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DOI:10.2214/AJR.05.1269
AJR 2006; 187:915-925
© American Roentgen Ray Society

Pictorial Essay

Classification of Common Acetabular Fractures: Radiographic and CT Appearances

N. Jarrod Durkee1,2, Jon Jacobson1, David Jamadar1, Madhav A. Karunakar3, Yoav Morag1 and Curtis Hayes1,4

1 Department of Radiology, University of Michigan Medical Center, 1500 E Medical Center Dr., TC-2910G, Ann Arbor, MI 48109-0326.
2 Present address: Department of Radiology, University of Washington, Seattle, WA.
3 Department of Orthopedic Surgery, University of Michigan Medical Center, Ann Arbor, MI 48109-0326.
4 Present address: Department of Radiology, Medical College of Virginia, Virginia Commonwealth University, Richmond, VA.

OBJECTIVE. Accurate characterization of acetabular fractures can be difficult because of the complex acetabular anatomy and the many fracture patterns. In this article, the five most common acetabular fractures are reviewed: both-column, T-shaped, transverse, transverse with posterior wall, and isolated posterior wall. Fracture patterns on radiography are correlated with CT, including multiplanar reconstruction and 3D surface rendering.

CONCLUSION. In the evaluation of the five most common acetabular fractures, assessment of the obturator ring, followed by the iliopectineal and ilioischial lines and iliac wing, for fracture allows accurate classification. CT is helpful in understanding the various fracture patterns.

Keywords: acetabular fracture • CT • musculoskeletal imaging • pelvic imaging • radiography • trauma


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