3-DIMENSIONAL ANATOMY OF THE PELVIS IN BLADDER EXSTROPHY - DESCRIPTION OF BONE PATHOLOGY BY USING 3-DIMENSIONAL COMPUTED-TOMOGRAPHY AND ITSCLINICAL RELEVANCE

The alterations in pelvic structure that occur in bladder exstrophy we re evaluated in six children (one girl and five boys) by using three-d imensional computed tomography (3D-CT). The length and angle of anteri or and posterior segments and the slanting angle of iliac wings were m easured. 3D-CT scans of the pelvis of four patients with a normal pelv is were obtained to serve as controls. Both anterior and posterior seg ments were abnormally rotated externally in patients with bladder exst rophy. Whereas the length of the posterior segment is normal, the leng th of the anterior segment is significantly shorter, and the iliac win gs projected more inward than those in the age-matched control subject s.