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Stress fractures: MR imaging.

J K Lee1, L Yao

  • 1Department of Radiology, Albany Medical College, NY.

Radiology
|October 1, 1988
PubMed
Summary
This summary is machine-generated.

High-field-strength magnetic resonance (MR) imaging reveals characteristic findings for stress fractures. These imaging features can help differentiate stress fractures from occult intraosseous fractures.

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Area of Science:

  • Orthopedic imaging
  • Radiology
  • Musculoskeletal imaging

Background:

  • Stress fractures are common injuries, often difficult to diagnose with conventional radiography.
  • Early and accurate diagnosis is crucial for appropriate management and preventing complications.

Purpose of the Study:

  • To evaluate the utility of high-field-strength magnetic resonance (MR) imaging in diagnosing stress fractures.
  • To identify characteristic MR imaging findings indicative of stress fractures.

Main Methods:

  • Retrospective analysis of five cases with clinically suspected stress fractures.
  • High-field-strength MR imaging was performed on all patients.
  • Radiographic correlation was performed for all cases.

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Main Results:

  • MR images consistently showed bandlike areas of very low signal intensity in the intramedullary space, continuous with the cortex.
  • T1-weighted images demonstrated surrounding decreased signal intensity in the marrow space.
  • T2-weighted images revealed high signal intensity in the intramedullary space (three cases) and juxtacortical/subperiosteal regions (two cases) within 3 weeks of symptom onset.

Conclusions:

  • High-field-strength MR imaging demonstrates characteristic findings that can aid in the diagnosis of stress fractures.
  • These MR findings may help distinguish stress fractures from occult intraosseous fractures, improving diagnostic accuracy.