Author: Himabindu Bodduna
Publisher:
Published: 2009
Total Pages: 152
ISBN-13:
DOWNLOAD EBOOK →The objective of this study was to develop a dynamic three-dimensional subject specific computational knee model by using finite element method and validate the finite element model using a validated multi-body model developed in MSC - ADAMS. The geometric input data required to create subject specific model was obtained from Magnetic Resonance Imaging of the specimen knee. The kinematic input data was obtained from simulation of the knee in a dynamic knee simulator. The three dimensional knee model was created using MR images of specimen knee. Hexahedral element meshing was performed for the construction of finite element model and ABAQUS is used for analysis purpose. Various studies were performed to identify the effects of the ABAQUS input parameters on the accuracy of the results. The finite element (FE) model was then simulated for the kinematic input obtained from a ten second squat cycle and output values for reaction force in the fixed part were recorded. The validation of FR model was conducted by comparing the results with the validated ADAMS model. Finally future improvements are suggested.
Author: Zahra Trad
Publisher: Springer
Published: 2018-02-13
Total Pages: 94
ISBN-13: 3319741586
DOWNLOAD EBOOK →In recent years, numerous scientific investigations have studied the anatomical, biomechanical and functional role of structures involved in the human knee joint. The Finite Element Method (FEM) has been seen as an interesting tool to study and simulate biosystems. It has been extensively used to analyse the knee joint and various types of knee diseases and rehabilitation procedures such as the High Tibial Osteotomy (HTO). This work presents a review on FEM analysis of the human knee joint and HTO knee surgery, and discusses how adequate this computational tool is for this type of biomedical applications. Hence, various studies addressing the knee joint based on Finite Element Analysis (FEA) are reviewed, and an overview of clinical and biomechanical studies on the optimization of the correction angle of the postoperative knee surgery is provided.
Author: Mousa Kazemi
Publisher:
Published: 2018
Total Pages: 201
ISBN-13:
DOWNLOAD EBOOK →This work presents a foundation to combine computational musculoskeletal modelling and finite element modelling to investigate joint biomechanics with application to knee osteoarthritis. A novel framework to rapidly generate a finite element model of the knee is developed that comprises subject-specific anatomy, combining data from medical images and motion capture. This work demonstrates the robustness and feasibility of the workflow to predict the three-dimensional kinematics of the joint from the resulting anatomical model, thus addressing the form-function relationship inherent in joint mechanics. Knee joint mechanics are influenced by the geometry of the knee, and in particular the articulating surfaces of the tibial, patellar, and femoral cartilage. The workflow developed in Chapter 3 reconstructs major lower limb bone segments (pelvis, femur, tibia, fibula, and patella), knee cartilage volumes and major ligamentous constraints of the knee, using only sparse motion capture markers and a 12cm field of view MRI scan of the knee. The workflow reconstructed the subject-specific knee finite element model within 25 minutes, which is considered an acceptable time frame for clinical use. The accuracy of this new method is comparable to that achieved by a more traditional approach of generating meshes directly from segmented MR images. Chapter 4 explains principal component analysis and partial least squares regression techniques used to generate statistical shape models of the knee joint. The subject-specific 3D knee models were reconstructed from easily measured anthropometric and demographic measurements. In Chapter 5, a robust tool to reproduce the knee joint geometry from sparse weight-bearing MR imaging data was developed and used to estimate the tibiofemoral and patellofemoral kinematics. The results suggested that the knee joint kinematics may differ for men and women. The tool also exhibited variation of the contact areas as patellar and tibial cartilage mesh material points. In Chapter 6, PLSR knee models were developed, demonstrating the ability to characterise complex morphologic and kinematics interactions and present them in a manner that provides comprehensive clinical insights and applications. The PLSR model closely produced weight-bearing TF and PF alignments that were previously estimated and reported in Chapter 5. This integrated model could be used for rapid examination of the knee joint kinematics in a clinical motion analysis system. Future work will combine the FE knee modelling results with a rigid body model of the musculoskeletal system using open source modelling software (OpenSim, SimTK.org).
Author: Kozaburo Hayashi
Publisher: Springer Science & Business Media
Published: 2012-12-06
Total Pages: 278
ISBN-13: 4431669515
DOWNLOAD EBOOK →The combination of readily available computing power and progress in numerical techniques has made nonlinear systems - the kind that only a few years ago were ignored as too complex - open to analysis for the first time. Now realistic models of living systems incorporating the nonlinear variation and anisotropic nature of physical properties can be solved numerically on modern computers to give realistically usable results. This has opened up new and exciting possibilities for the fusing of ideas from physiology and engineering in the burgeoning new field that is biomechanics. Computational Biomechanics presents pioneering work focusing on the areas of orthopedic and circulatory mechanics, using experimental results to confirm or improve the relevant mathematical models and parameters. Together with two companion volumes, Biomechanics: Functional Adaptation and Remodeling and the Data Book on Mechanical Properties of Living Cells, Tissues, and Organs, this monograph will prove invaluable to those working in fields ranging from medical science and clinical medicine to biomedical engineering and applied mechanics.
Author: Ming Zhang
Publisher: CRC Press
Published: 2014-09-11
Total Pages: 360
ISBN-13: 1466588047
DOWNLOAD EBOOK →Computational biomechanics is an emerging research field that seeks to understand the complex biomechanical behaviors of normal and pathological human joints to come up with new methods of orthopedic treatment and rehabilitation.Computational Biomechanics of the Musculoskeletal System collects the latest research and cutting-edge techniques used in