IschioPubic osteotomy, A simple and effective technique for pelvic ring closure in repair of classic exstrophy bladder

Abstract

Aim: The aim of this study is to report the technique and outcome of ischiopubic (IP) osteotomy for pelvic ring closure in classic exstrophy bladder. Methods: A total of 85 male classic exstrophies were selected based on trapezoid-shaped space between IP ramus on three-dimensional computed tomography pelvis. Using midline scroto-perineal approach, after bladder plate mobilization and radical corporal detachment; the pelvic surface of superior pubic ramus (SPR) was exposed. Above the obturator canal, H-shaped incision was made on periosteum of the SPR. The horizontal line of H was placed above the obturator canal. Rectangular periosteal flaps above and below the horizontal line was raised. In the subperiosteal plane, curved hemostats encircled the SPR that were divided using a bone drill. On the medial aspect of ischial tuberosity, a notch was created as hinge using a bone drill. Forks of bone holding forceps hooked the pubic bone and tightened for its midline approximation, lengthening of the SPR and inward rotation of IP ramus. Linea alba and pubic bones were approximated with interrupted Polygalactin sutures. Results: Midline approximation of pubic bone and linea alba was possible in all. There was no injury to obturator nerve, vessels, or other structures . Conclusions: IP osteotomy is the safe and effective technique of pelvic ring closure in patients with specific pelvic configuration.

Keywords

• Classic exstrophy bladder
• ischio-pubic osteotomy
• Pelvic ring closure