Some studies have shown that endometrial scratching can improve the chances of implantation and the further development of pregnancy. Scratching involves a slight incision in the uterine lining; it is carried out during the luteal phase before a planned embryo transfer.
This small injury to the uterine lining activates the immune system to release growth hormones and cytokines. These play a major part in the interaction between the uterine lining and the developed embryo during implantation. However, the precise mechanism is not yet known. The procedure is not usually painful and can be performed without anaesthesia. In principle, endometrial scratching is possible here in Linz before every embryo transfer and is recommended for patients with implantation failure.