Male factor is the reason for subfertility in 30 – 40% of the infertile couples.Defective semen in terms of sperm number, motility (movement) and shape (morphology is usually the cause.
- Oligospermia – Count less than 15 Million per ml.
- Asthenospermia – decrease in progressive motility
- Teratozoospermia – decrease in normal shaped sperms which often indicates a defective gene content that will not permit normal fertilization .4% of the sperms need to be of normal shape as per WHO norms.
- There could be a combination of above defects