Intra-perineal insemination is a technique used in assisted reproduction. The principle is to stimulate the ovaries, to obtain the partner's sperm and to prepare it by similar techniques to those used in in-vitro fertilization so that the sperm can be placed near the ovaries in the Pouch of Douglas by a direct puncture of the posterior vaginal fornix without using anaesthesia. The woman's pelvis has to be absolutely normal. This technique is useful in cases of unexplained sterility, cervical sterility and inadequate sperm function.