Sakrumfraktur

Sacral

fractures: How should we classify them?. Typical vertical extension of the fracture line, parallel to the sacroiliac joint (left side). Instead, right sacral wing fracture is comminuted, with multiple fracture lines, but it shows a predominant vertical extension.

Sacral

fractures: How should we classify them?. Comminuted fracture of the right sacral wing with extension to the sacroiliac joint (blue arrow).

Sacral

fractures: How should we classify them?. This image shows a fracture line of the transverse process of L5 (blue arrows), suggesting a lesion of the ischiolumbar ligament. Our fracture line is lateral to L5-S1 facet, no lumbosacral instability is expected.

Sacral

fractures: How should we classify them?. Right sacral zone 2 fracture involving more than one foramen (ventral and dorsal foramina). Neurologic deficits are not common but could be possible.

Sacral

fractures: How should we classify them?. Absence of the right sacral wing at the level of S4-S5 and anterior sacral foramina involvement (green arrow). Note the presence of a hyperdense soft-tissue haematoma and blurring of right piriformis muscle, probably damaged.

Sacral

fractures: How should we classify them?. Displaced fracture of the right sacral wing at the level of S4-S5 (green line).

Sacral

fractures: How should we classify them?. Right lateral sacral crest fracture. Note the extension to the posterior sacral foramina (yellow arrows).

Sacral

fractures: How should we classify them?. Transverse zone 3 fractures (yellow arrows, a zone 3 fracture subtype II) may be caused by a direct trauma to the sacrum. This kind of fracture involves the central sacral canal and is related to neurological damage.

Sacral

fractures: How should we classify them?. Bilateral zone 1 fractures (red arrows) affecting both sacral wings.J.A Prat-Matifoll, Radiology Department; Vall Hebron Hospital