Idiopathic avascular necrosis of femoral head in children 4–10 yrs. More common in boys; often unilateral. Clinical: limp, hip/knee pain, limited abduction/internal rotation. Imaging: X-ray shows increased density, fragmentation, collapse, reossification (Waldenström stages). Management: containment (bracing, osteotomy) to keep femoral head within acetabulum.
What is the primary goal of management in Perthes disease?
At what age does Perthes disease typically present with the best prognosis?
Which radiological feature is characteristic of Stage I Perthes disease?
What is the main indication for surgical intervention in Perthes disease?
What is the typical demographic incidence of Perthes disease?
Which of the following is a sign that may indicate impending collapse of the femoral head in Perthes disease?
What is the duration of the fragmentation phase in Perthes disease according to Waldenström classification?
Which of the following management options is NOT typically used in Perthes disease?
What is the significance of the Herring lateral pillar classification in Perthes disease?
What is a common physical examination finding in a child with Perthes disease?
