Legg-Calve-Perthes disease most commonly affects which population?

Legg-Calve-Perthes disease most commonly affects which population?

• A. Adults 20-40 years old
• B. Infants under 2 years old
• C. Elderly over 70 years old
• D. Children 4-10 years old, boys

Answer: (D)

Legg-Calvé-Perthes disease is a pediatric condition in which the blood supply to the femoral head is temporarily disrupted, leading to avascular necrosis and subsequent remodeling as a child grows. It most commonly affects school-age children, with onset typically around ages 4 to 8 (often described up to about 10), and there is a male predominance. Therefore, the population described—children in the 4- to 10-year-old range, especially boys—is the group where this disease most commonly occurs. The other age groups are not as typical for Perthes, as infants, adults, and the elderly are more likely to have different hip conditions.

Legg-Calvé-Perthes disease is a pediatric condition in which the blood supply to the femoral head is temporarily disrupted, leading to avascular necrosis and subsequent remodeling as a child grows. It most commonly affects school-age children, with onset typically around ages 4 to 8 (often described up to about 10), and there is a male predominance. Therefore, the population described—children in the 4- to 10-year-old range, especially boys—is the group where this disease most commonly occurs. The other age groups are not as typical for Perthes, as infants, adults, and the elderly are more likely to have different hip conditions.