Abstract
The mechanics of shoulder bones under implant loading is important to the success of shoulder replacement surgery. This work presents the results of a noninvasive three-dimensional (3D) full-field mechanical measurement of implanted shoulder bones under various physiologically realistic loading conditions. A glenoid implant was cemented in a human cadaveric specimen by a shoulder surgeon and loaded in a mechanical tester coupled with micro X-ray computed tomography (micro-CT). The micro-CT images of the specimen was taken under no-load, eccentric loading, and concentric loading conditions, respectively. Using image processing technique and digital volume correlation, the 3D displacement field inside the shoulder bone were calculated. The results were displayed using 3D visualization tools. The clinical implications of the results are discussed for the improvement of total shoulder replacement.
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Acknowledgements
The project described was supported by the National Center for Advancing Translational Sciences, National Institutes of Health, through Grant UL1TR002014. The content is solely the responsibility of the authors and does not necessarily represent the official views of the NIH. The support was made available through Penn State Clinical and Translational Science Institute (CTSI). The authors are grateful to Dr. Timothy Ryan and Mr. Timothy Stecko at the Center for Quantitative Imaging (CQI) at Penn State University for technical support on micro-CT scans. Appreciation is also extended to Mr. Richard Prevost at LaVision for useful technical discussions.
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© 2018 The Minerals, Metals & Materials Society
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Zhou, Y., Hernandez Lamberty, M.A., Lewis, G.S., Armstrong, A.D., Du, J. (2018). 3D Full-Field Mechanical Measurement of a Shoulder Bone Under Implant Loading. In: & Materials Society, T. (eds) TMS 2018 147th Annual Meeting & Exhibition Supplemental Proceedings. TMS 2018. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-319-72526-0_26
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DOI: https://doi.org/10.1007/978-3-319-72526-0_26
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