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Related Experiment Videos

Differences in radiographic findings between scaphoid fracture patterns.

H Inagaki1, R Nakamura, E Horii

  • 1Department of Hand Surgery, Nagoya University School of Medicine, Nagoya 466-8550, Japan. ineyan240@hotmail.com

Hand Surgery : an International Journal Devoted to Hand and Upper Limb Surgery and Related Research : Journal of the Asia-Pacific Federation of Societies for Surgery of the Hand
|April 6, 2005
PubMed
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Radiography can identify scaphoid fracture patterns, differentiating volar and dorsal types. Combining oblique views with proximal fragment ratio (PFR) improves diagnostic accuracy for these wrist fractures.

Area of Science:

  • Orthopedic surgery
  • Radiology
  • Biomechanics

Background:

  • Scaphoid fractures are common wrist injuries.
  • Classifying scaphoid fracture patterns (volar vs. dorsal) is crucial for treatment.
  • Three-dimensional computed tomography (3D CT) is effective for pattern classification.

Purpose of the Study:

  • To evaluate the diagnostic accuracy of conventional radiography in identifying scaphoid fracture patterns.
  • To compare the effectiveness of different radiographic views and proximal fragment ratio (PFR) measurements.

Main Methods:

  • Ninety-nine patients with scaphoid fractures underwent 3D CT and radiography.
  • Analysis of oblique radiographs (45° pronation and supination) and PFR measurements.
  • Correlation of radiographic findings with 3D CT classifications.

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Main Results:

  • Oblique views identified volar type in 76% and dorsal type in 56% of cases.
  • Proximal fragment ratio (PFR) showed significant differences between volar (0.59) and dorsal (0.43) types.
  • Combined use of oblique views and PFR differentiated patterns in 81% of fractures.

Conclusions:

  • Conventional radiography, particularly with combined oblique views and PFR, can effectively differentiate volar and dorsal scaphoid fracture types.
  • This approach offers a valuable alternative to 3D CT for scaphoid fracture pattern identification.
  • No significant difference in dorsal intercalated segment instability deformity prevalence was noted between fracture types.