Kirsty was once kicked in the ribs by someone whilst in her sleeping bag. She went to A&E. (AUDIO: Hostile Environment [+]Loading...["Hostile Environment (audio story)"])
Kaleds including Davros had more widely spaced ribcages than humans. (TV: The Stolen Earth [+]Loading...["The Stolen Earth (TV story)"]) In his youth, Davros saw the ribs of some dead Kaleds melt and look as if they were tentacles due to mutation. (AUDIO: Innocence [+]Loading...["Innocence (audio story)"])