Which patient population is primarily affected by Legg-Calve-Perthes Disease?

Legg-Calve-Perthes Disease primarily affects school-aged children, typically between the ages of 4 and 10 years old. This condition is characterized by avascular necrosis of the femoral head due to a temporary loss of blood supply. The most significant clinical features include hip pain, limping, and decreased range of motion. Since school-aged children are at the right developmental stage where the disease manifests, they are the most commonly affected group.

In contrast, infants and newborns are not in the typical age range for this condition, as it is rare to see Legg-Calve-Perthes Disease manifesting at such early ages. Adolescents may also experience hip-related issues, but the specific pathology of Legg-Calve-Perthes Disease does not align with this age group’s common presentations, instead being more prevalent in younger children. Therefore, the precise age range and characteristics of Legg-Calve-Perthes Disease make school-aged children the population most affected by this disease.