TY  - JOUR
AB  - Purpose Three-dimensional (3D) printing is increasingly used to produce orthopaedic components for hip arthroplasty, such as acetabular cups, which show complex lattice porous structures and shapes. However, limitations on the quality of the final implants are present; thus, investigations are needed to ensure adequate quality and patients safety. X-ray microcomputed tomography (micro-CT) has been recognised to be the most suitable method to evaluate the complexity of 3D-printed parts. The purpose of this study was to assess the reliability of a micro-CT analysis method comparing it with reference systems, such as coordinate measuring machine and electron microscopy.Design/methodology/approach 3D-printed acetabular components for hip arthroplasty (n = 2) were investigated. Dimensions related to the dense and porous regions of the samples were measured. The micro-CT scanning parameters (voltage – kV, current – µA) were optimised selecting six combinations of beam voltage and current.Findings Micro-CT showed good correlation and agreement with both coordinate measuring machine and scanning electron microscopy when optimal scanning parameters were selected (130 kV – 100 µA to 180 kV – 80 µA). Mean discrepancies of 50 µm (± 300) and 20 µm (± 60) were found between the techniques for dense and porous dimensions. Investigation method such as micro-CT imaging may help to better understand the impact of 3D printing manufacturing technology on the properties of orthopaedic implants.Originality/value The optimisation of the scanning parameters and the validation of this method with reference techniques may guide further analysis of similar orthopaedic components.
VL  - 26
IS  - 3
SN  - 1355-2546
DO  - 10.1108/RPJ-06-2019-0175
UR  - https://doi.org/10.1108/RPJ-06-2019-0175
AU  - Dall’Ava Lorenzo
AU  - Hothi Harry
AU  - Henckel Johann
AU  - Di Laura Anna
AU  - Bergiers Sean
AU  - Shearing Paul
AU  - Hart Alister
PY  - 2020
Y1  - 2020/01/01
TI  - Dimensional analysis of 3D-printed acetabular cups for hip arthroplasty using X-ray microcomputed tomography
T2  - Rapid Prototyping Journal
PB  - Emerald Publishing Limited
SP  - 567
EP  - 576
Y2  - 2024/04/25
ER  -