Fig. 1
From: Contemplate iliosacral screw in patients with developmental dysplasia of the hip
3D pelvic CT reconstruction images were analyzed in a 55-year-old patient with right unilateral DDH. A Bilateral sacral dysmorphism, DDHon the right side are seen. B More than half of the S1 body located above the iliac cortical density on the right. C ve D axial and coronal reformats made perpendicular to the S1 and S2 sacral osseous corridors. Axial and coronal angulations of the first and second sacral segments were measured. E The maximum length of a 10 mm diameter osseous corridor measured. F Sagittal computed tomography image showing the cross-sectional area of the safe zone