Single photon emission computed tomography scanning in diagnosis of a rare pelvic avulsion fracture.

Avulsion fractures of the anterior inferior iliac spine are a relatively uncommon injury. Their diagnosis is usually made based on history, findings of the clinical examination, and standard roentgenograms. In the patient described, the diagnosis of avulsion of the anterior inferior iliac spine was made with the assistance of a single photon emission computed tomography scan, a relatively new diagnostic tool.