Do you know, Intracytoplasmic sperm injection is to fertilize a single ovum by injecting a single sperm into it.

It has nearly replaced years old basic technique of assembling few ova and limited number of sperms in a Petri-dish to be fertilized by themselves.

A force fully introduced sperm, which is randomly selected, particularly in a subfertile male, may lead to higher chances of pregnancy but weak fetus physically as well as mentally. It is possible. And so prefer IVF TO ICSI!