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Computed tomography metrological examination of additive manufactured acetabular hip prosthesis cups
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Kourra, Nadia, Warnett, Jason M., Attridge, Alex, Dibling, Greg, McLoughlin, James, Muirhead-Allwood, Sarah, King, Richard and Williams, M. A. (2018) Computed tomography metrological examination of additive manufactured acetabular hip prosthesis cups. Additive Manufacturing, 22 . pp. 146-152. doi:10.1016/j.addma.2018.04.033 ISSN 2214-8604 .
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WRAP-computed-tomography-metrological-examination-additive-manufactured-acetabular-hip-prosthesis-cups-Kourra-2018.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution Non-commercial No Derivatives 4.0. Download (3260Kb) | Preview |
Official URL: https://doi.org/10.1016/j.addma.2018.04.033
Abstract
Additive manufacturing (AM) is uniquely suitable for healthcare applications due to its design flexibility and cost effectiveness for creating complex geometries. Successful arthroplasty requires integration of the prosthetic implant with the bone to replace the damaged joint. Bone-mimetic biomaterials are utilised due to their mechanical properties and porous structure that allows bone ingrowth and implant fixation. The predictability of predetermined interconnected porous structures produced by AM ensures the required shape, size and properties that are suitable for tissue ingrowth and prevention of the implant loosening. The quality of the manufacturing process needs to be established before the utilisation of the parts in healthcare. This paper demonstrates a novel examination method of acetabular hip prosthesis cups based on X-ray computed tomography (CT) and image processing. The method was developed based on an innovative hip prosthesis acetabular cup prototype with a prescribed non-uniform lattice structure forming struts over the surface, with the interconnected porosity encouraging bone adhesion. This non-destructive, non-contact examination method can provide information of the interconnectivity of the porous structure, the standard deviation of the size of the pores and struts, the local thickness of the lattice structure in its size and spatial distribution. In particular, this leads to easier identification of weak regions that could inhibit a successful bond with the bone.
| Item Type: | Journal Article | ||||||||
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| Subjects: | R Medicine > RD Surgery T Technology > TS Manufactures |
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| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||||||
| Library of Congress Subject Headings (LCSH): | Biomedical materials -- Industrial applications, Artificial hip joints, Tomography, Bones -- Growth, Nondestructive testing | ||||||||
| Journal or Publication Title: | Additive Manufacturing | ||||||||
| Publisher: | Elsevier | ||||||||
| ISSN: | 2214-8604 | ||||||||
| Official Date: | August 2018 | ||||||||
| Dates: |
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| Volume: | 22 | ||||||||
| Page Range: | pp. 146-152 | ||||||||
| DOI: | 10.1016/j.addma.2018.04.033 | ||||||||
| Status: | Peer Reviewed | ||||||||
| Publication Status: | Published | ||||||||
| Access rights to Published version: | Open Access (Creative Commons) | ||||||||
| Date of first compliant deposit: | 22 June 2018 | ||||||||
| Date of first compliant Open Access: | 22 June 2018 | ||||||||
| RIOXX Funder/Project Grant: |
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