Open AccessNext Generation Orthopaedic Implants by Additive Manufacturing Using Electron Beam Melting
Author(s) -
L.E. Murr,
S.M. Gaytan,
Edwin Martinez,
Frank Medina,
Ryan B. Wicker
Publication year - 2012
Publication title -
international journal of biomaterials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.576
H-Index - 28
eISSN - 1687-8795
pISSN - 1687-8787
DOI - 10.1155/2012/245727
Subject(s) - stress shielding , materials science , stiffness , alloy , fabrication , selective laser melting , microstructure , 3d printing , cathode ray , porosity , titanium alloy , composite material , shielding effect , implant , electromagnetic shielding , electron , surgery , medicine , alternative medicine , physics , pathology , quantum mechanics
This paper presents some examples of knee and hip implant components containing porous structures and fabricated in monolithic forms utilizing electron beam melting (EBM). In addition, utilizing stiffness or relative stiffness versus relative density design plots for open-cellular structures (mesh and foam components) of Ti-6Al-4V and Co-29Cr-6Mo alloy fabricated by EBM, it is demonstrated that stiffness-compatible implants can be fabricated for optimal stress shielding for bone regimes as well as bone cell ingrowth. Implications for the fabrication of patient-specific, monolithic, multifunctional orthopaedic implants using EBM are described along with microstructures and mechanical properties characteristic of both Ti-6Al-4V and Co-29Cr-6Mo alloy prototypes, including both solid and open-cellular prototypes manufactured by additive manufacturing (AM) using EBM.
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