We compare and contrast three different knee injuries, ACL, PCL and multi-ligament knee injuries commonly the result of a knee dislocation. The spring board for this conversation being the gruesome injury sustained by Tyreek Hill on national television on Monday Night Football. Those injuries are not just difficult to watch, they can be devastating. They are not uncommonly associated with nerve injuries (drop foot) and, even worse, occasionally vascular injuries potentially resulting in amputation.