Evidence map›Paper›PMID 32483671›Full record

ArticleKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2020

Length-change patterns of the medial collateral ligament and posterior oblique ligament in relation to their function and surgery.

Lukas Willinger, Shun Shinohara, Kiron K Athwal, Simon Ball, Andy Williams, Andrew A Amis

Open access · hybridAbstract read
In one paragraph

Article in Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 52 papers.

0numbers the graph read from it
0cells of the map it votes in
52citing papers in PubMed
9.0field-weighted citation impact, top 1% of its field
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

52 citing papers in PubMed, 85 citations in OpenAlex.

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  8. Review
  9. Evaluation of a novel robotic testing method for stability and kinematics of total knee arthroplasty.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2025
    Article
  10. Article
  11. Collateral ligament strain is linearly related to coronal lower limb alignment: A biomechanical study.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2025
    Article
  12. Article
  13. Current trends in the medial side of the knee: not only medial collateral ligament (MCL).Journal of orthopaedics and traumatology : official journal of the Italian Society of Orthopaedics and Traumatology · 2024
    Review
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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 at 4 institutions in 3 countries.

Lukas WillingerThe Biomechanics Group, Department of Mechanical Engineering, Imperial College London, London, SW7 2AZ, UK.
Shun ShinoharaThe Biomechanics Group, Department of Mechanical Engineering, Imperial College London, London, SW7 2AZ, UK.
Kiron K AthwalThe Biomechanics Group, Department of Mechanical Engineering, Imperial College London, London, SW7 2AZ, UK.
Simon BallFortius Clinic, 17 Fitzhardinge St, London, W1H 6EQ, UK.
Andy WilliamsThe Biomechanics Group, Department of Mechanical Engineering, Imperial College London, London, SW7 2AZ, UK.
Andrew A AmisThe Biomechanics Group, Department of Mechanical Engineering, Imperial College London, London, SW7 2AZ, UK. a.amis@imperial.ac.uk.ORCID http://orcid.org/0000-0002-4489-1381
Fortius Clinic · GBImperial College London · GBHokkaido University · JPTUM Klinikum · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo define the length-change patterns of the superficial medial collateral ligament (sMCL), deep MCL (dMCL), and posterior oblique ligament (POL) across knee flexion and with applied anterior and rotational loads, and to relate these findings to their functions in knee stability and to surgical repair or reconstruction.

methodsTen cadaveric knees were mounted in a kinematics rig with loaded quadriceps, ITB, and hamstrings. Length changes of the anterior and posterior fibres of the sMCL, dMCL, and POL were recorded from 0° to 100° flexion by use of a linear displacement transducer and normalised to lengths at 0° flexion. Measurements were repeated with no external load, 90 N anterior draw force, and 5 Nm internal and 5 Nm external rotation torque applied.

resultsThe anterior sMCL lengthened with flexion (p < 0.01) and further lengthened by external rotation (p < 0.001). The posterior sMCL slackened with flexion (p < 0.001), but was lengthened by internal rotation (p < 0.05). External rotation lengthened the anterior dMCL fibres by 10% throughout flexion (p < 0.001). sMCL release allowed the dMCL to become taut with valgus rotation (p < 0.001). The anterior and posterior POL fibres slackened with flexion (p < 0.001), but were elongated by internal rotation (p < 0.001).

conclusionThe structures of the medial ligament complex react differently to knee flexion and applied loads. Structures attaching posterior to the medial epicondyle are taut in extension, whereas the anterior sMCL, attaching anterior to the epicondyle, is tensioned during flexion. The anterior dMCL is elongated by external rotation. These data offer the basis for MCL repair and reconstruction techniques regarding graft positioning and tensioning.

Indexed as

AgedBiomechanical PhenomenaCadaverFemaleHamstring MusclesHumansKnee JointLigaments, ArticularMaleMedial Collateral Ligament, KneeMiddle AgedPlastic Surgery ProceduresRange of Motion, ArticularRotationTorqueIsometryLength changeMedial collateral ligamentPosterior oblique ligamentReconstruction

Identifiers

PMID32483671
PMCPMC7669796
OpenAlexW3029319701

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.