Biomechanical Approach of Radius of Curvature on the UHMWPE Core in Artificial Intervertebral Disc Using FE Analysis

Abstract:

The research of stress distributions and the structural deformation at the sliding core in artificial intervertebral disc under the dorsiflexion is becoming more significant. This research analyzes the finite element model of sliding core and evaluates the effect of radius of curvature and the friction coefficient at the sliding core on von-Mises stress and the contact pressure. New Models of the artificial intervertebral disc are suggested by the results of the sliding core is evaluated by the comparison of that of SB Charité III. Based on the above facts, the optimized radius curvature of the sliding core is also suggested.

• Periodical: Key Engineering Materials (Volumes 342-343)
• Pages: 709-712
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.342-343.709
• Online since: July 2007
• Authors: Cheol Woong Kim, Bong Su Kang, Dong Joon Oh
• Keywords: Artificial Intervertebral Disc, Dorsiflexion, Endplate, Fatigue Failure, Radius of Curvature, Sliding Core, Ultra-High Molecular Weight Polyethylene UHMWPE, Von Mises Stress

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