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[Magnetic resonance imaging of bone infarction. Apropos of 2 cases]
1Clinique Rhumatologique, CHRU de Nancy, Hôpital de Brabois, Vandoeuvre-lès-Nancy.
Abstract:
Bone infarcts, generally clinically latent, are only identified late in there course on x-rays, which reveal dense, irregular shadows resembling puffs of smoke situated in the metaphyso-diaphyseal regions of the long bones. Occasionally, they may be responsible for pain and are suggestive of neoplastic degeneration. MRI examination is valuable in these cases. Like necrosis of the femoral head, bone infarcts are demonstrated early in their course by MRI, which reveals zones of reduced signal with irregular margins with scattered areas of increased signal of fat intensity.
Insights
Bone infarcts are often asymptomatic and detected late on X-rays. Magnetic resonance imaging (MRI) aids in early detection, showing characteristic signal changes in bone infarcts.
Area of Science:
- Radiology
- Orthopedic Imaging
- Bone Pathology
Background:
- Bone infarcts are typically asymptomatic and diagnosed late via radiography.
- Radiographic findings include dense, irregular shadows in the metaphyseal-diaphyseal regions of long bones.
- Infrequent symptoms can mimic neoplastic conditions, necessitating advanced imaging.
Purpose of the Study:
- To highlight the diagnostic value of Magnetic Resonance Imaging (MRI) in evaluating bone infarcts.
- To compare MRI findings with radiographic appearances of bone infarcts.
- To emphasize MRI's capability for early detection of bone infarcts.
Main Methods:
- Review of radiographic findings characteristic of bone infarcts.
- Analysis of MRI sequences for detecting bone infarcts.
- Comparison of MRI and radiographic detection timelines.
Main Results:
- X-rays reveal bone infarcts late as dense, irregular shadows.
- MRI demonstrates bone infarcts early in their course.
- MRI findings include reduced signal zones with irregular margins and scattered high-signal fat intensity areas.
Conclusions:
- MRI is a valuable tool for the early diagnosis of bone infarcts.
- MRI provides detailed visualization of bone infarcts, aiding in differentiation from other pathologies.
- Early MRI detection can potentially prevent misdiagnosis and guide appropriate management.