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Avascular necrosis: radiological findings and main sites of involvement - pictorial essay

Dair Jocely Enge Junior1, Eduardo Kaiser Ururahy Nunes Fonseca1, Adham do Amaral E Castro1,2

  • 1Department of Radiology and Diagnostic Imaging, Hospital Israelita Albert Einstein, São Paulo, SP, Brazil.

Radiologia Brasileira
|June 19, 2019
PubMed

Insights

Avascular necrosis, the death of bone due to lack of blood supply, presents similar imaging findings across all skeletal locations. Early radiological detection and management are crucial for patient outcomes.

Area of Science:

  • Orthopedics
  • Radiology
  • Pathology

Background:

  • Avascular necrosis (AVN) is characterized by bone death resulting from compromised blood supply.
  • AVN affects various skeletal sites, with distinct designations and epidemiological features.
  • Despite varied presentations, radiological findings and phases are consistent across all forms of AVN.

Purpose of the Study:

  • To review the primary radiological features of different avascular necrosis forms.
  • To emphasize the radiologist's role in diagnosing and managing AVN.
  • To illustrate findings using institutional case examples.

Main Methods:

  • Review of radiological aspects of avascular necrosis.
  • Case collection from a single institution.
  • Analysis of imaging findings across diverse skeletal locations.

Main Results:

  • Consistent radiological phases observed in avascular necrosis, irrespective of anatomical site.
  • Imaging findings are similar for all forms of AVN.
  • Radiological evaluation is key to identifying avascular necrosis.

Conclusions:

  • Avascular necrosis requires prompt detection and management.
  • Radiologists play a vital role in the diagnosis of AVN.
  • Understanding radiological phases aids in managing this bone disease.

Keywords:
Magnetic resonance imagingOsteonecrosis/diagnostic imagingRadiographyTomography, X-ray computed

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