Journal
JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART B-APPLIED BIOMATERIALS
Volume 92B, Issue 1, Pages 178-188Publisher
WILEY
DOI: 10.1002/jbm.b.31504
Keywords
bone in-growth; fixation; randomization; mechanical properties; laser
Funding
- Engineering and Physical Sciences Research Council (EPSRC)
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In this study, the unit cell approach, which has previously been demonstrated as a method of manufacturing porous components suitable for use as orthopedic implants, has been further developed to include randomized structures. These random structures may aid the bone in-growth process because of their similarity in appearance to trabecular bone and are shown to carry legacy properties that can be related back to the original unit cell on which they are ultimately based. In addition to this, it has been shown that randomization improves the mechanical properties of regular unit cell structures, resulting in anticipated improvements to both implant functionality and longevity. The study also evaluates the effect that a post process sinter cycle has on the components, outlines the improved mechanical properties that are attainable, and also the changes in both the macro and microstructure that occur. (C) 2009 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater 92B: 178-188. 2009
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