Outcomes of the anterior approach versus posterior sacrospinous ligament fixation for pelvic organ prolapse

Introduction and hypothesis This study aimed to compare anterior sacrospinous ligament fixation (SSLF) with the standard posterior SSLF concerning complications and outcomes in patients with apical compartment pelvic organ prolapse (POP). Methods This is an observational descriptive study using prospective data collected from two referral urogynecological centers. The study cohort represents all 135 women in our prospective study who underwent anterior approach bilateral anterior or unilateral posterior meshless SSLF from January 2018 to December 2020 using the PFDI-20 questionnaire and the POP quantification (POP-Q) system pre- and postoperatively. The objective success rate was assessed by the number of POP recurrence cases and total vaginal length (TVL) postoperatively. Patients were followed up for at least 6 months (range, 6 to 18 months). Data were analyzed using SPSS version 21. P < 0.05 was considered statistically significant. Results Sixty-seven (49.6%) patients underwent posterior SSLF, and 68 (50.4%) underwent anterior SSLF. The mean age of patients was 58.2 +/- 9.7 and 64.9 +/- 11.6, respectively (P < 0.001). Most patients who underwent the posterior approach had stage III apical prolapse (74.6%), while 65.5% of those who underwent anterior SSLF had stage II apical prolapse (P < 0.001). Following the treatment, no significant difference was detected between these two vaginal approaches in terms of women's satisfaction rate (P > 0.05). One case of postoperative recurrence was found in the posterior group, which ultimately led to surgical retreatment. There were no major intra- or postoperative complications in the groups. Postoperative TVL was higher in the anterior SSLF group (P < 0.001). The postoperative POPDI-6, CRADI-8, UDI-6, and PFDI-20 decreased significantly compared to preoperative status in both groups (P < 0.001). Conclusion It appears that the anterior SSLF approach can be regarded as effective as the posterior approach in the management of apical POP. Therefore, the proper surgical technique can be chosen according to the surgeon's expertise and other compartment's prolapse status.