Obturator hernia is a rare pelvic hernia with incidence of 1%. It's a significant cause of intestinal obstruction in emaciated elderly women. Delayed diagnosis and surgical intervention contributed to its relatively high morbidity and mortality. We present a typical case of obturator hernia with positive Howship-Romberg sign and Hannington-Kiff sign. The diagnosis was confirmed by spiral CT preoperatively. During the emergency laparotomy, the incarcerated intestine was reduced and removed. Obturator foramen was repaired by simple suture. The patient recovered uneventfully and no recurrence occurred during the follow-up. The obturator hernia should be included in the differential diagnosis if clinically suspected. Early diagnosis and prompt surgical treatment are essential to reduce the morbidity and mortality associated with obturator hernia.
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