This condition, which occurs during childhood and adolescence, involves the stopping of blood flow to the femoral head, leading to abnormalities of the femoral head anatomy. The rounded head of the femur dies, leading to softening of the bone and eventual collapse, leaving the area inflamed and irritated.
Treatment options typically require a period of bed rest, possible traction, and using crutches for limited weight bearing during the acute phase. Surgical options include: core decompression, hip arthroscopy, hip osteotomy, and in severe cases, total joint arthroplasty.
For more detail about this condition, see Legg-Calvé-Perthes Disease: An Overview.