After seeing her crazy aerial show on the VMAs last Sunday, it's easy to understand how Pink could injure her shoulder. After initially thinking she had broken her collarbone, Pink learned she had separated her shoulder. A painful injury indeed. In fact she tweeted that "it kinda feels like 50 angry invisible demon fairies are stabbing me."
To learn what body part actually separated from what and how she did it,
A shoulder separation is not technically an injury to the actual shoulder joint (the ball and socket) but a weakening or tear of the ligaments that attach the top of the shoulder blade to the collarbone. These ligaments help stabilize the shoulder through the wide range of motion this joint has.
Although it is assumed that Pink injured herself on the trapeze, she twittered to her pal and sometimes punching bag Jason Ellis this message when he asked what happened:
Proving she is a super toughie, Pink will continue her tour in spite of her injury — minus the trapeze tricks.