If the percentage of normal sperm is 0, it means that the man has severe teratozoospermia and the only possible way for him to conceive would be by using IVF/ICSI.
Learn more: What Is ICSI or Intracytoplasmic Sperm Injection?
Read the full article on: What is teratozoospermia? Its causes, diagnosis and treatment ( 101).

Zaira Salvador
B.Sc., M.Sc.
Bachelor's Degree in Biotechnology from the Technical University of Valencia (UPV). Biotechnology Degree from the National University of Ireland en Galway (NUIG) and embryologist specializing in Assisted Reproduction, with a Master's Degree in Biotechnology of Human Reproduction from the University of Valencia (UV) and the Valencian Infertility Institute (IVI)
License: 3185-CV