Pelvic roentgenometry of the third kind: age- and sex-related measurement results in adulthood

Normal values in adults for the hip joint (3.5-6 mm), the sacro-iliac joint (1-3.5 mm) and the symphysis (up to 7.5 mm) were obtained by measurements of a.p. views of the pelvis. Contrary to the literature there was no sex difference as regards the CCD. The roentgenometric features of the female and male pelvis depend on the pubic angle, the transverse diameter of the pelvic inlet and the sulcus paraglenoidalis. In females there are age-related changes consisting of a reduction of the pubic angle, increasing height of the symphysis components of the pubis and an increase in the transverse diameter of the pelvis. In the male, age changes consist of an increase of the symphysis component of the pubis and the transverse diameter of the pelvis.