[Male infertility--diagnosis and treatment]

Infertility is often due to subfertility in both partners. Investigations of the male partner includes history taking, physical examination (possibly supplemented with ultrasonography), and semen analysis. In addition to the sperm count, and sperm morphology and motility, numerous other seminal parameters are of interest. In particular, the acrosome reaction test and testing for seminal round cell subpopulations are now widely used. In the event of anomalies, causal treatment is preferable to symptomatic therapy. Significant future progress in the management of male infertility is predicated upon an improved understanding of the mechanisms involved in testicular differentiation and spermatogenesis.