n Juntendo University Urology Department, we introduced PBL (problem based learning) course using a three-dimensional printed pelvic bone. The medical students create and learn three-dimensional anatomy in the retroperitoneal space then they following the surgical steps of radical robotic prostatectomy lusing the 3D model which they made. After finishing this PBL course, we have realized that this method may have impact for understanding of anatomy and understanding surgical procedure.