Asthenopermia, or asthenozoospermia, is the term used when the percentage of mobile sperm is lower than average. Complete asthenozoospermia, meaning that all sperm cells in a sample are not moving, occurs in about 1 in 5000 men.
Asthenozoospermia results in infertility, as the sperm are unable to swim and reach the egg. This can be overcome using IVF-ICSI techniques.
Non-obstructive azoospermia is diagnosed in cases where no sperm cells can be found in the ejaculate, yet no evidence of a blockage can be seen.
Spermatogenesis, the creation of mature sperm cells, takes place in the male testis from the start of puberty and continuing throughout life. Stem cells are
Testicular torsion is a condition occurring in about 1 in 4000 males under 25, where one testicle will rotate within the sac. The rotation twists
Maturation arrest is defined as germ cells that fail to complete maturation to sperm cells. Limited data exist to characterize men with maturation arrest. Maturation
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