ICSI can be performed to help this couple have a successful embryo formation in the A In this one sperm is directly injected into mature egg prior to intrauterine transfer of the feilized eggs ICSI should be offered if the semen analysis shows <5 million motile sperm, | or absent motility of sperms. Many abnormal sperms Previous failed IVF Unexplained infeility IVF as well as other A procedures require at least 1,00,000 sperms per oocyte to have good chances of feilisation and with TESA, the number of sperms obtained is much less, good enough for ICSI (Intracytoplasmic Sperm Injection) that requires a single morphologically normal sperm. Hence sperms obtained from TESA are used for ICSI is the single best answer here.