Why is the foreskin so valuable?
Several of the techniques used in hypospadias repair rely on flaps or grafts prepared from the foreskin — the onlay island flap, graft-supported plate widening, and a protective interposition layer chief among them.
- This tissue is thin, flexible and well-vascularized, and it tolerates a moist environment well. Once it is removed there is no equivalent tissue to replace it with; the alternative, oral mucosa, means a separate surgical site and an additional procedure.

