The influence of sperm motility and cryopreservation on the treatment outcome after intracytoplasmic sperm injection following testicular sperm extraction.

The use of cryopreserved testicular sperm does not negatively influence the ongoing pregnancy and live birth rate after TESE-ICSI. However, sperm motility seems to increase the pregnancy rate through its influence on embryo quality. Therefore, fresh TESE has no added value when there is still cryopreserved testicular sperm available. Motile sperm is preferred for injection, but the use of tail touch sperm results in an acceptable treatment outcome.