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Paediatrics
intermediate
X-Type

Legg-Calvé-Perthes Disease

Pediatric Hip

A 6-year-old boy presents with 3 months of progressive right hip pain and limp. He has no fever or systemic symptoms. On examination, he has limited internal rotation and abduction of the right hip. Radiographs show increased density of the femoral head with some fragmentation. He is in the early fragmentation phase of disease. Regarding Legg-Calvé-Perthes disease:

Mark each as TRUE or FALSE

A

Perthes disease is idiopathic osteonecrosis of the femoral head in children, affecting boys 4-5 time...

B

The Herring lateral pillar classification (made during fragmentation phase) is the most useful progn...

C

Perthes is more common in girls; the lateral pillar classification is made during the reossification...

D

Treatment depends on age, Herring classification, and range of motion: children less than 6 years us...

E

Poor prognostic factors include: age greater than 8 years at onset, female sex, Herring Group B/C or...

Answer the questions to see explanations

Click T (True) or F (False) for each option