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Paediatrics
intermediate
X-Type

Legg-Calve-Perthes Prognosis

Hip Disorders

A 7-year-old boy presents with a 3-month history of progressive limp and hip pain. He is otherwise healthy with no history of trauma. Examination shows decreased hip abduction and internal rotation. Radiographs demonstrate a fragmented, dense femoral head with lateral pillar involvement affecting approximately 40% of the lateral pillar height. His bone age is consistent with chronological age. Regarding prognosis in Legg-Calve-Perthes disease:

Mark each as TRUE or FALSE

A

The Herring lateral pillar classification is the most reliable prognostic indicator; Group A (latera...

B

Age at onset is a critical prognostic factor; children under 6 years have significantly better outco...

C

Age at onset is irrelevant; lateral pillar classification should be performed at initial presentatio...

D

The goal of treatment is to maintain a spherical femoral head that is contained within the acetabulu...

E

Poor prognostic factors include: age greater than 8 years at onset, lateral pillar group B/C or C, C...

Answer the questions to see explanations

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