Asthenozoospermia is a sperm disorder characterized by problems in sperm motility. The World Health Organization (WHO) establishes that a seminal sample must have at least 40% of motile spermatozoa and 32% of them must be progressively motile. Otherwise, the seminal sample will be diagnosed with asthenozoospermia.
Since in ICSI it is the specialist who introduces the sperm into the interior of the egg, it is not necessary for the egg to move. For this reason, ICSI is the way to perform in vitro fertilization in cases of severe motility.