Quadrilateral plate fractures of the acetabulum: Classification, approach, implant therapy and related research progress

Figure 2 Surgical treatment of acetabular fracture with central dislocation of the femoral head involving quadrilateral plate through ilioinguinal approach. A: Acetabular fracture with central dislocation of the femoral head involving the quadrilateral plate (QP); B: Acetabular top compression (seagull sign); C: QP fracture with obvious internal displacement; D: The three classic windows can be exposed by separating and protecting important anatomical structures such as the femoral vessels, femoral nerves and spermatic cord through the ilioinguinal approach; E: A window at the top of the acetabulum (shown by the yellow circle) is used to reduce the compressed articular surface at the top of the acetabulum; F: Intraoperative fluoroscopy (anterior column plate indicated by the red arrow, posterior column screw indicated by the yellow arrow).