Abstract
Increased cost and complexity associated with orthopaedic surgeries has led to advancements in degradable materials. Degradable metals like magnesium have shown great promise as magnesium based alloys provide the strength of metals but the degradability of polymers. As the development of degradable magnesium alloys expands there is a significant need for simplified computational models that can account for the numerous mechanical changes associated with degradation. The current study examined initial in silico models of Magnesium samples to gain insight on how degradation impacts mechanical performance over time. Models of magnesium rods were created and analyzed using the finite element analysis functionality in a commercially available software package.  SolidWorks is widely known for its design capabilities and generation of 3D solid models; however its analyses capabilities would be useful for such a smart material, like magnesium.  Therefore, this work explores the analysis capabilities of SolidWorks, for degradable magnesium in a skeletal environment.
Highlights
Increased cost and complexity associated with orthopaedic surgeries has led to advancements in degradable materials
The purpose of this study was to use the finite element functionality within SolidWorks to model of Mg degradation and determine changes the mechanical integrity, of Mg samples, over time
A 15 mm long, 5.2 mm diameter rod was modeled in a version of 2012, Dassault Systèmes Corporation; Waltham, Massachusetts, USA using the extrusion command. These specific dimensions for the cylinder were used because they are close to those used for Anterior Cruciate Ligament (ACL) interference screws, an orthopaedic device that would benefit from degradable technology, but requires significant mechanical strength
Summary
Increased cost and complexity associated with orthopaedic surgeries has led to advancements in degradable materials. In spite of the promise of these alloys, concerns popular in medical devices This degradability eliminates remain regarding the material’s mechanical integrity the need for removal surgeries and reduces interference after implantation. Procedures requires devices that provide a precise level degradable magnesium (Mg) based alloys appear mechanical support for the healing of bone and/or other to be well suited for orthopaedic device applications tissues. Gastaldi et al [5] proposed a corrosion model based on continuum damage mechanics (CDM) to simulate Mg corrosion experienced by stents. Even with these successful simulations, significant difficulty in modeling Mg degradation exists. The purpose of this study was to use the finite element functionality within SolidWorks to model of Mg degradation and determine changes the mechanical integrity, of Mg samples, over time
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