Bilateral avulsion fractures of the anterior superior iliac spines in sprinters.

Three cases of bilateral pelvic avulsion fractures in adolescent sprinters are reviewed. An-acute 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.