Abstract
This study clarifies the pattern of fracture lines and facilitates diagnosis of transverse sacral fracture on plain radiographic images. Eight cadaveric sacra were used in this study. A U-shaped transverse sacral fracture at the S2-S3 level was created in all specimens. The fracture line was marked by painting with radio-opaque material and solder metal wires. The following radiographic views were taken: anteroposterior, lateral, AP with 35 degrees cephalad orientation, and inlet view. A double shadow in the upper sacral area can be identified in the plain AP view. As a consequence of the fracture, there are changes in the orientation of the planes of the foramina from the coronal to, more or less, axial plane. Anteroposterior with 35 degrees cephalad orientation radiographs provide good assessment for evaluation of the transverse sacral fracture.
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