Board Thread:Episode Discussions/@comment-1181222-20170906103845/@comment-25122992-20170909085556

The7thChief wrote: Why did Sakura go to Karin instead of Tsunade to give birth to sarada Actually, it was explained by Karin in the manga, but anime dropped off some part of this explanation. When Sakura was pregnant, she followed Sasuke during his journeyes, and thus her childbirth happened in one of Oro's hideouts, with Karin being the person who delivered the child. So, Tsunade couldn't help in any way, since Sakura was away from Konoha back then. This is the reason why there's no records of Sarada's birth in Konoha hospitals - she simply wasn't born in Konoha.