From Law wiki, the wiki for law research

Injury, oddly enough, to the person. Broken bones are a personal injury, but the concept is wide enough to encompass depression and anxiety (see psychiatric injury). Personal injury accounts for such a large volume of litigation that it can almost be seen as a branch of law in its own right -- it even has its own specialist law reports. However, the principles of personal injury are derived from the ordinary law of Negligence.