It is surgery including silicone prosthesis in the buttocks, in order to give a better contour and increase volume. Note that the silicone should always be introduced as a prosthesis and never as injections of silicone gel , which is a totally contraindicated and procedure done by people who have no medical or ethical criteria , since complications are short term and countless and very serious . The inclusion of silicone prosthesis in the buttocks is inter gluteal line and leaves a faint scar. The postoperative is not painful and the patient has to sit the next day after surgery . We must take special care with the surgical wound as to be in a damp and near the anal orifice could become contaminated and create a local infection site .