Intracytoplasmic Sperm Injection (ICSI) treatment or ICSI is an assisted reproductive technique that is used in cases of male infertility, often performed along with IVF. Some even consider it to be a specialized form of IVF.
In IVF, the egg and the sperm are fertilized outside the womb and inserted into the uterus. However, ICSI can be recommended to improve the chances of fertilization, especially when the sperm count is low. ICSI treatment involves the use of a very fine needle to inject a single live sperm directly into the center of the egg.