I am not aware of a diaper leading the sterilization of sperm.
If there is concern about the viability of the sperm, you may want to undertake a sperm analysis. It can test for the following traits:
* Measurement of semen volume and pH
* Microscopy for debris and agglutination
* Assessment of sperm concentration, motility, and morphology
* Sperm leukocyte count
* Search for immature germ cells.
If those tests are negative, you can consider more specialized sperm testing - looking for sperm antibodies, sperm cultures and semen biochemistry.
These options can be discussed with a urology referral.
Followup with your personal physician is essential.
This answer is not intended as and does not substitute for medical advice - the information presented is for patient education only. Please see your personal physician for further evaluation of your individual case.
Kevin, M.D.
Medical Weblog:
kevinmd_b