studying the morphological differences between male and female pelvises by age. The measurement of dry bones is currently used for analyzing the changes, but this method has some difficulties including in sampling the dry bones. To solve this problem and analyze the morphological changes of pelvis accurately, we used the X -ray photographic films showing whole pelvis, vertebrae, and femur. The whole pelvis and proximal femur's X -ray photographies were taken from 506 individuals who were over 20 - year old age, non -pregnant, and normal posture Korean females. And the several values from the photographies were measured for analysis including maximum pelvic breadth (MPB), sacral breadth (SB), transverse diameter of pelvic inlet (TD), distance between ischial spines (ISD), distance between femoral heads (IHD), and distance between greater trochanters of femur (ITD). The results revealed that the TD values were highly correlated to other pelvic items, but not to ages, suggesting that TD is not anatomically changed to the correlation of parturition times. Also, the IHD values were highly related to the ITD and TD values, but the ISD values had relatively low correlations with MPB and ITD values. Depending on ages, the MPB values were gradually increased, while the ITD values were gradually decreased, indicating that these morphological changes of pelvis by ages are reflecting an aging process.