Occult Fractures of the Waist of the Scaphoid
Early Diagnosis by High-Spatial-Resolution Sonography
Olivier Hauger1,
Olivier Bonnefoy1,
Maryse Moinard1,
Daniel Bersani2 and
François Diard1
1 Service de Radiologie, Groupe Hospitalier Pellegrin, CHRU Bordeaux, Place
Amélie Raba Léon, 33076 Bordeaux Cedex, France.
2 Service de Radiologie, Centre Hospitalier Général de Pau, 4
Blvd. Hauterive, 64000 Pau, France.

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Fig. 1A. Optimal positions for sonography of scaphoid bone.
Photographs show wrist placed in ulnar deviation in either frontal (A)
or sagittal (B) planes to elongate scaphoid. This position allows
optimal visualization of its waist.
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Fig. 1B. Optimal positions for sonography of scaphoid bone.
Photographs show wrist placed in ulnar deviation in either frontal (A)
or sagittal (B) planes to elongate scaphoid. This position allows
optimal visualization of its waist.
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Fig. 2. 21-year-old woman with acute trauma of wrist and moderate
suspicion of scaphoid fracture. Longitudinal sonograms show scaphoid with
wrist in ulnar deviation. Hemarthrosis is defined as compressible and diffuse
collection at level of scaphoid.
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Fig. 3. 37-year-old man with acute trauma of wrist and high suspicion
of scaphoid fracture. Longitudinal sonogram shows scaphoid with wrist in ulnar
deviation. Hematoma is defined as no or less compressible collection at same
level as in Figure 2. Cursors
indicate superior and inferior limits of hematoma (i.e., its thickness)
without and with compression.
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Fig. 4A. 25-year-old man with acute trauma of left wrist and moderate
suspicion of scaphoid fracture. Initial conventional radiograph shows no
evidence of fracture.
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Fig. 4B. 25-year-old man with acute trauma of left wrist and moderate
suspicion of scaphoid fracture. High-resolution sonogram of scaphoid obtained
in transverse plane shows cortical disruption suggestive of fracture
(arrow) with surrounding hematoma (arrowheads). Opposite
side is shown as reference.
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Fig. 4C. 25-year-old man with acute trauma of left wrist and moderate
suspicion of scaphoid fracture. Conventional radiograph obtained 14 days after
initial radiograph (same view as A) shows fracture line
(arrow) through scaphoid bone.
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Fig. 5A. 26-year-old man with acute trauma of left wrist and high
suspicion of scaphoid fracture. Initial conventional radiograph shows no
evidence of fracture.
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Fig. 5B. 26-year-old man with acute trauma of left wrist and high
suspicion of scaphoid fracture. High-resolution sonogram obtained in sagittal
plane with wrist in ulnar deviation shows incompressible collection
(arrowheads) at level of scaphoid suggesting hematoma.
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Fig. 5C. 26-year-old man with acute trauma of left wrist and high
suspicion of scaphoid fracture. Two-dimensional reconstruction of CT scan
obtained in frontal plane 2 weeks after trauma shows no evidence of fracture
despite persistence of clinical suspicion.
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Fig. 5D. 26-year-old man with acute trauma of left wrist and high
suspicion of scaphoid fracture. Delayed high-resolution sonogram shows
resolution of hematoma.
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Fig. 6A. 33-year-old man with acute trauma of left wrist and high
suspicion of scaphoid fracture. Initial conventional radiograph shows no
evidence of fracture.
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Fig. 6B. 33-year-old man with acute trauma of left wrist and high
suspicion of scaphoid fracture. High-resolution sonogram obtained in sagittal
plane shows hyperechogenic line (arrowheads), parallel to scaphoid
cortex that is more likely related to positive echo signal of anterior
interface of cartilage induced by high gain level than to subperiosteal
hematoma, because scaphoid is almost entirely covered with cartilage.
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Fig. 6C. 33-year-old man with acute trauma of left wrist and high
suspicion of scaphoid fracture. Delayed two-dimensional reconstruction of CT
scan obtained in frontal plane shows no evidence of fracture.
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Fig. 7. Proposed algorithm for imaging of suspected scaphoid bone
fracture.
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Copyright © 2002 by the American Roentgen Ray Society.