Just a mild sprain and it actually wasn't the stairs' fault. I tripped over my own feet and actually fell onto the stairs. It's a wonder I didn't fall all the way down them and break my neck. I didn't roll or slide, just fell onto them - landed with my feet on top stair, my shins caught the lip and my knees hit the second stair - and somehow I ended up on my butt.

Thank you. I love old pin-ups and this one is appropriately called 'The Reporter' :)

It was very painful. The stairs are solid marble.

And thanks! I'm pretty fond of it too :)