Obturator hernia is a rare disease usually occurring in debilitated elderly women. Pain radiating down the medial thigh and knee (Howship-Romberg sign) is a specific sign of the disease. Presently described is a case of obturator hernia in a 73-year-old female patient who presented with severe left hip pain radiating down the medial thigh and knee, nausea, and loss of appetite. Initially, vertebral disc herniation was thought to be cause, but abdomino-pelvic computed tomography scan revealed left strangulated obturator hernia. Diagnosis of obturator hernia can be challenging. Physicians should consider obturator hernia in the differential diagnosis of knee and hip pain, and investigate for Howship-Romberg sign. Early diagnosis of the disease not only decreases morbidity and mortality, but also presents opportunity to treat with minimally invasive methods.

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