Figure 2From: Tomographic index as auxiliary criteria for surgery indication in fracture dislocation of acetabulum posterior wall A straight base line (BL) was drawn throw the P1 and P2 points, and 2 other lines were drawn perpendicular to the BL line: Line W, from the PW point to BL line; and another line H, from the lateral edge of the femoral head, passing through CH point to BL line. Back to article page