Fig. 3From: Osteochondral impaction of the posterior acetabular surface without cortical fracture of any wall or column: an undescribed pattern of acetabular injurya–c Postoperative X-ray. One plate is on the posterior column to maintain reduction of the posterior wall. The second plate is under the ischium to maintain reduction of the intra-articular fragment and a fragment of thelamina quadrilateraBack to article page