The purpose of this study is to investigate a new technique: Close Rectal Dissection (CRD) as restorative surgery for Ulcerative Colitis patients: the Close Rectal Ileo Pouch Anal Anastomosis (CR-IPAA). Clinical outcome and quality of life will be compared to the conventional Ileo Pouch Anal Anastomosis (C-IPAA) and the Ileo Neo Rectal Anastomosis (INRA).