To study and compare the physical structure of the tibial pad tray design prosthesis and the difference between the stress transmission effect and the stress distribution of the trabecular. And further exploring the influence of the structure design on the performance of the metal implant by designing prosthesis after implantation in the patient's tibia, and establishing a finite element model that simulates a human standing on one leg.

Firstly, 3-matic11.0 processing software was used to optimize the trabecular structure of the artificial knee joint tibial pad solid tray. The tibial tray prosthesis and tibial model of the two structural designs were subjected to finite element analysis in Hypermesh 14.0 software. Pre-processing, and finally use the finite element software Abaqus 6.13 to carry out surgical implant simulation analysis and output the maximum stress and stress distribution on the tibia tray and tibia.

The maximum stress was 13.72 MPa when the tibial tray was designed as a solid structure. However, when the implanted tibial tray was designed for trabecular bone structure, the tibial stress distribution range increased in the proximal tibial component and the maximum stress value (18.38mpa) increased by about 34%.

The tibial pad tray designed with bone trabecular structure can effectively reduce the stress shielding level of the artificial knee joint, thus avoiding the early loosening of the prosthesis caused by the stress shielding phenomenon and improving the service life of the prosthesis.