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Background <p>Bone infarctions are a&#xa0;relatively understudied subgroup of osteonecroses in the literature. As frequently incidental, yet distinct imaging findings, they must be interpreted in the context of predisposed patient groups, relevant risk factors, differential diagnoses, and potential complications.</p> Objective <p>To present the interrelationship of pathophysiology with imaging, as well as the clinical courses, histopathological correlates, and diagnostic challenges.</p> Materials and methods <p>Literature research over the past three decades on epidemiology, pathophysiology, risk factors, and the clinical spectrum with pertinent implications for imaging (plain radiography, computed tomography [CT], magnetic resonance imaging [MRI]).</p> Results <p>Bone infarctions manifest in the meta-/diaphyses of long bones and are frequently multifocal. Robust epidemiological data are lacking. Clinically, they present with acute, painful courses in systemic diseases or as oligosymptomatic incidental imaging findings. Imaging reflects the pathophysiology. Plain radiography is in general sufficient for diagnosis in late stages, whereas MRI provides the highest diagnostic accuracy.</p> Conclusion <p>Although often an “Aunt Minnie” in imaging, bone infarctions should be understood as a&#xa0;systemic condition. Differentiation from acute osteomyelitis and the rare risk of malignant transformation represent major clinical and diagnostic challenges.</p>

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Knocheninfarkte – von der Pathophysiologie zur Bildgebung

  • 期刊论文

  • 发表日期：

    2025年12月5日

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  • Sardi Hyska,
  • Paul Reidler,
  • Nina Hesse

摘要

Background

Bone infarctions are a relatively understudied subgroup of osteonecroses in the literature. As frequently incidental, yet distinct imaging findings, they must be interpreted in the context of predisposed patient groups, relevant risk factors, differential diagnoses, and potential complications.

Objective

To present the interrelationship of pathophysiology with imaging, as well as the clinical courses, histopathological correlates, and diagnostic challenges.

Materials and methods

Literature research over the past three decades on epidemiology, pathophysiology, risk factors, and the clinical spectrum with pertinent implications for imaging (plain radiography, computed tomography [CT], magnetic resonance imaging [MRI]).

Results

Bone infarctions manifest in the meta-/diaphyses of long bones and are frequently multifocal. Robust epidemiological data are lacking. Clinically, they present with acute, painful courses in systemic diseases or as oligosymptomatic incidental imaging findings. Imaging reflects the pathophysiology. Plain radiography is in general sufficient for diagnosis in late stages, whereas MRI provides the highest diagnostic accuracy.

Conclusion

Although often an “Aunt Minnie” in imaging, bone infarctions should be understood as a systemic condition. Differentiation from acute osteomyelitis and the rare risk of malignant transformation represent major clinical and diagnostic challenges.