Impact of Urethroplasty on Erectile Function: A Multicenter Analysis of the International Index of Erectile Function Score Changes Across Different Etiologies of Urethral Stricture

<b>Background/Objectives</b>: Urethral stricture disease, characterized by narrowing of the urethra due to scar tissue, affects urinary and sexual health. While urethroplasty is the standard treatment, its impact on erectile function is less understood. This study examines changes in International Index of Erectile Function (IIEF) scores post-urethroplasty across various stricture etiologies, identifies predictors of erectile function outcomes, and explores recovery trajectories following surgery. <b>Methods</b>: This multicenter retrospective study included 103 patients who underwent urethroplasty between 2017 and 2023. Preoperative and postoperative IIEF scores at 3 and 6 or 12 months were analyzed. Stricture etiologies included pelvic fracture urethral injury, transurethral resection, catheterization, idiopathic, and hypospadias. The Wilcoxon signed-rank test and multivariate regression models were used to assess changes in IIEF scores and identify significant predictors. <b>Results</b>: Preoperative erectile function and patient age were significant predictors of postoperative outcomes. Younger patients and those with higher baseline IIEF scores experienced better erectile function post-surgery. Long-term outcomes (6 to 12 months) were significantly worse for strictures involving both penile and bulbar regions. Multivariate analysis showed higher pre-surgery IIEF scores and younger age were associated with better outcomes both short-term (R² = 0.562) and long-term (R² = 0.507). Diabetes was associated with worse erectile function outcomes at 3 months post-surgery. <b>Conclusions</b>: Younger patients and those with higher baseline IIEF scores have better erectile function outcomes following urethroplasty. Complex strictures involving both penile and bulbar regions adversely affect long-term outcomes. Additionally, the presence of diabetes is correlated with diminished erectile function in the short-term postoperative period.