His ribs caved in under my heel.

Its ribs caved in with a crunch and a sigh.

Blood sprayed over the deck and Blade's legs as Gazes' ribs caved in.

He heard the answering crack as ribs caved in beneath the blow.

As the Mole's left fist struck G-8's chest, G-8 felt as though his ribs were caving in.

"I got my ribs caved in for a flightless bird?"

Unless you wish to simply get into a chariot and die on the track from loss of blood, or when your crushed ribs cave inward and stop your breathing?

A moment later, his ribs caved in, and his body began to distort.

Get caught between a crate and a wall and you'll get your ribs caved in, just like on Earth.

Well, nobody was in a hurry to get his ribs caved in, so that was that.