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Imaging of Acetabular Fractures

Acetabular fractures are serious injuries that often are associated with head, visceral, spine, and extremity trauma. The peak incidence is in the third decade. In younger patients, acetabular fractures usually are the result of a high-energy trauma, such as motor vehicle or motorcycle accidents; a fall from a height; or being hit by a car, in which a force applied to the femur is transmitted to the acetabulum.1 More uncommonly, in elderly persons, a less severe trauma can result in an acetabular fracture. An acetabular fracture with disruption of the joint surface, if untreated, will lead rapidly to posttraumatic osteoarthritis. Proper reduction and internal fixation depend on high-quality imaging and accurate classification.