Incarcerated obturator hernia with a fistula to the adductor muscles: Case report of a rare hernia with uncommon symptoms, discovered by CT.

Introduction: Obturator hernias are rare, occur mainly in slender people and predominantly in females. Underlying pathology of the obturator hernia is a weakening of the obturator membrane. The obturator hernia is situated between the pubic and ischial bones and is therefore clinically occult. Patients predominantly present with symptoms of bowel obstruction, but can also present with sensory disturbance, leg pain and hip pain. Due to the usually delayed diagnosis, the obturator hernia is associated with increased morbidity and mortality.
Case Presentation: A 71-year-old female patient with hip pain underwent a protracted diagnostic work-up and was referred to the surgical department by the treating orthopedic surgeon. An incarcerated obturator hernia with a fistula in the adductor ligament was finally diagnosed via CT. The operation included laparoscopic reduction, hernia repair, open small bowel segment resection, local surgical exploration, lavage and antibiotic treatment. The primary hernia repair was performed by direct suture due to the contamination, and a post-primary mesh repair was indicated. However, after complete recovery and no remaining symptoms, the patient refused this despite the indication for definitive laparoscopic hernia repair.
Discussion: Hip pain can have multiple causes. Taking physical characteristics into account can lead to the correct diagnostic pathway. The CT scan revealed the fistula which led to the laparoscopic surgery. Due to the intestinal damage and contamination, the surgical steps were adapted.
Conclusion: Obturator hernias should be considered as a reason for atypical symptoms in slender, older patients. Adequate surgical management can be chosen after correct diagnosis.
Competing Interests: Conflict of interest statement The authors indicated no potential conflict of interest related to this manuscript.
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