Figure 16a. (a) Anterior cervical fixation plate with prefabricated bone allograft that failed to fuse. Lateral radiograph shows radiolucency around the allograft. The somewhat anterior position of the allograft and plate is typical for these plates, and it is not subluxed from its original placement position. (b) Oblique radiograph of a 27-year-old woman who had a tumor resected from the upper thoracic spine demonstrates Steffee plates and screws that were placed for spinal stabilization. Gold foil (arrows) was inserted to protect the spinal cord when the patient underwent radiation therapy.