wagon wheel fracture
An older term for a fracture of the distal femoral epiphysis with anterior subluxation, so named for the fracture’s mechanism: the lower leg, usually of a child, was inadvertently caught in the spokes of a revolving wheel, while the upper leg was pinned against the vehicle.
The fracture typically occurred on the Conestoga wagons used to transport pioneers and settlers during the 19th
century migration of American pioneers across the wild West.
Reference doi: 10.1148/rg.244045015 RadioGraphics, 2004; 24:1009-1027