Ankle and Foot 47 - Department of Radiology - University of ...

2270 VII Imaging of the Musculoskeletal System
C
A
D
B
Figure 47-80. Bilateral calcaneal
fractures in a 25-year-old who
fell from a three-story parking
garage, landing feet first. Lateral
radiographs of the left (A) and
right (B) ankles were obtained. In
the left ankle, lucent fracture lines
are clearly seen (arrowheads). In
the right ankle, Böhler’s angle is
flattened (compare with part N,
after open reduction and internal
fixation [ORIF]). As part of the
trauma workup, a CT scan of the
abdomen and pelvis was
performed, hence the presence of
oral contrast in the colon on the
anteroposterior scout image (C).
Because of the mechanism causing
bilateral calcaneal fractures, it was
necessary to evaluate the lumbar
spine for fractures. The same raw
data from the large field-of-view
(FOV) scan of the abdomen and
pelvis were reconstructed into
thin, overlapping, small FOV
images centered on the lumbar
spine as source images (D). The
arrowheads point to a fracture
through the anterosuperior end
plate of L1. E, Sagittal reformatted
CT image of the lumbar spine
shows the thin fracture through the
anterosuperior corner of L1
(arrowhead). F and G, MR sagittal
T1- and proton-density–weighted
images do not well demonstrate
the L1 fracture.
E F G
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9/9/2008 5:35:13 PM