Does ventral mesh rectopexy at the time of sacrocolpopexy prevent subsequent posterior wall prolapse?

Objective: To determine whether ventral mesh rectopexy at the time of sacrocolpopexy reduces the rate of future posterior wall prolapse. Material and Methods: This was a retrospective cohort study of women with pelvic organ prolapse (POP) who underwent sacrocolpopexy or without concomitant rectopexy at a single community hospital from December 1, 2015 to June 30, 2019. Preoperative pelvic organ prolapse quantification (POP-Q) and urodynamic testing was used in evaluation of POP. Patients were followed for 12-weeks postoperatively and a 12-week postoperative POP-Q assessment was completed. The incidence of new or recurrent posterior prolapse was compared between cohorts. Results: Women with POP (n=150) were recruited, of whom 41 (27.3%) underwent sacrocolpopexy while the remainder (n=109, 72.7%) did not receive rectopexy. Patient demographics did not statistically differ between cohorts. Post-surgical posterior wall prolapse was reduced in the robotic assisted sacrocolpopexy (RASC) + rectopexy group compared to RASC alone, however this did not reach statistical significance. There were no patients who underwent concomitant rectopexy and RASC that needed recurrent posterior wall prolapse surgery, compared to eight-percent of patients that underwent isolated RASC procedures. Conclusion: Our findings suggest a reduction in the need for subsequent posterior wall surgery when rectopexy is performed at the time of sacrocolpopexy. In our study, no future surgery for POP was found in the concomitant sacrocolpopexy and rectopexy group, while a small proportion of the RASC only group required future POP surgery. Our study, however, was underpowered to elucidate a statistically significant difference between groups. Future larger studies are needed to confirm a reduced risk of posterior wall prolapse in patients who undergo concomitant RASC and rectopexy.