(a) Oblique sagittal reformatted view of post-procedure CT (bone window, slice thickness 1 mm) of the pelvic bones after inserting screws and first step of cementoplasty. The cross section of the proximal part of the sacral screw is visible (small arrow). After this procedure, two large osteolytic areas compromising the whole stability of the osteosynthesis remained, one in the right acetabulum and the other in the right posterior iliac wing with no cement continuity between the two screws at that step (asterisk). (b) Oblique coronal reformatted view of post-procedure CT (bone window, slice thickness 1 mm) of the pelvic bones after inserting screws and first step of cementoplasty shows the sacral screw (small arrow) anchored into the bone with cementoplasty and a slight extravasation of bone cement in soft-tissue. (c) 3D oblique anterior reformatted view of post-procedure CT shows the whole osteosynthesis with the two screws (small arrows) surrounded by cement.