Revealing Inflammatory Indications Induced by Titanium Alloy Wear Debris in Periprosthetic Tissue by Label-Free Correlative High-Resolution Ion, Electron and Optical Microspectroscopy

Rok Podlipec, Esther Punzón-Quijorna, Luka Pirker, Mitja Kelemen, Primož Vavpetič, Rajko Kavalar, Gregor Hlawacek, Janez Štrancar, Primož Pelicon, Samo K. Fokter
Materials, June 2021; doi: 10.3390/ma14113048 (read more here).

In brief

In our study, new insights of titanium alloy debris-tissue interaction were revealed by the implementation of label-free high-resolution correlative microscopy approaches: hybrid optical fluorescence and reflectance micro-spectroscopy, scanning electron microscopy (SEM), Energy-dispersive X-ray Spectroscopy (EDS), helium ion microscopy (HIM) and micro-particle-induced X-ray emission (micro-PIXE). Micron-sized wear debris were found as the main cause of the tissue oxidative stress exhibited through lipopigments accumulation in the nearby lysosome. This may explain the indications of chronic inflammation from prior histologic examination.

correlative microscopy