Dyspareunia and pelvic pain: comparison of mid-urethral sling methods 10 years after insertion

Introduction and hypothesis
The mid-urethral sling (MUS) has been used for more than 30 years to cure stress urinary incontinence. The objective of this study was to assess whether surgical technique affects the outcome after more than ten years, regarding dyspareunia and pelvic pain.
Methods
In this longitudinal cohort study we used the Swedish National Quality Register of Gynecological Surgery to identify women who underwent MUS surgery in the period 2006–2010. Out of 4348 eligible women, 2555 (59%) responded to the questionnaire sent out in 2020–2021. The two main surgical techniques, the retropubic and the obturatoric approach, were represented by 1562 and 859 women respectively. The Urogenital Distress Inventory-6 (UDI-6) and the Pelvic Organ Prolapse/Urinary Incontinence Sexual Questionnaire (PISQ-12), as well as general questions concerning the MUS surgery, were sent out to the study population. Dyspareunia and pelvic pain were defined as primary outcomes. Secondary outcomes included PISQ-12, general satisfaction, and self-reported problems due to sling insertion.
Results
A total of 2421 women were included in the analysis. Among these, 71% responded to questions regarding dyspareunia and 77% responded to questions regarding pelvic pain. In a multivariate logistic regression analysis of the primary outcomes, we found no difference in reported dyspareunia (15% vs 17%, odds ratio (OR) 1.1, 95% CI 0.8–1.5) or in reported pelvic pain (17% vs 18%, OR 1.0, 95% CI 0.8–1.3) between the retropubic and obturatoric techniques among study responders.
Conclusion
Dyspareunia and pelvic pain 10–14 years after insertion of a MUS do not differ with respect to surgical technique.