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Introduction: The Victo^® AUS is indicated to treat male Stress Urinary Incontinence(SUI), an adjustable device that can be adjusted through the pump. During implantation the PRB is prefilled with 13ml NaCl.9% and activated 4-6w postop by additional 4ml. This AUS is supposed to be implanted intraperitoneally to minimize risks due to a possible fibrotic capsule until activation. However, an alternative PRB placement might be the extraperitoneal Retzius space (Rs). This retrospective study evaluates the safety and effectiveness of Rs-PRB placement, focusing on early complications.

Methods: Between 2017-23, 30 male patients with SUI, underwent AUS implantation with Rs-PRB placement. 27/30 patients had a previous radical prostatectomy; 4 additional had radiation (1-6y prior). The remaining patients had a TURP caused the SUI. Files were evaluated for complications: urethral obstruction, erosion and implant malfunction. During activation, patients were monitored for device functionality: filling ease and concerns or any other issues. Primary endpoints were safety and complication incidence. The current postop follow-up is 6-60m (mean 17m).

Results: The study group (n=30, aged mean 67y (57-71)) successfully underwent AUS implantation. Postop, prior to activation, no cases of urethral obstruction or erosion were observed, indicating no adverse effects from PRB positioning. Following activation, all patients achieved significant improvement in continence without difficulties in PRB filling, malfunction or inability to regulate the system’s liquid. No issues of urethral erosion occurred in the early post-activation period.

Conclusion: Retzius placement of the PRB in the Victo^® AUS appears to be a safe and effective alternative to standard intraperitoneal positioning, with no complications