86-year-old female, farmer came to our hospital complained of sudden onset of left thigh and left knee pan with left lower abdominal discomfort, when she was working in the field. She could not move her left leg because of severe pain. 2-month prior, she noticed short duration and repeated similar left thigh and knee pain without abdominal discomfort. She consulted her attending physician, and was treated with NSAIDs. In this time, her pain was continued longer, and complicated with abdominal discomfort. Physical examination showed tenderness in left lower quadrant of abdomen, but abdomen was soft with no rigidity and normal bowel sound. Her thigh and knee pain was severe and worsened with extension or abduction of left leg. Plain CT scan showed migrated small intestine into left obturator canal (Figure 1), showing obturator hernia (Figure 2). There was no evidence of peritonitis or ileus. Then, her symptoms and herniation