This article is from the ER FAQ, by Rose Cooper firstname.lastname@example.org with numerous contributions by others.
The source of Kerry`s leg injury has never been mentioned on
the show, despite some people thinking that they may remember having
Recently, Laura Innes stated in an interview that she and
the writers have come up with a specific origin for Kerry`s
disability, but it won`t be worked into the show until they have
an appropriate story to put it in. [Though I have no idea why they don't
just find Lucy...I mean, Baby Suzie's Elephants.]