Dashboard Fracture

The name dashboard fracture refers to a fracture which typically occurs in automobile accidents with impaction of the knee upon the dashboard. This results in fracture of the posterior rim of the acetabulum by the femoral head.. This type of fracture is associated with patellar fractures and posterior cruciate ligament fractures.
A AP radiograph of the right hip. This shows a markedly comminuted fracture of the acetabulum, involving both the anterior and posterior columns. This patient was the driver of an automobile.

B Axial CT. This image of the right hip at the acetabular level shows the fractures of the anterior and posterior columns.

Links to online textbooks

Wheeless' Orthopedics: discussion of posterior column fractures

References:

Mosheiff R, Segal D, Wollstein R, Sagiv S, Liebergall M: Midshaft femoral fracture, concomitant ipsilateral hip joint injury, and disruption of the knee extensor mechanism: a unique triad of dashboard injury Am J Orthop. 1998 Jun;27(6):465-73. [See related articles]

A	AP radiograph of the right hip. This shows a markedly comminuted fracture of the acetabulum, involving both the anterior and posterior columns. This patient was the driver of an automobile.
B	Axial CT. This image of the right hip at the acetabular level shows the fractures of the anterior and posterior columns.