The bicuspid valve has no use, as it is a congenital disability. Aortic valves should have three leaflets. When a person has a bicuspid aortic valve, they will only have two leaflets. This defect develops early on during the baby when the development of their heart begins.
Bicuspid valve often runs its families, and it is the most common heart defect. Males are more likely to get this defect than females. It can be dangerous because it is not seen as effective in stopping blood from going back to the heart. Along with that, there is a risk of the aorta becoming enlarged.