While the majority of studies made by comparing the radical prostatectomy: robot X laparoscopic X open, show a slight advantage in the first two in regard intraoperative complications, especially bleeding, and post operative complications as the speed of recovery of continence and sexual potency. There is a significant bias in these studies, which is that the surgical technique used in each procedure differs significantly from minimally invasive and open surgical techniques. The evolution of minimally invasive prostate surgery was based on an entirely different anatomical benchmark of that described by Patrick Walsh for open radical prostatectomy.