Anatomical basis of pelvic growth in bladder exstrophy.

Pelvic growth in bladder exstrophy was studied in 10 patients. Growth of their pelves in length as well as in width was similar to that found by Tanner. Meanwhile, the speed at which the diastasis of the pubic symphysis increases is variable. Before 5 years of age and during the end of growth it is fast, whereas it is slow between 5 and 10 years of age. There are no radiological abnormalities of hip joint orientation, and the acetabular angles are normal.