Author(s)

Kai Wu , Jianxiong Ma , Yuren Du

Corresponding Author

Kai Wu

Abstract

Based on the structural characteristics of femur fractures at different stages and the CT data of human femur, a medical assembly model was established in this paper. A locking pressurized bone plate was adopted for the fixation of middle femur fractures. Finite element analysis was used to analyze the stress distribution of the locked compression plate and femur at different healing stages under 70kg physiological load and constraint conditions. The results showed that soft tissue formation and fracture healing did not occur, the stress distribution of the locking compression plate was similar to that of the femur, and the maximum stress value in the femur was higher than that of the natural femur, and the femur above the fracture was the main stress distribution area. In callus formation stage, the maximum stress of femur is lower than the ultimate strength of normal bone, and some stress is transferred downward. With proper rehabilitation training, new bone growth can be promoted.

Keywords

Finite Element Analysis; Fracture Healing; Biomechanics