PMID: 3771587Jan 1, 1986Paper

Epiphyseal-based designs for tibial plateau components--I. Stress analysis in the frontal plane

Journal of Biomechanics
R VasuG S Beaupré

Abstract

Two-dimensional, finite element studies were conducted of the proximal tibia before and after joint arthroplasty. Equivalent-thickness models projected onto the mid-frontal plane were created for the natural, proximal tibia and for the proximal tibia with four different types of tibial plateau components. All components simulated bony ingrowth fixation, i.e. no cement layer existed between component and bone. In addition, the interface between component and bone was assumed to be intimately connected, representing complete bony ingrowth and a rigid state of fixation. Loads consisted of bi-condylar and uni-condylar forces. Results indicated that conventional plateau designs with central posts or multiple pegs led to higher stress magnitudes in the trabecular bone near the distal ends of the post/pegs and stress shielding at more proximal locations. A design without posts or pegs whose interface geometry mimics the epiphyseal plate minimizes bone stress shielding. An implant consisting of separate components covering each condyle was found effective in limiting component tilting and the consequent tensile stresses caused by non-symmetrical, uni-condylar loading.

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Citations

Jun 21, 2001·Clinical Biomechanics·P J Prendergast
Mar 27, 2001·Computer Methods in Biomechanics and Biomedical Engineering·A. Hashemi, A. Shirazi-Adl
Jan 18, 2007·Journal of Biomechanical Engineering·A Perillo-Marcone, M Taylor
Oct 1, 2010·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Jowene WongDarryl D D'Lima
Oct 5, 2010·Ultrasound in Medicine & Biology·Jose B VolponMarcelo E Beletti
Apr 23, 2003·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·P AngeleB Johnstone
Jun 5, 2004·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Jeremy J Mao, Hyun-Duck Nah
May 12, 2005·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·T SawatariT Torisu
Mar 1, 1990·Acta Physiologica Scandinavica·C S TungT H Svensson
Mar 1, 1995·Pharmacology & Toxicology·M NisellT H Svensson
Nov 30, 2005·Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine·D S BarkerL Ryd

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