Pregnancy-related osteonecrosis

Pregnancy-related osteonecrosis , also known as pregnancy-related avascular necrosis, is a common cause of femoral head osteonecrosis. Since the femoral head is deficient in blood supply, it is particularly vulnerable to osteonecrosis.

The pathophysiology is thought to be due to venous stasis and increased intramedullary pressure.

Radiographic features

Radiographs usually detect the advanced stages of osteonecrosis (usually 3 or 4).

Classical features of femoral head AVN include: 

  • articular head irregularity/defect
  • subchondral lucency (arrow)
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Article information

rID: 1917
Tags: stub, refs, cases, cases
Synonyms or Alternate Spellings:
  • Pregnancy related AVN
  • AVN in pregnancy
  • Pregnancy-related avascular necrosis
  • Pregnancy related osteonecrosis
  • Pregnancy related avascular necrosis

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