A superficial peritoneal window will be made over the right part of the sacral promontory and extended caudally over the right outer border of the mesorectum down to the right side of the pouch of Douglas. In females, the vagina will be retracted anteriorly and a careful dissection of the rectovaginal septum will be performed down to the pelvic floor. A strip of polypropylene (3×20 cm) mesh will be introduced and sutured as distally as possible on the anterior rectal wall/ perineal body with three, interrupted nonabsorbable sutures.The posterior wall of the vagina will be fixed to the mesh using absorbable sutures. The mesh is then secured tension-free to the sacral promontory using three absorbable sutures. The mesh will be peritonealized by suturing the free edges of the previously divided peritoneum over the mesh to provide additional ventral elevation of the enterocele and avoid small bowel adhesions to the mesh.

Mobilization of the mesorectum posteriorly from the sacral promontory to the pelvic floor. Lateral stalks will not be divided. Bowel resection and circumferential division of the peritoneum will not be done in this study. A T-shaped polypropylene mesh will be placed with the vertical "leg" laying flush with the anterior surface of the sacrum, and secured to the promontory and sacrum with three absorbable sutures. The mesh "wings" will be sutured to the lateral sides of the rectum/mesorectum with two absorbable sutures on each side. The visceral peritoneum will be left open.

fixation of the rectum anteriorly using laparosopy and polypropylene mesh

The duration of the procedure will be registered in minutes.

Blood loss will be measured in milliliters