Influence of meniscus shape in the cross sectional plane on the knee contact mechanics

Abstract We present a three dimensional finite element analysis of stress distribution and menisci deformation in the human knee joint. The study is based on the Open Knee model with the geometry of the lateral meniscus which shows some degenerative disorders. The nonlinear analysis of the knee join...

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Bibliographic Details
Published in:Journal of biomechanics 2015-06, Vol.48 (8), p.1356-1363
Main Authors: Łuczkiewicz, Piotr, Daszkiewicz, Karol, Witkowski, Wojciech, Chróścielewski, Jacek, Zarzycki, Witold
Format: Article
Language:English
Subjects:
Arthritis
Biomechanical Phenomena
Cartilage, Articular - pathology
Cartilage, Articular - physiopathology
Computer Simulation
Contact
Cross sections
Deformation
Finite Element Analysis
Geometry
Humans
Imaging, Three-Dimensional
Knee
Knee - physiopathology
Knee Injuries - pathology
Knee Injuries - physiopathology
Knees
Ligaments
Load
Mathematical models
Meniscal extrusion
Menisci
Menisci, Tibial - pathology
Menisci, Tibial - physiopathology
Meniscus geometry
Models, Biological
Open Knee model
Physical Medicine and Rehabilitation
Planes
Resultants
Slope angle
Studies
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Summary:Abstract We present a three dimensional finite element analysis of stress distribution and menisci deformation in the human knee joint. The study is based on the Open Knee model with the geometry of the lateral meniscus which shows some degenerative disorders. The nonlinear analysis of the knee joint under compressive axial load is performed. We present results for intact knee, knee with complete radial posterior meniscus root tear and knee with total meniscectomy of medial or lateral meniscus. We investigate how the meniscus shape in the cross sectional plane influences knee-joint mechanics by comparing the results for flat (degenerated) lateral and normal medial meniscus. Specifically, the deformation of the menisci in the coronal plane and the corresponding stress values in cartilages are studied. By analysing contact resultant force acting on the menisci in axial plane we have shown that restricted extrusion of the torn lateral meniscus can be attributed to small slope of its cross section in the coronal plane. Additionally, the change of the contact area and the resultant force acting on the menisci as the function of compressive load are investigated.
ISSN:0021-9290
1873-2380
DOI:10.1016/j.jbiomech.2015.03.002