Imperial College London

Angela Kedgley

Faculty of EngineeringDepartment of Bioengineering

Senior Lecturer
 
 
 
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Contact

 

+44 (0)20 7594 0747a.kedgley Website

 
 
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Location

 

514BBuilding E - Sir Michael UrenWhite City Campus

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Summary

 

Publications

Citation

BibTex format

@article{Kedgley:2019:10.1007/s00167-018-5090-4,
author = {Kedgley, AE and Saw, TH and Segal, NA and Hansen, UN and Bull, AMJ and Masouros, SD},
doi = {10.1007/s00167-018-5090-4},
journal = {Knee Surgery, Sports Traumatology, Arthroscopy},
pages = {206--214},
title = {Predicting meniscal tear stability across knee-joint flexion using finite-element analysis},
url = {http://dx.doi.org/10.1007/s00167-018-5090-4},
volume = {27},
year = {2019}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - Purpose: To analyse the stress distribution through longitudinal and radial meniscal tears in three tear locations in weight-bearing conditions and use it to ascertain the impact of tear location and type on the potential for healing of meniscal tears. Methods: Subject-specific finite-element models of a healthy knee under static loading at 0°, 20°, and 30° knee flexion were developed from unloaded magnetic resonance images and weight-bearing, contrast-enhanced computed tomography images. Simulations were then run after introducing tears into the anterior, posterior, and midsections of the menisci. Results: Absolute differences between the displacements of anterior and posterior segments modelled in the intact state and those quantified from in vivo weight-bearing images were less than 0.5 mm. There were tear-location-dependent differences between hoop stress distributions along the inner and outer surfaces of longitudinal tears; the longitudinal tear surfaces were compressed together to the greatest degree in the lateral meniscus and were most consistently in compression on the midsections of both menisci. Radial tears resulted in an increase in stress at the tear apex and in a consistent small compression of the tear surfaces throughout the flexion range when in the posterior segment of the lateral meniscus. Conclusions: Both the type of meniscal tear and its location within the meniscus influenced the stresses on the tear surfaces under weight bearing. Results agree with clinical observations and suggest reasons for the inverse correlation between longitudinal tear length and healing, the inferior healing ability of medial compared with lateral menisci, and the superior healing ability of radial tears in the posterior segment of the lateral meniscus compared with other radial tears. This study has shown that meniscal tear location in addition to type likely plays a crucial role in dictating the success of non-operative treatment of the menisci. T
AU - Kedgley,AE
AU - Saw,TH
AU - Segal,NA
AU - Hansen,UN
AU - Bull,AMJ
AU - Masouros,SD
DO - 10.1007/s00167-018-5090-4
EP - 214
PY - 2019///
SN - 0942-2056
SP - 206
TI - Predicting meniscal tear stability across knee-joint flexion using finite-element analysis
T2 - Knee Surgery, Sports Traumatology, Arthroscopy
UR - http://dx.doi.org/10.1007/s00167-018-5090-4
UR - https://link.springer.com/article/10.1007%2Fs00167-018-5090-4
UR - http://hdl.handle.net/10044/1/62993
VL - 27
ER -