Abstract
Migration evaluation in thin samples by PIXE of some metallic elements displaced from prosthesis. The metallic prosthesis used in orthopaedic surgery undergo degradations some years after their implantation. This phenomenon induces metallic element transfers in surrounding tissues. From an anatomical body, we have taken out implanted hip prosthesis and the surrounding tissues; we have determined the composition of the implanted prosthesis by spark spectrometry. Using a protocol adapted for each sample, we manufacture slides parallel to the femur axis. We determine the concentration of the displaced metallic elements versus depth. We have used the so-called PIXE method (Particle Induced X-rays Emission), based on the X-rays spectroscopy, to analyse our samples. The inducing particles were 3 MeV proton, the beam was 50 μm in diameter and had an intensity of 3 nA. Preliminary results show the migration of metallic elements from prosthesis to soft tissues.
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