What is the name for avascular necrosis of the hip in children?

The condition referred to as avascular necrosis of the hip in children is known as Legg-Calve-Perthes disease. This disease occurs when there is a temporary loss of blood supply to the femoral head, leading to bone tissue death and subsequent regeneration, which can ultimately affect the hip joint’s structure and function.

In children, the disease typically presents between the ages of 4 and 10 and may lead to hip pain and limping. Timely diagnosis and management are crucial to minimize long-term complications, such as osteoarthritis or deformities of the hip. The term "avascular necrosis" accurately describes the underlying pathophysiology, wherein the lack of vascular supply causes the bone to die and can lead to pain and restricted movement in the affected joint.

In contrast, the other conditions presented do not specifically pertain to avascular necrosis of the hip in children: Osteochondritis dissecans involves the detachment of bone and cartilage, Slipped capital femoral epiphysis is characterized by displacement of the femoral head, and septic arthritis is an infection in the joint, all differing in etiology and treatment from Legg-Calve-Perthes disease.