Think your day isn't all rainbows and unicorns? Try having your prosthetic leg shattered by a gurney — a gurney piloted by Stephanie (Jerrika Hinton), no less! And that's just the start of Arizona's (Jessica Capshaw) troubles on the episode of Grey's Anatomy airing tonight — Season 10, Episode 15: "Throwing It All Away."

"She has a terrible, awful, no good, very bad day," the 37-year-old actress tells TV Guide. "The idea behind this episode was to put a button on explaining the leg. It's part of her, but it will be an unspoken part of it now. Now we just accept her for who she is. But it's very much about: What is it like to go through a really bad day when you have a prosthetic and what happens if something happens to the prosthetic? What do you do? How do you remain a surgeon? How do you remain in relationships?"

At least she's dealing with such a monumentally terrible day now as opposed to the weeks following her amputation. "Had she had this day a year ago, she would've been sitting in the bathroom floor in her own pee again," Jessica says. "It would've been enough to just flatten her. I think the point is that she has a very, very bad day and she's actually OK. It's just a bad day as opposed to being something that brings her to her knees."

And, by the way, Grey's creator Shonda Rhimes says that Jessica is "phenomenal" in this Arizona-centric hour of the show.

But if you found the whole accident a little laughable when you watched it in that sneak peek, you're not the only one. "The idea is that you're shocked and amazed that she's just gotten run over by a gurney, and I have to say that it is pretty funny," Jessica laughs. "You see the stunt double flip in the air and you're like, 'Seriously? A gurney did that to me?!'"

Source: TV Guide

Dan Clarendon is an assistant editor at Wetpaint Entertainment. Follow him on Twitter and Google+!