[Micromanipulation of human gametes within the scope of assisted reproduction].

Poor function of spermatozoa accounts for half of all human infertility. Micromanipulation methods within the framework of in vitro fertilization treatment may enhance fertilization of the egg and may allow the establishment of an ongoing pregnancy in cases of severe male infertility. This review presents different methods of micromanipulation which are routinely applied in male factor infertility and for preimplantation diagnosis.