Evidence map›Paper›PMID 41758370›Full record

ArticleEuropean journal of trauma and emergency surgery : official publication of the European Trauma Society2026

Frequency and patterns of craniomaxillofacial surgery during and after COVID-19: analysis of the Japanese national database.

Yasumasa Kakei, Robert Sader, Masaya Akashi, Philipp Thoenissen

Abstract read
In one paragraph

Article in European journal of trauma and emergency surgery : official publication of the European Trauma Society, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

1 citing paper in PubMed.

  1. Maxillofacial fractures associated with electric scooter trauma: a cohort study from a national level I trauma center.European journal of trauma and emergency surgery : official publication of the European Trauma Society · 2026
    Observational
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Yasumasa KakeiDepartment of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan. ykakei@med.kobe-u.ac.jp.ORCID http://orcid.org/0000-0002-5997-514X
Robert SaderDepartment of Oral, Cranio-Maxillofacial and Plastic Facial Surgery, Goethe University Frankfurt, University Hospital, Theodor-Stern-Kai 7, 60590, Frankfurt am Main, Germany.ORCID http://orcid.org/0000-0002-0265-0301
Masaya AkashiDepartment of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan.ORCID http://orcid.org/0000-0003-0432-3299
Philipp ThoenissenDepartment of Oral, Cranio-Maxillofacial and Plastic Facial Surgery, Goethe University Frankfurt, University Hospital, Theodor-Stern-Kai 7, 60590, Frankfurt am Main, Germany.ORCID http://orcid.org/0000-0001-6032-2835

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeCraniomaxillofacial (CMF) trauma is primarily associated with high-energy injuries and constitutes a significant proportion of hospital presentations in Japan. The coronavirus disease 2019 (COVID-19) pandemic and related public health restrictions profoundly altered daily life and social behavior, potentially influencing trauma patterns and surgical interventions for CMF injuries.

methodsWe retrospectively analyzed nationwide data from the Japanese National Database, covering the period from 1 January 2014 to 31 December 2023. Inpatient and outpatient CMF surgical procedures were identified using procedural codes and categorized into pre-pandemic (2014–2019), pandemic (2020–2021), and post-pandemic recovery (2022–2023) periods. Statistical analysis included descriptive evaluation and comparative analysis across these periods.

resultsIn total, 30,398 CMF surgical procedures were recorded during the 10-year study period. The pre-pandemic period averaged 3,528.0 cases per year, which declined to 2,756.5 cases per year during the pandemic period, representing a 21.87% reduction (p < 0.001). The post-pandemic period showed partial recovery, averaging 3,358.5 cases per year, remaining 4.80% below pre-pandemic levels. The largest pandemic-period declines were observed for bilateral mandibular condylar fracture surgery (− 100%), bilateral mandibular fracture surgery (− 40.5%), and non-invasive reduction of maxillary fractures (− 43.8%). Notable recovery patterns emerged post-pandemic, with zygomatic fracture procedures surpassing pre-pandemic levels (+ 2.7%), while most other procedures remained below baseline.

conclusionThe COVID-19 pandemic significantly reduced CMF surgical procedures in Japan, with differential impacts across procedure types. The post-pandemic period reveals heterogeneous recovery patterns—some procedures exceeding pre-pandemic levels while others persistently lag—suggesting enduring changes in trauma patterns and healthcare utilization.

Indexed as

COVID-19Skull FracturesDatabases, FactualEast Asian PeopleHumansJapanRetrospective StudiesSARS-CoV-2COVID-19Craniomaxillofacial traumaFacial fracturesJapanNational databaseTrauma epidemiology

Identifiers

PMID41758370
PMCPMC12948826

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LicenceCC BY-NC-ND
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Registered trials

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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.