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Ischiopubic insufficiency fractures: MRI appearances
1Department of Radiology, Shinshu University School of Medicine, Matsumoto, Japan.
Skeletal Radiology
|February 7, 1998
Summary
Magnetic resonance imaging (MRI) can identify insufficiency fractures by showing a fluid-like signal within the fracture gap. This MRI finding, along with the absence of contrast enhancement, helps differentiate these injuries from pathologic fractures.
Area of Science:
- Radiology
- Orthopedics
- Medical Imaging
Background:
- Insufficiency fractures are common in elderly individuals.
- Distinguishing insufficiency fractures from pathologic fractures is crucial for appropriate management.
Purpose of the Study:
- To evaluate the magnetic resonance imaging (MRI) appearances of ischiopubic insufficiency fractures.
- To assess the utility of MRI in differentiating insufficiency fractures from pathologic fractures.
Main Methods:
- Retrospective analysis of spin echo MRI scans with gadolinium enhancement.
- Emphasis on signal changes, fracture gap morphology, and adjacent bone marrow appearance.
- Study included five elderly women with ischiopubic insufficiency fractures.
Main Results:
- No contrast enhancement was observed at the fracture gap or adjacent bone marrow in any case.
- A cleft-like, elongated bright signal area, suggestive of fluid collection, was consistently noted within the fracture gap.
- MRI provided additional information regarding fracture healing status.
Conclusions:
- The absence of contrast enhancement and presence of a "fluid collection" within the fracture gap on MRI may suggest non-union.
- MRI findings can aid in the diagnosis and management of insufficiency fractures.
- MRI offers valuable insights beyond conventional imaging for fracture assessment.