Structural and mechanical evaluations of a topology optimized titanium interbody fusion cage fabricated by selective laser melting process
dc.contributor.author | Lin, Chia-Ying | en_US |
dc.contributor.author | Wirtz, Tobias | en_US |
dc.contributor.author | LaMarca, Frank | en_US |
dc.contributor.author | Hollister, Scott J. | en_US |
dc.date.accessioned | 2007-12-04T18:37:01Z | |
dc.date.available | 2008-11-05T15:05:43Z | en_US |
dc.date.issued | 2007-11 | en_US |
dc.identifier.citation | Lin, Chia-Ying; Wirtz, Tobias; LaMarca, Frank; Hollister, Scott J. (2007). "Structural and mechanical evaluations of a topology optimized titanium interbody fusion cage fabricated by selective laser melting process." Journal of Biomedical Materials Research Part A 83A(2): 272-279. <http://hdl.handle.net/2027.42/57400> | en_US |
dc.identifier.issn | 1549-3296 | en_US |
dc.identifier.issn | 1552-4965 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/57400 | |
dc.description.abstract | A topology optimized lumbar interbody fusion cage was made of Ti-Al6-V4 alloy by the rapid prototyping process of selective laser melting (SLM) to reproduce designed microstructure features. Radiographic characterizations and the mechanical properties were investigated to determine how the structural characteristics of the fabricated cage were reproduced from design characteristics using micro-computed tomography scanning. The mechanical modulus of the designed cage was also measured to compare with tantalum, a widely used porous metal. The designed microstructures can be clearly seen in the micrographs of the micro-CT and scanning electron microscopy examinations, showing the SLM process can reproduce intricate microscopic features from the original designs. No imaging artifacts from micro-CT were found. The average compressive modulus of the tested caged was 2.97 ± 0.90 GPa, which is comparable with the reported porous tantalum modulus of 3 GPa and falls between that of cortical bone (15 GPa) and trabecular bone (0.1–0.5 GPa). The new porous Ti-6Al-4V optimal-structure cage fabricated by SLM process gave consistent mechanical properties without artifactual distortion in the imaging modalities and thus it can be a promising alternative as a porous implant for spine fusion. © 2007 Wiley Periodicals, Inc. J Biomed Mater Res 2007 | en_US |
dc.format.extent | 396172 bytes | |
dc.format.extent | 3118 bytes | |
dc.format.mimetype | application/pdf | |
dc.format.mimetype | text/plain | |
dc.publisher | Wiley Subscription Services, Inc., A Wiley Company | en_US |
dc.subject.other | Chemistry | en_US |
dc.subject.other | Polymer and Materials Science | en_US |
dc.title | Structural and mechanical evaluations of a topology optimized titanium interbody fusion cage fabricated by selective laser melting process | en_US |
dc.type | Article | en_US |
dc.rights.robots | IndexNoFollow | en_US |
dc.subject.hlbsecondlevel | Biomedical Engineering | en_US |
dc.subject.hlbtoplevel | Engineering | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Spine Research Laboratory, Department of Neurosurgery, The University of Michigan, Ann Arbor, Michigan ; Scaffold Tissue Engineering Group, The University of Michigan, Ann Arbor, Michigan ; Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan ; Spine Research Laboratory, Department of Neurosurgery, The University of Michigan, Ann Arbor, Michigan | en_US |
dc.contributor.affiliationum | Spine Research Laboratory, Department of Neurosurgery, The University of Michigan, Ann Arbor, Michigan | en_US |
dc.contributor.affiliationum | Scaffold Tissue Engineering Group, The University of Michigan, Ann Arbor, Michigan ; Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan ; Department of Mechanical Engineering, University of Michigan, Ann Arbor, Michigan ; Department of Surgery, University of Michigan, Ann Arbor, Michigan | en_US |
dc.contributor.affiliationother | Fraunhofer Institute of Laser Technology, Aachen, Germany | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/57400/1/31231_ftp.pdf | en_US |
dc.identifier.doi | http://dx.doi.org/10.1002/jbm.a.31231 | en_US |
dc.identifier.source | Journal of Biomedical Materials Research Part A | en_US |
dc.owningcollname | Interdisciplinary and Peer-Reviewed |
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