Morphology of the spermatozoa is one of the major criteria in severe m
ale subfertility. We report on a case of severe Oligoasthenoteratozoos
permia in which a triplet pregnancy could be achieved after intracytop
lasmic sperm injection (ICSI). After treatment with GnRH-analogues/HMG
/HCG seven oocytes of metaphase II could be retrived and injected. Thr
ee of them fertilised and were transferred as four-cell stage embryos
after two days. Seven weeks later an intact triplet pregnancy could be
detected by ultrasonography. The severe sperm defects in this case we
re evaluated with the technique of electron microscopy. Ultramorpholog
y of spermatozoa appears to have an important predictive value for fer
tilisation and pregnancy in classical IVF. Its value for the assisted
procreation techniques such as ICSI remains to be investigated.