Area Moment of Inertia for Comparison of Implant Cross-Sectional Geometry and Bending Stiffness

P. Muir; K. A. Johnson; M. D. Markel

doi:10.1055/s-0038-1632446

Veterinary and Comparative Orthopaedics and Traumatology, Table of Contents

Vet Comp Orthop Traumatol 1995; 08(03): 146-152
DOI: 10.1055/s-0038-1632446

Review Article

Schattauer GmbH

Area Moment of Inertia for Comparison of Implant Cross-Sectional Geometry and Bending Stiffness

Authors

P. Muir

¹From the Comparative Orthopaedic Research Laboratory, University of Wisconsin-Madison, School of Veterinary Medicine, Department of Surgical Sciences, Madison, Wisconsin, USA
K. A. Johnson

¹From the Comparative Orthopaedic Research Laboratory, University of Wisconsin-Madison, School of Veterinary Medicine, Department of Surgical Sciences, Madison, Wisconsin, USA
M. D. Markel

¹From the Comparative Orthopaedic Research Laboratory, University of Wisconsin-Madison, School of Veterinary Medicine, Department of Surgical Sciences, Madison, Wisconsin, USA

Abstract

Area moment of inertia for an object can be calculated by use of mathematical equations, and is defined by the dimensions of the object. Area moment of inertia and modulus of elasticity are principal factors determining bending stiffness. Because the majority of veterinary orthopaedic implants are made of 316L stainless steel, and therefore have a similar modulus of elasticity, comparison of area moment of inertia for different implants provides an estimate of relative bending stiffness and can assist implant selection for a particular fracture. Knowledge of this parameter may help avoid treatment complications, such as implant failure.

Keywords

Area moment of inertia - Bending stiffness - Orthopaedic implants

Full Text

References

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