How plate positioning impacts the biomechanics of the open wedge tibial osteotomy; a finite element analysis.

Details

Serval ID
serval:BIB_227EB695E1C9
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
How plate positioning impacts the biomechanics of the open wedge tibial osteotomy; a finite element analysis.
Journal
Computer Methods in Biomechanics and Biomedical Engineering
Author(s)
Blecha L.D., Zambelli P.Y., Ramaniraka N.A., Bourban P.E., Månson J.A., Pioletti D.P.
ISSN
1025-5842
Publication state
Published
Issued date
10/2005
Peer-reviewed
Oui
Volume
8
Number
5
Pages
307-313
Language
english
Notes
Publication types: Comparative Study
Abstract
A numerical model of the medial open wedge tibial osteotomy based on the finite element method was developed. Two plate positions were tested numerically. In a configuration, (a), the plate was fixed in a medial position and (b) in an anteromedial position. The simulation took into account soft tissues preload, muscular tonus and maximal gait load.The maximal stresses observed in the four structural elements (bone, plate, wedge, screws) of an osteotomy with plate in medial position were substantially higher (1.13-2.8 times more) than those observed in osteotomy with an anteromedial plate configuration. An important increase (1.71 times more) of the relative micromotions between the wedge and the bone was also observed. In order to avoid formation of fibrous tissue at the bone wedge interface, the osteotomy should be loaded under 18.8% (approximately 50 kg) of the normal gait load until the osteotomy interfaces union is achieved.
Keywords
Arthroplasty, Replacement, Knee/instrumentation, Arthroplasty, Replacement, Knee/methods, Biomechanics, Bone Plates, Bone Screws, Computer Simulation, Equipment Failure Analysis/methods, Finite Element Analysis, Fracture Fixation, Internal/instrumentation, Fracture Fixation, Internal/methods, Humans, Models, Biological, Movement, Osteotomy/instrumentation, Osteotomy/methods, Prosthesis Implantation/methods, Stress, Mechanical, Tibia/physiopathology, Tibia/surgery, Weight-Bearing
Pubmed
Create date
28/01/2008 13:29
Last modification date
20/08/2019 13:59
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