Fractures which disrupt the pelvic ring are a common and often life threatening result of major trauma. They are associated with serious orthopedic management problems in the pelvis as well as fractures and soft tissue injuries in other sites. Pelvic trauma is further complicated by non-orthopedic injuries to the GU tract, visceral organs, chest, central nervous and vascular systems.

The acetabulum is a portion of the pelvis that is often fractured during trauma to the pelvis, either as part of a pelvic fracture or in isolation. Acetabular fractures are usually complex and result in articular incongruity, leading to postraumatic osteoarthritis. Classification of acetabular fractures is important so that the orthopaedist can plan appropriate treatement strategy.

The radiologist needs to be familiar with the emergent evaluation of patients with pelvic and acetabular fractures: to guide imaging choices, to expedite prompt and accurate patient diagnosis, and to effectively communicate with the referring trauma surgeons.

• Teacher: John Hunter