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Purpose <p>To provide a nationwide overview of groin hernia surgeries in Japan, using data from the National Clinical Database (NCD) as of 2023, with emphasis on procedure types, demographic trends, and hernia classification by sex and recurrence status.</p> Methods <p>We analyzed data on groin hernia surgeries registered in the NCD from January to December, 2023. Procedures were classified into four categories: open or endoscopic, and inguinal or femoral. Variables included age, sex, surgical urgency, anesthesiologist involvement, and admission type. Longitudinal trends (2011–2023) and sex-/recurrence-specific differences were also evaluated.</p> Results <p>A total of 127,139 groin hernia repairs were performed at 2,143 institutions. Inguinal hernias accounted for 96.5% of the repairs and femoral hernias accounted for 3.5%, with 56.8% of all the hernias repaired endoscopically. Emergency surgery was done more frequently for femoral hernias (44.3%) than for inguinal hernias (2.6%). Femoral hernias were more common in women, and their proportion was higher among recurrent hernias than primary hernias for both sexes. Recurrent hernia repair comprised 3.8% of the hernia surgeries for male patients and 1.9% of those for female patients. The number of endoscopic repairs increased over time, especially for bilateral hernias.</p> Conclusion <p>This is the first large-scale hernia classification study from Asia. It highlights sex- and recurrence-specific patterns and supports clinical and international registry comparisons.</p>

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Trends in groin hernia repair in Japan: analysis of the 2023 annual report from the National Clinical Database

  • 期刊论文

  • 发表日期：

    2026年3月10日

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  • Masanori Sato,
  • Hiroyuki Yamamoto,
  • Saseem Poudel,
  • Itsuro Nagae,
  • Taketo Matsubara,
  • Tatsuya Tazaki,
  • Tsuyoshi Takagi,
  • Ken Shirabe,
  • Hideki Ueno,
  • Takehiro Hachisuka,
  • Kyosuke Miyazaki

摘要

Purpose

To provide a nationwide overview of groin hernia surgeries in Japan, using data from the National Clinical Database (NCD) as of 2023, with emphasis on procedure types, demographic trends, and hernia classification by sex and recurrence status.

Methods

We analyzed data on groin hernia surgeries registered in the NCD from January to December, 2023. Procedures were classified into four categories: open or endoscopic, and inguinal or femoral. Variables included age, sex, surgical urgency, anesthesiologist involvement, and admission type. Longitudinal trends (2011–2023) and sex-/recurrence-specific differences were also evaluated.

Results

A total of 127,139 groin hernia repairs were performed at 2,143 institutions. Inguinal hernias accounted for 96.5% of the repairs and femoral hernias accounted for 3.5%, with 56.8% of all the hernias repaired endoscopically. Emergency surgery was done more frequently for femoral hernias (44.3%) than for inguinal hernias (2.6%). Femoral hernias were more common in women, and their proportion was higher among recurrent hernias than primary hernias for both sexes. Recurrent hernia repair comprised 3.8% of the hernia surgeries for male patients and 1.9% of those for female patients. The number of endoscopic repairs increased over time, especially for bilateral hernias.

Conclusion

This is the first large-scale hernia classification study from Asia. It highlights sex- and recurrence-specific patterns and supports clinical and international registry comparisons.