Evidence map›Paper›PMID 32440714›Full record

ArticleKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2021

High prevalence of a deep lateral femoral notch sign in patients with anterior cruciate ligament (ACL) and concomitant posterior root tears of the lateral meniscus.

Daniel P Berthold, Lukas N Muench, Elmar Herbst, Felix Mayr, Vivek Chadayammuri, Andreas B Imhoff, Matthias J Feucht

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Article in Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 2 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

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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

20 citing papers in PubMed, 2 syntheses or guidelines pooled it.

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  19. [Research progress of lateral femoral notch sign in diagnosis of anterior cruciate ligament rupture].Zhongguo xiu fu chong jian wai ke za zhi = Zhongguo xiufu chongjian waike zazhi = Chinese journal of reparative and reconstructive surgery · 2021
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4 · The record

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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

7 authors.

Daniel P BertholdDepartment of Orthopaedic Sports Medicine, Technical University of Munich, Ismaninger Str. 22, 81675, Munich, Germany. daniel.berthold@tum.de.ORCID http://orcid.org/0000-0001-6630-6406
Lukas N MuenchDepartment of Orthopaedic Sports Medicine, Technical University of Munich, Ismaninger Str. 22, 81675, Munich, Germany.
Elmar HerbstDepartment of Trauma, Hand and Reconstructive Surgery, University Hospital Münster, Münster, Germany.
Felix MayrDepartment of Orthopaedic Sports Medicine, Technical University of Munich, Ismaninger Str. 22, 81675, Munich, Germany.
Vivek ChadayammuriDepartment of Orthopaedic Surgery, University of Connecticut, Farmington, CT, USA.
Andreas B ImhoffDepartment of Orthopaedic Sports Medicine, Technical University of Munich, Ismaninger Str. 22, 81675, Munich, Germany.
Matthias J FeuchtDepartment of Orthopaedic Sports Medicine, Technical University of Munich, Ismaninger Str. 22, 81675, Munich, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo determine the prevalence of a deep lateral femoral notch sign (LFNS) in magnetic resonance imaging (MRI) in patients with anterior cruciate ligament (ACL) and concomitant posterior root tears of the lateral meniscus (PLRT).

methodsA retrospective chart review was conducted to identify all patients undergoing ACL reconstruction between 2016 and 2018. Based on the arthroscopic appearance of the lateral meniscus, patients were assorted to one of three groups: isolated ACL tear (ACL-Group), ACL tear with concomitant lateral meniscus tear not involving the posterolateral root (Meniscus-Group), and ACL tear with concomitant PLRT (PLRT-Group). Incidence and depth of a LFNS on preoperative MRI was compared between the three cohorts.

results115 patients (mean age: 29.5 ± 11.3 years) were included in the study, with 58 patients (50.4%) assorted to the ACL-Group, 24 patients (20.9%) to the Meniscus-Group, and 33 patients (28.7%) to the PLRT-Group. The prevalence of a LFNS was significantly higher in the PLRT-Group (39.4%), when compared to the ACL- (5.2%) or Meniscus-Groups (25.0%; p < 0.001, respectively). Additionally, logistic regression analysis demonstrated that patients with PLRT were 5.3 times more likely to have a LFNS as compared to those without a lateral root tear (p < 0.001).

conclusionIn patients with ACL tears, the presence of a LFNS on preoperative MRI may be predictive for a PLRT. As the LFNS occurs in almost 40% of the patients with combined ACL tears and PLRT, the LFNS may be a useful secondary diagnostic finding in early MRI diagnostic. Identifying PLRT on MRI is clinically relevant, as it prevents misdiagnosis and facilitates surgical decision-making, thus avoiding subsequent delayed treatment. LEVEL OF EVIDENCE: Level IV.

Indexed as

AdolescentAdultAnterior Cruciate LigamentAnterior Cruciate Ligament InjuriesAnterior Cruciate Ligament ReconstructionFemaleFemurHumansIncidenceMagnetic Resonance ImagingMaleMenisci, TibialPrevalenceRetrospective StudiesRuptureTibial Meniscus InjuriesAnterior cruciate ligamentAnterior cruciate ligament reconstruction posterolateral meniscus root tearLateral femoral notch signLateral meniscusMagnetic resonance imaging

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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.