Should a website that keeps track of 'Breadcrumbs' need to provide a back button, or similar means of returning to the parent page on each 'subpage'?
To give a visual example:
Here is my main page
Navigate to a subpage
In the the above page, should the "Change Username" page provide a back button to "Account Information"? I have played around with designs of a back button and have not found any that jived with the layout. They all look very redundant. But that can always be worked out. At the same time to leave the user with just a breadcrumb to navigate back to "Account Information" also seemed a bit weak.
As an alternative to the 'Back Button' scenario I'm also proposing implementing a permanent link to the index page to make it more visible to the user and allow them to return to it from the submenu and not the breadcrumbs. But I'm not sure what to call it - "Index", "View <subsection>", "Home" all seem odd to me.
Now in this scenario, the 'index' page would be what is navigated to when the user clicks on the "Account Information" breadcrumb, so they will never be able to return to that level.
So to summarize:
Is it ok to have Breadcrumbs be the main form of returning to a parent page? and if not: should the index page be made visible or a back button implemented?