Avulsion fracture of the anterior superior iliac spine presenting as acute-onset meralgia paresthetica.

Avulsion fracture of the anterior superior iliac spine is rare. Most cases occur in adolescents involved in competitive sports or vigorous exercise in which the sartorius and tensor fascia lata muscles are contracted strongly and suddenly against a hyperextended trunk. Patients who sustain this injury usually experience acute pain in the anterior pelvic region. We describe a patient with avulsion of the anterior superior iliac spine who presented with meralgia paresthetica. The symptoms resolved with conservative treatment.