Trieb K, et al. - With the aid of an industrial X-ray microcomputed tomography (XCT) system at a voxel size of 100μm, authors investigated 8 tibial and 8 femoral implants and also established a non-destructive testing protocol for ceramic knee implants optimizing scanning parameters and sample orientation using CT simulations. Also, for beam hardening correction, they used an Iterative Artefact Reduction procedure. No inclusions, cracks or pores were found by any beam hardening corrected XCT data sets for femoral and tibial implants, as evidenced by visual inspections. An essential addition of XCT test should be made to the fatigue testing as it is the only non-destroying testing method so far.