Author(s)

M.D. Nowak

Abstract

Linear versus nonlinear material modeling of the scapholunate ligament of the human wrist M.D. Nowak Department of Orthopaedics, University Connecticut Health Center, Farmington, Department of Civil Engineering, University ABSTRACT Current computer studies utilize linear material properties when modeling human ligaments. This study demonstrates the need for nonlinear property analysis, and the feasibility of such an approach to model the scapholunate ligament of the human wrist in three dimensions. INTRODUCTION To date, computer simulations of human joints have utilized linear mechanical properties to model ligament behavior. These models include both finite element analyses and rigid body dynamic models. The linear mechanical properties have been based either on the ligament ultimate strength, or the upper quasilinear portion of the force - elongation curve. To model ligament material properties, mechanical testing to failure has been made of

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