Imperial College London
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ProfessorAndrewAmis

Faculty of Engineering, Department of Mechanical Engineering

Professor
 
 
 
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Contact

 

+44 (0)7722 225 409a.amis

 
 
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Assistant

 

Ms Fabienne Laperche +44 (0)20 7594 7033

 
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Location

 

713City and Guilds BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Amis:2020:10.1007/s00167-020-06050-0,
author = {Amis, A and Willinger, L and Shinohara, S and Athwal, K and Ball, S and Williams, A},
doi = {10.1007/s00167-020-06050-0},
journal = {Knee Surgery Sports Traumatology Arthroscopy},
pages = {3720--3732},
title = {Length change patterns of the medial collateral ligament and posterior oblique ligament in relation to their function and surgery},
url = {http://dx.doi.org/10.1007/s00167-020-06050-0},
volume = {28},
year = {2020}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - 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.
AU  - Amis,A
AU  - Willinger,L
AU  - Shinohara,S
AU  - Athwal,K
AU  - Ball,S
AU  - Williams,A
DO  - 10.1007/s00167-020-06050-0
EP  - 3732
PY  - 2020///
SN  - 0942-2056
SP  - 3720
TI  - Length change patterns of the medial collateral ligament and posterior oblique ligament in relation to their function and surgery
T2  - Knee Surgery Sports Traumatology Arthroscopy
UR  - http://dx.doi.org/10.1007/s00167-020-06050-0
UR  - https://link.springer.com/article/10.1007%2Fs00167-020-06050-0
UR  - http://hdl.handle.net/10044/1/79926
VL  - 28
ER  -
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