[Electron microscopy of spermatozoa. Indications and results]

Electron microscopy of spermatozoa is required in cases of important and persistent disorders of motility. Within the frame of fertility investigations, it can also prove useful in cases of in vitro fertilisation failures where structural defects of acrosome may be detected. Lastly subclinical seminal infections are diagnosed in more than 20% and account for a substantial number of acquired head anomalies and necrospermia.