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[Avascular necrosis in a patient diagnosed with coxartrosis]

Jasmina Chamat1, Camilla Bergh2, Maziar Mohaddes2

  • 1Sahlgrenska universitetssjukhuset - ortopedkliniken Goteborg, Sweden - Gothenburg, Sweden.

Lakartidningen
|October 23, 2019
PubMed

Insights

Avascular necrosis (AVN) of the femoral head can mimic coxartrosis, especially in early stages. Magnetic resonance imaging (MRI) is crucial for accurate diagnosis, differentiating AVN from hip arthritis.

Area of Science:

  • Orthopedics
  • Radiology
  • Bone Diseases

Background:

  • Coxartrosis (hip osteoarthritis) is a prevalent cause of hip pain in the elderly.
  • Avascular necrosis (AVN), or osteonecrosis, affects the femoral head due to compromised blood supply.
  • The exact causes of AVN remain unclear, with numerous risk factors identified, yet many patients have no known risk factors.

Observation:

  • AVN typically affects a younger demographic compared to coxartrosis.
  • Early-stage AVN often presents without distinct radiographic findings on plain films.
  • Distinguishing between AVN and coxartrosis can be challenging initially.

Findings:

  • Magnetic resonance imaging (MRI) enables early diagnosis of AVN.
  • MRI is considered the gold standard for noninvasive diagnostic evaluation of AVN.
  • The case highlights bilateral AVN initially misdiagnosed as coxartrosis.

Implications:

  • Early and accurate diagnosis of AVN is critical for appropriate management.
  • MRI's role in differentiating AVN from coxartrosis is essential for timely intervention.
  • Understanding AVN's presentation is key to avoiding misdiagnosis in younger patients.

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