Synthetic Versus Autologous Sling For Stress Incontinence

Inclusion Criteria: * Adult females at birth (female anatomy, any gender) * Aged 18 years or older (19 years or older for BC participants) * Have stress predominant urinary incontinence (spUI) eligible for both types of surgery (tension-free vaginal tape and autologous fascia sling) * Exhausted conservative management options for UI (Kegel's exercises, physiotherapy, pessary) * Completed childbearing * Able to follow up with clinic visits for up to five years after surgery Exclusion Criteria: * Clinical Frailty Score of 6 or more, as moderate frailty is likely associated with excessive postoperative deterioration * Concurrent pelvic surgery * Neurogenic bladder * Previous UI surgery * Previous pelvic radiation * Previous mesh exposure * Presence of pelvic pain for more than three months in the last five years * Likely unable to follow up * Immunocompromised individuals receiving immunosuppressive medications for at least 3 months * Chronic systemic steroid use for at least 3 months for autoimmune diseases * Unable to stop smoking for at least 3 months prior to surgery and at high risk of restart smoking post-operatively