Evidence map›Paper›PMID 41995980›Full record

ArticleHernia : the journal of hernias and abdominal wall surgery2026

Long-term trends and surgical patterns in recurrent groin hernia repair in Japan: insights from the National Clinical Database (2022-2024).

Masanori Sato, Hiroyuki Yamamoto, Saseem Poudel, Itsuro Nagae, Taketo Matsubara, Tatsuya Tazaki, Tsuyoshi Takagi, Ken Shirabe, Hideki Ueno, Takehiro Hachisuka and 1 more

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Article in Hernia : the journal of hernias and abdominal wall surgery, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

What it found

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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

11 authors.

Masanori SatoThe Hernia Registry Committee, the Japanese Hernia Society, Tokyo, Japan. msnrsato@hama-med.ac.jp.ORCID http://orcid.org/0000-0003-1532-6743
Hiroyuki YamamotoDepartment of Healthcare Quality Assessment, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
Saseem PoudelThe Hernia Registry Committee, the Japanese Hernia Society, Tokyo, Japan.
Itsuro NagaeThe Hernia Registry Committee, the Japanese Hernia Society, Tokyo, Japan.
Taketo MatsubaraThe Hernia Registry Committee, the Japanese Hernia Society, Tokyo, Japan.
Tatsuya TazakiThe Hernia Registry Committee, the Japanese Hernia Society, Tokyo, Japan.
Tsuyoshi TakagiThe Hernia Registry Committee, the Japanese Hernia Society, Tokyo, Japan.
Ken ShirabeThe Japanese Society of Gastroenterological Surgery, Tokyo, Japan.
Hideki UenoDatabase Committee, The Japanese Society of Gastroenterological Surgery, Tokyo, Japan.
Takehiro HachisukaThe Hernia Registry Committee, the Japanese Hernia Society, Tokyo, Japan.
Kyosuke MiyazakiThe Hernia Registry Committee, the Japanese Hernia Society, Tokyo, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeLong-term follow-up after groin hernia repair is inherently challenging, and procedure-based registries do not directly capture true recurrence rates. Using the hernia-specific data collection of the National Clinical Database (NCD), which records detailed information at the time of surgery for recurrence, this study aimed to clarify the timing and hernia types of surgically treated recurrent groin hernias, including very long-term reoperations following childhood repair.

methodsRecurrence-related analyses were conducted using the hernia-specific data collection of the NCD. The analyses focused on annual surgical volumes of primary and recurrent groin hernia repair, the timing of reoperation and hernia type at reoperation among recurrent cases, and a predefined subanalysis of very long-term reoperations following childhood hernia repair.

resultsRecurrent surgeries accounted for 3.6–3.8% of all registered lesions each year (47,753 in 2022; 53,389 in 2023; and 56,140 in 2024). In men, medial inguinal hernias predominated among recurrent lesions, whereas femoral hernias were disproportionately frequent in women. Reoperations most commonly observed within two years but were also observed long after primary repair, including after mesh placement. Among patients with childhood repair, most reoperations occurred after age 60, predominantly for medial inguinal hernias, suggesting adult-type hernia development rather than true postoperative recurrence.

conclusionThis large-scale, registry-based analysis delineates characteristic mid- to long-term patterns of surgically treated groin hernia recurrence and provides the first detailed evaluation of timing and hernia type following pediatric repair.

Indexed as

Hernia, FemoralHernia, InguinalHerniorrhaphyReoperationAdolescentAdultAgedChildChild, PreschoolDatabases, FactualFemaleHumansJapanMaleMiddle AgedRecurrenceGroin hernia repairLarge scale dataLong term recurrenceNational registryPrognosis after pediatric hernia repairSurgery for recurrence

Identifiers

PMID41995980

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.