Does pelvic prolapse cause incontinence?

Partly: It's associated and caused by the same factors that cause most stress incontinence but stress incontinence can occur without prolapse.

Yes and No: Pelvic prolapse and urinary incontinence are two distinct entities that often occur together. In some circumstances pelvic prolapse reduces urinary incontinence due to increased urethral pressures. Surgeons often discuss issues of future incontinence when treating prolapse. A complete pelvic floor evaluation is important when planning surgery to avoid these issues.