Changes

}}</ref> The membrane, which is called the <i>balanopreputial lamina</i>, is common to both parts, so retraction of the boy's foreskin is prevented by nature. There is good reason for this, since the [[foreskin]] provides protection to the [[penis]] while in the diaper, which usually contains feces, urine, and ammonia. <ref>{{REFjournal |last=Brennemann |init=J |author-link= |url=https://ia800607.us.archive.org/view_archive.php?archive=/8/items/crossref-pre-1923-scholarly-works/10.1001%252Farchpedi.1915.04110040066007.zip&file=10.1001%252Farchpedi.1921.01910310043003.pdf |title=The Ulcerated Meatus in the Circumcised Child |journal=Am J Dis Child |date=1921 |volume=21 |issue= |pages=38-47 |format=PDF |accessdate=2025-12-04}}</ref> Boys with a protective foreskin do not develop [[meatal stenosis]].