title: Dynamic finite element analysis of mobile bearing type knee prosthesis under deep flexional motion.
abstract: The primary objective of this study is to distinguish between mobile bearing and fixed bearing posterior stabilized knee prostheses in the mechanics performance using the finite element simulation. Quantifying the relative mechanics attributes and survivorship between the mobile bearing and the fixed bearing prosthesis remains in investigation among researchers. In the present study, 3-dimensional computational model of a clinically used mobile bearing PS type knee prosthesis was utilized to develop a finite element and dynamic simulation model. Combination of displacement and force driven knee motion was adapted to simulate a flexion motion from 0° to 135° with neutral, 10°, and 20° internal tibial rotation to represent deep knee bending. Introduction of the secondary moving articulation in the mobile bearing knee prosthesis has been found to maintain relatively low shear stress during deep knee motion with tibial rotation.
authors.affiliation: Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, 6-1 Kasuga-koen, Kasuga 816-8580, Japan ; Faculty of Mechanical Engineering, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia.
authors.forename: Mohd Afzan Mohd
authors.initials: MA
authors.lastname: Anuar
authors.affiliation: Research Institute for Applied Mechanics, Kyushu University, 6-1 Kasuga-koen, Kasuga 816-8580, Japan.
authors.forename: Mitsugu
authors.initials: M
authors.lastname: Todo
authors.affiliation: Sugioka Memorial Hospital, 3-6-1 Kashiiteriha, Higashi Ward, Fukuoka, Fukuoka Prefecture 813-0017, Japan.
authors.forename: Ryuji
authors.identifier: 0000-0003-3865-7684
authors.initials: R
authors.lastname: Nagamine
authors.affiliation: Biomechanics Research Center, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
authors.forename: Shunji
authors.initials: S
authors.lastname: Hirokawa
mesh_terms: D001696:Biomechanical Phenomena; D003198:Computer Simulation; D006801:Humans; D007717:Knee / Q000502:physiology; D007720:Knee Prosthesis; D016059:Range of Motion, Articular; D012399:Rotation