Displacements of the tibial tuberosity. Effects of the surgical parameters.

Détails

ID Serval
serval:BIB_BCC5F165B38B
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Displacements of the tibial tuberosity. Effects of the surgical parameters.
Périodique
Clinical Orthopaedics and Related Research
Auteur(s)
Benvenuti J.F., Rakotomanana L., Leyvraz P.F., Pioletti D.P., Heegaard J.H., Genton M.G.
ISSN
0009-921X
Statut éditorial
Publié
Date de publication
10/1997
Peer-reviewed
Oui
Numéro
343
Pages
224-234
Langue
anglais
Résumé
A three-dimensional computer model is used, based on the finite element method, to investigate the effects of 1-, 1.5-, and 2-cm tibial tubercle elevations and of 0.5- and 1-cm medial displacements of the tuberosity, performed with different bone shingles. Patellar kinematics and patellofemoral interface peak pressure, between 45 degrees and 135 degrees of passive knee flexion, are compared for these different surgical parameters with those of a normal knee not surgically treated. The shingle lengths of 3, 5, 7, and 10 cm have little influence on the results. Augmenting tubercle medializations decrease the lateral peak pressure but result in an overpressure of the medial facet that is 154% of the normal peak value. With knee flexion between 45 degrees and 60 degrees, increasing tubercle elevations decreases later and medial peak pressures. With flexion of more than 60 degrees, increasing elevations decrease the lateral peak pressure, but they augment and even cause overpressure on the medial facet. An overpressure on the lateral facet also is seen in midrange knee flexion (75 degrees-90 degrees) for all tubercle elevation values. Increasing tubercle elevations and medializations appear to be the predominant parameters from a biomechanical point of view.
Mots-clé
Computer Simulation, Female, Femur/physiology, Femur/surgery, Humans, Knee Joint/physiology, Menisci, Tibial/physiology, Middle Aged, Models, Biological, Movement, Multivariate Analysis, Patella/physiology, Patella/surgery, Patellar Ligament/physiology, Pressure, Range of Motion, Articular, Rotation, Stress, Mechanical, Tibia/physiology, Tibia/surgery
Pubmed
Web of science
Création de la notice
28/01/2008 13:22
Dernière modification de la notice
20/08/2019 16:30
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