osteonecrosis occurring in children

Osteonecrosis, also known as avascular necrosis, is the death of bone tissue due to a lack of blood supply. In children, two main patterns of this condition occur. One involves the partial or complete tearing away of an epiphysis (a bone's growing end), often due to injury, such as in slipped epiphysis of the thighbone. The other type is not caused by mechanical tearing but by a loss of blood supply, leading to bone death. A common example is Legg-Calvé-Perthes disease, which affects the hip in children aged 3 to 13 and is more frequent in boys. This can lead to growth arrest, deformity, and arthritis if not corrected.1234