Changes

}}</ref> 1) The inner surface of the foreskin is fused with the underlying [[glans penis]] by a common [[synechia]] to prevent retraction. Forcible retraction will tear the synechia so should be avoided. 2) Nature provides a second method is provided to prevent retraction by making the tip of the immature foreskin too narrow to pass over the [[glans penis]]. The tip of the foreskin normally widens to render the foreskin retractable by age 18, but a few persist until later. Non-retractable foreskin in adults is a normal variant. The first person to retract a boy's foreskin should be the boy himself.<ref name="Wright1994">{{REFjournal