What is the role of CT scans in the workup of avascular necrosis (AVN)?

Updated: Dec 05, 2020
  • Author: Sunny B Patel, MD; Chief Editor: Herbert S Diamond, MD  more...
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Computed tomography (CT) is not commonly used for assessment of osteonecrosis in pediatric patients. In adults, CT is used principally to provide information for surgical planning, by determining the severity and location of articular collapse and providing evidence of early secondary degenerative joint disease. [19]

CT scans show sclerosis in the central part of femoral head as an asterisk sign. Changes in the anterior part of the femoral head are easily observed

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