Bilateral avulsion fractures of the anterior superior iliac spines in sprinters

Three cases of bilateral pelvic avulsion fractures in adolescent sprinters are reviewed. Anacute avulsion fracture of the anterior superior iliac spine (ASIS) occurred during active running in three teenaged sprinters. Radiography confirmed a healed fracture of the contralateral ASIS. The clinical features and radiologic appearances are characteristic. The pathophysiology of this type of unique pediatric fracture is discussed. Conservative treatment is successful.