| Abstrakt: |
This study looked at a patient's gait when walking after above-knee amputation with osseointegration, examined a femoral bone model with an osseointegration implant using Ansys Workbench 17.2, and thoroughly evaluated the mechanical and fatigue properties of a Ti13Nb13Zr alloy implant. The findings of the tensile testing showed an ultimate tensile strength of 553 MPa, average yield strength of 480 MPa, an elongation of 19.66%, and a Young's modulus of 2.73 GPa. Furthermore, a compressive strength of 1010 MPa and compression yield strength of 700 MPa were found by compression testing. The results of fatigue testing, which were displayed as S-N curves, highlighted the alloy's time-dependent fatigue behavior by showing decreasing fatigue strength with an increase in cycles. Force plate data obtained throughout the gait cycle provided insights into the moments and ground response pressures on the implant's abutment, helping to assess implant loading patterns. A maximum force of 600 N was reported. The optimal performance seems to occur when L = 120 mm and D = 3 mm occur. In this case, the results show low stress levels (41.66 MPa), a high safety factor (6.01), and the least amount of total deformation (2.57 mm). If these values meet the design or usage requirements, this scenario might be considered good. Finally, the comprehensive results confirm the mechanical feasibility of the Ti13Nb13Zr alloy for prosthetic applications and offer important new information for improving prosthetic design, guaranteeing durability, and improving safety in practical applications. [ABSTRACT FROM AUTHOR] |
