AUThOR(s): Silva Jr., W.C., Silva, M.P., Costa, R.H., Souza, C.M.P.

ABSTRACT: Titanium has been widely used in the area of ​​biomaterials, the segment of manufacture of products for rehabilitation goes through a constant evolution, because each year new techniques appear, new technologies that help in the development of biomaterials, these evolutions are mostly aimed at cost reduction, osseointegration, biocompatibility among other factors. The objective of this article is to carry out the analysis of the fixation screws of the femur prosthesis and hip prostheses, manufactured in titanium alloy ASTM 136. The use of titanium alloys in orthopedic, dental and aeronautical applications has increased in recent decades. The use of titanium in biomaterials is due to its singularities in the physiological environment and its favorable chemical and mechanical properties such as good resistance to corrosion, high degree of biocompatibility and low modulus of elasticity. For the fixation screws, analyzes of their resistance to torsion and the fracture surfaces of the tested samples were performed, for the analyzes were used Scanning Electron Microscopy (SEM) and semi-quantitative analysis of the chemical elements by X-ray spectroscopy by dispersion in (EDS) and for the hip prosthesis, the fatigue test will be carried out according to ABNT NBR 7206-6. These tests aim to verify if both are able to be sold on the national market. With the tests completed, the results were compared with the standards in force. The results of the torsion tests are presented, where all samples met the quality requirements and the hip prostheses showed a stable behavior during the 10.000.000 million cycles, without failures during or after the tests.