Causes of male infertility including low sperm count and motility and abnormal sperm morphology can make it difficult for sperm to successfully travel through the fallopian tube to uterus. Poor quality sperm and sperm antibodies are other possible reasons that reduce sperm ability to penetrate the egg (oocyte). Even with in vitro fertilization the chances of successful fertilization are low. Intra-cytoplasmic sperm injection can be a solution to this problem.
Intra-cytoplasmic sperm injection is an assisted reproductive technology (ART) used to treat sperm-related infertility problems. Under magnification of 400 powers, the embryologist will select physically normal and healthy sperm by specialized micromanipulation tools and equipment and inverted microscopes. Then a specially designed needle picks up the individual sperm and carefully injects it into the egg. The fertilized egg, like in vitro fertilization, also needs three to five days before it can be implanted into the uterus and about 70-90% of eggs injected using ICSI become fertilized. If male infertility problems are an issue, ICSI can help lead to a successful pregnancy.