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Bilateral posterior iliac osteotomy as a preliminary stage in the surgical treatment of exstrophia vescicae.

Bilateral posterior iliac osteotomy as a preliminary stage in the surgical treatment of congenital extrophy of the bladder allows easier approximation of the soft tissues in front of the urethra and facilitates closure of the rectal muscles and fasciae, reducing or abolishing the need for using fascial strips and carrying out plastic procedures to close the skin.