Fig. 1

CT scan images showing the acute pelvic ring injury and AP pelvis post-operative x-ray. CT scan images of initial injury (November 2002). Scout image [a] shows the AP pelvic ring injury with diastasis of the symphysis pubis and left sacroiliac joint dislocation; [b] Axial image at the level of the symphysis pubis, showing diastasis of the symphysis pubis associated with extravasation of the contrast material from the bladder, indicating bladder injury; [c] Axial image at the level of the sacroiliac joint, showing widening and posterior dislocation of the left sacroiliac joint with rupture of the anterior sacroiliac ligaments; [d] AP pelvis image taken about six weeks post injury shows fixation of the symphysis pubis by two plates spanning the symphysis pubis and additional left iliosacral S1 screw. The symphysis is stabilized by seven screws; four 6.5 mm diameter cancellous screws and three 4.5 mm diameter cortical screws. The iliosacral screw is a 7.3 mm diameter cannulated screw with a washer flush to the outer table of the ilium, indicating compression between the screw and the bone