Abstract
Background:The femur bone is an essential part of human activity, providing stability and support in carrying out our day to day activities. The inter-human anatomical variation and load bearing ability of humans of different heights will provide the necessary understanding of their functional ability.Objective:In this study, femur bone of two humans of different lengths (tall femur and short femur) were subjected to static structural loading conditions to evaluate their load-bearing abilities using Finite Element Analysis.Methods:The 3D models of femur bones were developed using MIMICS from the CT scans which were then subjected to static structural analysis by varying the load from 1000N to 8000N. The von Mises stress and deformation were captured to compare the performance of each of the femur bones.Results:The tall femur resulted in reduced Von-Mises stress and total deformation when compared to the short femur. However, the maximum principle stresses showed an increase with an increase in the bone length. In both the femurs, the maximum stresses were observed in the medullary region.Conclusion:When the applied load exceeds 10 times the body weight of the person, the tall femur model exceeded 134 MPa stress value. The short femur model failed at 9 times the body weight, indicating that the tall femur had higher load-bearing abilities.
Highlights
Bones are the vital organs in the human body, which give stability and strength
The tall femur resulted in reduced Von-Mises stress and total deformation when compared to the short femur
The short femur model failed at 9 times the body weight, indicating that the tall femur had higher load-bearing abilities
Summary
Bones are the vital organs in the human body, which give stability and strength. Human body consists of 270 bones1874-1207/18 2018 Bentham OpenPatient-Specific Static Structural AnalysisThe Open Biomedical Engineering Journal, 2018, Volume 12 109 at birth and reduces to 206 bones in case of adults [1]. Hip joint being the second largest weight-bearing joint after knee, is one of the key joints which transmits the loads to lower abdomen during walking, standing, running, and/or stumbling [2]. This ball and socket type joint is supported by many well-balanced muscles [3]. Hip joint consists of a femoral head, femur and lateral condyle. Many studies have been carried out using Finite element methods to evaluate human activities [9 - 11].In the present study, a three-dimension patient-specific model of femur of different heights was analysed and evaluated for various forces acting on the hip joint. The inter-human anatomical variation and load bearing ability of humans of different heights will provide the necessary understanding of their functional ability
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