Snowcap sign (avascular necrosis)

Last revised by Assoc Prof Craig Hacking on 15 Jan 2020

Snowcap sign or snowcapping is defined as the appearance of dense sclerosis over the head of humerus or femur in cases of avascular necrosis as seen on plain radiographs, which resembles a snowcapped mountain.

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Cases and figures

  • Case 1
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