Evidence map›Paper›PMID 33413656›Full record

ReviewKnee surgery & related research2021

A systematic review comparing the results of early vs delayed ligament surgeries in single anterior cruciate ligament and multiligament knee injuries.

Seong Hwan Kim, Sang-Jin Han, Yong-Beom Park, Dong-Hyun Kim, Han-Jun Lee, Nicolas Pujol

Abstract readReview
In one paragraph

Review in Knee surgery & related research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 1 pooled it
–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

23 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  6. Delayed Surgery and Adenosine, Lidocaine, and MgThe American journal of sports medicine · 2025
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  7. Outcomes of acute versus delayed multi-ligament knee injury reconstruction: A retrospective analysis with mean 3.6-year follow-up.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2025
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  13. Delaying anterior cruciate ligament reconstruction for more than 3 or 6 months results in lower risk of revision surgery.Journal of orthopaedics and traumatology : official journal of the Italian Society of Orthopaedics and Traumatology · 2024
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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

6 authors.

Seong Hwan KimDepartment of Orthopedic Surgery, Hyundae General Hospital, Chung-Ang University College of Medicine, Jinjeop-eup, Namyangju-si, Gyunggi-do, Republic of Korea.
Sang-Jin HanDepartment of Orthopedic Surgery, Hyundae General Hospital, Chung-Ang University College of Medicine, Jinjeop-eup, Namyangju-si, Gyunggi-do, Republic of Korea.
Yong-Beom ParkDepartment of Orthopedic Surgery, Chung-Ang University Hospital, Chung-Ang University College of Medicine, 102 Heukseok-ro, Dongjak-gu, Seoul, 06973, Republic of Korea.
Dong-Hyun KimDepartment of Orthopedic Surgery, Chung-Ang University Hospital, Chung-Ang University College of Medicine, 102 Heukseok-ro, Dongjak-gu, Seoul, 06973, Republic of Korea.
Han-Jun LeeDepartment of Orthopedic Surgery, Hyundae General Hospital, Chung-Ang University College of Medicine, Jinjeop-eup, Namyangju-si, Gyunggi-do, Republic of Korea.
Nicolas PujolDepartment of Orthopedic Surgery, Centre Hospitalier de Versailles, Le Chesnay, France. npujol@ch-versailles.fr.ORCID http://orcid.org/0000-0002-2013-8926

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThe purpose of this study was to compare clinical outcomes and incidence of concomitant injuries in patients undergoing early vs delayed surgical treatment of single anterior cruciate ligament (ACL) injury and multiligament knee injury (MLKI).

methodsA literature search using PubMed, Embase, the Cochrane Library, the Cumulative Index to Nursing and Allied Health, and Scopus from their inception to April 30, 2020 was conducted. Studies with levels I to IV evidence reporting the incidence of meniscus or cartilage injury according to early vs delayed surgery in single ACL injuries and MLKIs were included. In the meta-analysis, data based on the number of meniscus and cartilage injuries were extracted and pooled. Lysholm and Tegner scores were analyzed using two-sample Z-tests to calculate the non-weighted mean difference (NMD). A meta-regression analysis was also performed to determine the effect of single ACL injury and MLKI/study design.

resultsSixteen studies on single ACL injury and 14 studies on MLKI were included in this analysis. In the analysis, there were significant decreases in Lysholm score (NMD - 5.3 [95% confidence interval (CI) - 7.37 to - 3.23]) and Tegner score (NMD - 0.25 [95% CI - 0.45 to - 0.05]) and increases in risk of meniscus tear (odds ratio [OR] 1.73 [95% CI 1.1-2.73], p = 0.01) and cartilage injury (OR 2.48 [95% CI 1.46-4.2], p = 0.0007) in the delayed surgery group regardless of single ACL injury or MLKI. The result of the meta-regression analysis indicated that single ACL injury and MLKI/study design were not significant moderators of overall heterogeneity (p > 0.05).

conclusionsOur study suggests that delayed ACL surgery significantly resulted in a higher risk of meniscus tear and cartilage injury and decreased Lysholm and Tegner scores compared to early ACL surgery. The Lysholm scores in the delayed MLKI surgery group were significantly decreased, but the risks of meniscus tear and cartilage injury in the delayed MLKI surgery group remained unclear. LEVEL OF EVIDENCE: Level III, meta-analysis.

Indexed as

Anterior cruciate ligament injuryDelayed surgeryEarly surgeryMeta-analysisMultiligament knee injury

Identifiers

PMID33413656
PMCPMC7792064

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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.