Internal fixator vs external fixator in the management of unstable pelvic ring injuries: A prospective comparative cohort study

Figure 1 Intraoperative fluroscopy images used to insert the internal fixator screws. A: Obturator outlet view showing the teardrop (*). A sharp starting awl was used to open the cortex for screw insertion; B: Pedicle finder was then used to establish the bony tunnel. Correct screw trajectory was checked in the obturator outlet, obturator inlet and iliac views; C: After screw insertion the three views checked agin to ensure that the screw did not penetrate the cortex and was placed totally intraosseous.