Sterility related to ovarian dystrophy is currently treated by means of standard inductors of ovulation such as Clomid and HMG. In case of failure, patients are recommended in vitro fertilization. In our study of 30 cases of ovarian dystrophy, 9 pregnancies occurred after in vitro fertilization. Slow injections of purified FSH appear to produce similar results but the method is still under evaluation. Our results suggest that after say, two years of failure with classical methods in patients with a long history of sterility, in vitro fertilization may be expected to give good results.