Biomechanics is a field that combines the disciplines of biology and engineering mechanics and utilizes the tools of physics, mathematics, and engineering to quantitatively describe the properties of biological materials. Finite element modeling has been widely used to describe the mechanical behavior of the long bones which have been created from CT (Computer Tomography) images In this study a three dimensional model of the human femur bone has been developed and the data associated with the

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... p contact forces for normal walking and standing up during one cycle has been employed on the femur bone in order to investigate behavior of the femur bone during these activities. The finite element results (stresses) are obtained and compared with previous studies . The behavior of the stresses that obtained in the present study is similar to those found in the literature . The results of the analysis are helpful for the orthopedic surgeon to understand the biomechanical behavior of the femur bone and also important for surgeon in femur surgeries and bone prosthesis.