Pathoanatomy of the anterior column-posterior hemitransverse acetabular fracture.

Purpose: To define the pathoanatomy of the anterior column-posterior hemitransverse (ACPHT) subtype of acetabulum fractures and assess the morphologic variation therein.

Methods: Retrospective cohort study including 50 patients age greater than 60 with an ACPHT acetabular fracture managed operatively over an 11-year period at an ACS Level 1 Trauma center. Cross-sectional CT images were reviewed for anterior column/wall comminution, anterior column fracture exit point, completeness of the anterior column and posterior column fractures, articular impaction and quadrilateral surface continuity with the posterior column.