Apophyseal anterior inferior iliac spine fractures are rare injuries. They most commonly occur in athletes in ado -lescence period. Because the ossification of pelvis is not completed, apophyses are the weakest part of musculo -tendinous unit during this period, thus avulsion fractures are more frequent than muscle ruptures. The fracture oc-curs as a result of the pull of the straight head of the rec-tus femoris muscle. Patients feel a severe pain localized in groin, and cannot bear weight. With conservative treat-ment including bed rest, analgesia, using crutches and toe-touch weight bearing, progressing to full weight bear-ing as tolerated, satisfactory results could be obtained. We present a 14-year old boy with anterior inferior iliac spine fracture occurred in an uncommon manner
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