Manual reduction for incarcerated obturator hernia.

Emergent surgery is a common approach for incarcerated obturator hernias, with high morbidity and mortality rates. Moreover, there have been reports of elective surgery cases after noninvasive manual reduction. For a decade, the initial approach in our institution is also manual reduction unless bowel viability is poor. This study aimed to clarify the efficacy and safety of manual reduction followed by elective surgery. We retrospectively reviewed 50 cases of incarcerated obturator hernia from 2010 to 2022 at Iwate Prefectural Iwai Hospital. Manual reduction was attempted in 31 (62%) patients. The reduction was successful in 21 (42%) patients, and most of them received mesh repair using the extraperitoneal approach as elective surgery. However, two patients underwent emergent surgery in the waiting period because of late-onset constriction and a small bowel perforation. Patients with irreducible hernia underwent emergent surgery, except for two patients who received the best supportive care. Postoperative complications were observed in 5% and 22% of reducible and irreducible cases, respectively. Postoperative mortality was zero in both groups. Manual reduction is useful in some cases, but careful observation is needed because late-onset constriction and perforation could occur.

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