For those who can't go on to iPlayer, and I quote
"Frequent flyer junkie with Ehlers danlos syndrome deliberately dislocates his shoulder then demands morphine" Other doctor rather dramatically puts his shoulder in, quips something about 'how Mick Jagger so eloquently puts it,... you can't always get what you want' and as the guy screams in pain she says "won't be doing that again".
It wasn't even part of the main storyline, it didn't move the script forward. It was a simple throwaway scene to show the new doctor asserting her dominance. Could have been done in a million and one ways. but they chose this.
HEDS, Autonomic Dysfunction, POTS, ME, Fibromyalgia, IBS, Icepick Headaches, Migraineous arm, Blepharitis and a cuddly toy.