Present-day methods of transportation with their attendant greater speed and consequently increased amount of striking force—a force much more violent and sudden than that encountered in the days before the advent of the swift moving motor car—appear to be responsible for fractures of a type unknown in the days of horse-drawn vehicles. Many of the fractures of the present time are of course unchanged in character but, on the other hand, new types of fractures, especially in the vicinity of joints, are occasionally seen, as for instance the "fender fracture" of the outer head of the tibia described by Cotton.
Fractures in the vicinity of joints are always of interest as such fractures may or may not cause serious impairment of function, depending on the amount of injury to the bone and to the joint surfaces, the amount of deformity, the correctness
Penhallow DP. AN UNUSUAL FRACTURE OF THE FEMORAL CONDYLES. JAMA. 1929;92(24):2018–2019. doi:10.1001/jama.1929.92700500005009d