What sort of injury?

Sideswipe had this item:

Bureaucracy in action: This message was distributed to Waitemata DHB staff: “Following an injury to a staff member earlier this year it has been recommended that an improved type of toilet roll dispenser be introduced. Over the next few weeks a contract carpenter will be replacing toilet roll dispensers throughout the organisation commencing at Waitakere Hospital. We apologise for any inconvenience caused while this work is undertaken.”

Okay, so what sort of injury do you suffer in a toilet, and how is it stopped by having a different type of toilet roll dispenser?

One has to really wonder if the existing toilet roll dispensers are so dangerous they all need replacing, or was the accident just freakish?