“Rule of two” is outmoded and unhelpful

EDITOR,—We disagree with several parts of the “rule of twos” in Robin Touquet and colleagues' article on teaching radiology in accident and emergency medicine.1 The authors state that when a fracture is suspected the radiograph must include the joint at either end of the long bones because of the risk of an associated dislocation or subluxation. If this practice were carried out then all radiographs of twisted ankles would include the knee …