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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

P. Muir
1   From the Comparative Orthopaedic Research Laboratory, University of Wisconsin-Madison, School of Veterinary Medicine, Department of Surgical Sciences, Madison, Wisconsin, USA
,
K. A. Johnson
1   From the Comparative Orthopaedic Research Laboratory, University of Wisconsin-Madison, School of Veterinary Medicine, Department of Surgical Sciences, Madison, Wisconsin, USA
,
M. D. Markel
1   From the Comparative Orthopaedic Research Laboratory, University of Wisconsin-Madison, School of Veterinary Medicine, Department of Surgical Sciences, Madison, Wisconsin, USA
› Author Affiliations
Further Information

Publication History

Received for publication 09 November 1994

Publication Date:
10 February 2018 (online)

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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
 

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