The assessment of the applicability of micro-nanostructured thin films intended for biomedical applications and finding a layer of biocompatible material with a specific thickness useful for improving the tribological properties of hip prostheses was the main objective of the experiments. Thin films of TiN, TiO2 and CrN were deposited on femoral heads of CoCr and M30NW steel, through physical processes – cathodic arc, DC sputtering and HiPIMS sputtering - being obtained layers with thicknesses of 0.5 μm, 1 μm and 1.5 μm. Following the nanoindentation and tribological characterization tests, the hardness and wear rate of the thin films were determined and the degree of influence of each deposition method or of the material used was analysed. Taking into account the values of the obtained parameters, the conclusion is that the TiN and CrN thin films deposited by DC sputtering had better wear resistance and the best tribological characteristics compared to TiO2, the first one being further tested on real biomedical components to evaluate their applicability. To study the quality of the thin films, some wear tests simulating the movement in an environment similar to the real one and a new topographical analysis of the worn films were made. Following all these studies, TiN was determined to be the most suitable material in the form of a useful thin film for recuperative biomedicine. The protection offered by the thin films against wear was proven by the fact that, at the macroscopic level, traces of material were observed on some uncoated components, and at the microscopic level, a decrease in the surface roughness of the coated femoral head, in comparison to the uncoated femoral heads. From the experimental data obtained, a main conclusion was drawn, regarding the thin films thickness with the highest degree of applicability and wear resistance for biomedical applications. [ABSTRACT FROM AUTHOR]