The main objective of this research work is to solve the orthopaedic problem of Cortical Bone fracture through the computer simulation based on the FEM. <...> The computer simulation based on FEM is used everywhere in industries. <...> Finite Element Analysis (FEA) or Finite Element Method (FEM) is an approximation mathematical technique used for the complex object and geometries. <...> The human body is subjected to the machine-induced vibrations several times a day. <...> The main objective of the cortical bone analysis is to identify natural frequencies and natural vibration modes of the bone. <...> To deal with these complexities FEA is an excellent mathematical tool. <...> Cortical bone design is a complex procedure. <...> Design of Cortical bone was done using Solid Edge software and the model is imported in ANSYS 14.0 (FEM based software) for vibration analysis. <...> The analysis shows that the natural frequency of vibration varies from 717 Hz to 6918 Hz. Keywords: cortical bone, modal frequency, ANSYS, vibration mode. <...> I. INTRODUCTION In human body bone is classified into two types known as cortical bone and cancellous bone. <...> Cortical bone is found in the shaft of long bones like femur bone and forms the outer shell around cancellous bone at the end of joints. <...> Cancellous bone is much porous with porosity ranging between 50% to 90%. <...> The mathematical modeling and analysis of this problem will result into knowledge about the natural frequency and mode shape of the cortical bone and vibrations effect on the human body especially on cortical bone. <...> The Daily vibrations could result in orthopaedic problems like femur bone fracture, cortical bone problems etc. <...> To study orthopaedic problems due to effect of vibration modal analysis can be used. <...> The designing of cortical bone is done using Solid Edge Software [10] and imported to ANSYS 14.0 [11] for Modal Analysis. <...> FINITE ELEMENT ANALYSIS (FEA) ANSYS 14.0 is FEA based software used for the structural, modal and thermal analysis of different objects and geometries. <...> Before Finite Element Analysis, Lumped parameter study method was used to solve the orthopaedic problem. <...> Lumped parameter method requires large calculation so it was time taking process <...>