Evidence map›Paper›PMID 33912979›Full record

ArticleKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2022

A 2D video-analysis scoring system of 90° change of direction technique identifies football players with high knee abduction moment.

Francesco Della Villa, Stefano Di Paolo, Dario Santagati, Edoardo Della Croce, Nicola Francesco Lopomo, Alberto Grassi, Stefano Zaffagnini

Abstract read
In one paragraph

Article in Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing 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

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

  1. Pooled it
  2. Review
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  7. Boosting the clinical use of ground reaction forces in anterior cruciate ligament injury prevention: The 'CUTtheACL' study.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2025
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  8. Review
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  18. Current trends in the anterior cruciate ligament part II: evaluation, surgical technique, prevention, and rehabilitation.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2022
    Review
  19. Article
  20. A 2D qualitative movement assessment of a deceleration task detects football players with high knee joint loading.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2021
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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

7 authors.

Francesco Della VillaEducation and Research Department, Isokinetic Medical Group, FIFA Medical Centre of Excellence, Bologna, Italy.ORCID https://orcid.org/0000-0001-9379-6666
Stefano Di PaoloDepartment for Life Quality Studies QUVI, Università Di Bologna, Via Giulio Cesare Pupilli, 1, 40136, Bologna, BO, Italy. stefano.dipaolo@ior.it.ORCID http://orcid.org/0000-0002-1761-7352
Dario SantagatiEducation and Research Department, Isokinetic Medical Group, FIFA Medical Centre of Excellence, Bologna, Italy.
Edoardo Della CroceEducation and Research Department, Isokinetic Medical Group, FIFA Medical Centre of Excellence, Bologna, Italy.
Nicola Francesco LopomoDepartment of Information Engineering, University of Brescia, Brescia, Italy.
Alberto Grassi2nd Orthopaedic and Traumatologic Clinic, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy.
Stefano Zaffagnini2nd Orthopaedic and Traumatologic Clinic, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeAbnormal joint biomechanics and poor neuromuscular control are modifiable risk factors for Anterior Cruciate Ligament (ACL) injury. Although 3D motion capture is the gold standard for the biomechanical evaluation of high-speed multidirectional movements, 2D video analysis is a growing-interest alternative because of its higher cost-effectiveness and interpretability. The aim of the present study was to explore the possible association between a 2D evaluation of a 90° change of direction (COD) and the KAM measured with gold standard 3D motion analysis.

methodsThirty-four competitive football (soccer) players (age 22.8 ± 4.1, 18 male and 16 females) were enrolled. Each athlete performed a series of pre-planned 90° COD at the maximum speed possible in a laboratory equipped with artificial turf. 3D motion analysis was recorded using 10 stereophotogrammetric cameras, a force platform, and three high-speed cameras. The 2D evaluation was performed through a scoring system based on the video analysis of frontal and sagittal plane joint kinematics. Five scoring criteria were adopted: limb stability (LS), pelvis stability (PS), trunk stability (TS), shock absorption (SA), and movement strategy (MS). For each criterion, a sub-score of 0/2 (non-adequate), 1/2 (partially adequate), or 2/2 (adequate) was attributed to the movement, based on objective measurements. The intra-rater and inter-rater reliability were calculated for each criterion and the total score. The Knee Abduction Moment (KAM) was extracted from the 3D motion analysis and grouped according to the results of the 2D evaluation.

resultsExcellent intra-rater reliability (ICC > 0.88) and good-to-excellent inter-rater reliability (ICC 0.68-0.92) were found. Significantly higher KAM was found for athletes obtaining a 0/2 score compared to those obtaining a 2/2 score in all the sub-criteria and the total score (20-47% higher, p < 0.05). The total score and the LS score showed the best discriminative power between the three groups.

conclusionThe 2D video-analysis scoring system here described was a simple and effective tool to discriminate athletes with high and low KAM in the assessment of a 90° COD and could be a potential method to identify athletes at high risk of non-contact ACL injury. LEVEL OF EVIDENCE: IV.

Indexed as

Anterior Cruciate Ligament InjuriesSoccerBiomechanical PhenomenaFemaleHumansKnee JointMaleReproducibility of Results2D video analysisACLACL injury preventionCut maneuverReturn to sport

Identifiers

PMID33912979
PMCPMC9568485

What OpenQuestion holds

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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.