Modified posterior intravaginal slingplasty: does the additional bilateral tape attachment to the sacrospinous ligament improve the results?

High failure and recurrent prolapse remains an important issue for pelvic organ prolapse (POP) surgery. The posterior intravaginal slingplasty (PIVS) is a minimally invasive, transperineal technique providing level I support, by creating neo-sacrouterine ligaments using a mesh. In order to reduce the POP recurrence rate, achieve a safer apical support and thereby better functional outcomes, we attached PIVS tape to the sacrospinous ligament bilaterally and compared the anatomical and functional outcomes for our modified technique versus the original PIVS. We evaluated 368 patients, with a symptomatic pelvic organ prolapse in various grades, who had undergone a total pelvic floor reconstruction. Seventy-seven of 368 (21%) patients underwent the original PIVS, 291 (79%) patients were treated by the modified PIVS. When necessary, the following procedures were added: anterior transobturator mesh, posterior wall repair, perineal body repair and suburethral transobturator sling. All had follow-up checks for at least one year. The primary outcome was an objective cure, defined as grade 0 or grade 1 according to Baden-Walker. Secondary outcomes were prolapse recurrence, symptoms, visual analogue scales for satisfaction, quality of life, recommendation, reoperation rates and presence of complications. The total reconstructions we made, using each technique, were successful. We achieved an apical success rate of 97 to 96%, on average, with the modified and original IVS respectively. We found a statistically significant improvement in urge incontinence and frequency symptoms than the original PIVS with our modified technique. Modified PIVS in combination with concomitant procedures generates high anatomical and functional cure rates with low complications and recurrences.