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Anterior penetration of an iliosacral screw through the sacral ala would most likely lead to weakness of which of the following movements?
Great toe dorsiflexion
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If a percutaneous iliosacral screw is placed too anteriorly, and the screw exits anterior to the sacral ala before re-entering the sacral body, what will be the most likely finding postoperatively?
Lack of ankle dorsiflexion
Lack of ankle plantarflexion
Lack of knee extension
Loss of bowel and/or bladder control
Lack of great toe extension
A 39-year-old male is thrown from his motorcycle into a fast-food restaurant and sustains a closed pelvic ring injury. During placement of percutaneous iliosacral screws, the outlet radiograph in Figure A is obtained. What purpose does this view serve?
Evaluation of possible injury to L5 nerve root
Evaluation of anterior-posterior position of screw(s)
Best visualization of sagittal curvature of sacral ala
Best visualization of spinal canal
Best visualization of sacral neural foramina