Imperial College London

ProfessorAndrewAmis

Faculty of EngineeringDepartment of Mechanical Engineering

Professor
 
 
 
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Contact

 

+44 (0)20 7594 7062a.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{Inderhaug:2018:10.1177/0363546518790248,
author = {Inderhaug, E and Stephen, JM and Williams, A and Amis, AA},
doi = {10.1177/0363546518790248},
journal = {American Journal of Sports Medicine},
pages = {2922--2928},
title = {Effect of anterolateral complex sectioning and tenodesis on patellar kinematics and patellofemoral joint contact pressures},
url = {http://dx.doi.org/10.1177/0363546518790248},
volume = {46},
year = {2018}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - Background:Anterolateral complex injuries are becoming more recognized. While these are known to affect tibiofemoral mechanics, it is not known how they affect patellofemoral joint behavior.Purpose:To determine the effect of (1) sectioning the anterolateral complex and (2) performing a MacIntosh tenodesis under various conditions on patellofemoral contact mechanics and kinematics.Study Design:Controlled laboratory study.Methods:Eight fresh-frozen cadaveric knees were tested in a customized rig, with the femur fixed and tibia free to move, with optical tracking to record patellar kinematics and with thin pressure sensors to record patellofemoral contact pressures at 0°, 30°, 60°, and 90° of knee flexion. The quadriceps and iliotibial tract were loaded with 205 N throughout testing. Intact and anterolateral complex–sectioned states were tested, followed by 4 randomized tenodeses applying 20- and 80-N graft tension, each with the tibia in its neutral intact alignment or left free to rotate. Statistical analyses were undertaken with repeated measures analysis of variance, Bonferroni post hoc analysis, and paired samples t tests.Results:Patellar kinematics and contact pressures were not significantly altered after sectioning of the anterolateral complex (all: P > .05). Similarly, they were not significantly different from the intact knee in tenodeses performed when fixed tibial rotation was combined with 20- or 80-N graft tension (all: P > .05). However, grafts tensioned with 20 N and 80 N while the tibia was free hanging resulted in significant increases in lateral patellar tilt (P < .05), and significantly elevated lateral peak patellofemoral pressures (P < .05) were observed for 80 N.Conclusion:This work did not find that an anterolateral injury altered patellofemoral mechanics or kinematics, but adding a lateral tenodesis can elevate lateral contact pressures and induce lateral patellar tilting if the tibia is pulled into external ro
AU - Inderhaug,E
AU - Stephen,JM
AU - Williams,A
AU - Amis,AA
DO - 10.1177/0363546518790248
EP - 2928
PY - 2018///
SN - 0363-5465
SP - 2922
TI - Effect of anterolateral complex sectioning and tenodesis on patellar kinematics and patellofemoral joint contact pressures
T2 - American Journal of Sports Medicine
UR - http://dx.doi.org/10.1177/0363546518790248
UR - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000446347200018&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR - http://hdl.handle.net/10044/1/69250
VL - 46
ER -