Effects of the posterior cruciate ligament reconstruction on the biomechanics of the knee joint: a finite element analysis.

Détails

ID Serval
serval:BIB_7CBFEE630661
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Effects of the posterior cruciate ligament reconstruction on the biomechanics of the knee joint: a finite element analysis.
Périodique
Clinical Biomechanics
Auteur(s)
Ramaniraka N.A., Terrier A., Theumann N., Siegrist O.
ISSN
0268-0033
Statut éditorial
Publié
Date de publication
05/2005
Peer-reviewed
Oui
Volume
20
Numéro
4
Pages
434-442
Langue
anglais
Notes
Publication types: Comparative Study
Résumé
BACKGROUND: Previous experimental studies have been conducted to evaluate the biomechanical effects of posterior cruciate ligament reconstruction; but no consensus has been reached on the preferred method of reconstruction. METHODS: The 3D finite element mesh of a knee joint was reconstructed from computed tomography and magnetic resonance images. The ligaments were considered as hyperelastic materials. The tibiofemoral and patellofemoral joints were modeled with large sliding contact elements. The 3D model was used to simulate knee flexion from 0 degrees to 90 degrees in four cases: a knee with a "native" posterior cruciate ligament, a resected posterior cruciate ligament, a reconstructed single graft posterior cruciate ligament, and a reconstructed double graft posterior cruciate ligament. FINDINGS: A resected posterior cruciate ligament induced high compressive forces in the medial tibiofemoral and patellofemoral compartments. The pressures generated in the tibiofemoral and patellofemoral compartments were nearly the same for the two reconstruction techniques (single graft and double graft). The single graft resulted in lower tensile stresses inside the graft than for the double graft. INTERPRETATION: Firstly, a resected posterior cruciate ligament should be replaced to avoid excessive compressive forces, which are a source of cartilage degeneration. Secondly, the two types of posterior cruciate ligament reconstruction techniques partially restored the biomechanics of the knee in flexion, e.g. contact pressures were restored for pure flexion of the knee. The reconstruction techniques therefore partially restore the biomechanics of the knee in flexion. A double graft reconstruction is subjected to the highest tensile stresses.
Mots-clé
Compressive Strength, Computer Simulation, Diagnosis, Computer-Assisted/methods, Finite Element Analysis, Humans, Knee Joint/physiopathology, Knee Joint/surgery, Models, Biological, Posterior Cruciate Ligament/physiopathology, Posterior Cruciate Ligament/surgery, Reconstructive Surgical Procedures/methods, Stress, Mechanical, Therapy, Computer-Assisted/methods, Treatment Outcome, Weight-Bearing
Pubmed
Web of science
Création de la notice
11/04/2008 12:01
Dernière modification de la notice
20/08/2019 14:38
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